In order to ensure the traceability of the instruments for automotive testing laboratory, the article describes the necessity and significance of in-house calibration in automotive testing laboratory, according to the CNAS- CL31 " Requirements for In-house Calibration " proposed five important aspects...

According to the requirements of the forest soil respiration experiment, the multichannel measurement system in the forest soil respiration is researched and designed. The system selects the Programmable Logic Controller (PLC) as the core controller, changes the measurement channel by switching the measurement...

Simulation technology is extremely important in the design process of control algorithm for missile weapon system. Different from digital simulation and traditional hardware-in-the-loop simulation, a rapid prototyping hardware-in-the-loop simulation technology is proposed which can confirm the control...

The tea physical properties and quality are often influenced by the rolling pressure in the tea production. In this paper, the tea rolling modeling in the barrel rolling machine is established by analyzing the force situation of the tea leaves in the barrel rolling machine. The joint rolling curve synthesis...

The vibration analysis model of slab mill is established in this paper according with the multi-body dynamics theory. The relationship between the vibration displacement and time of the support roller in different conditions is obtained through simulation analysis. Under different damping conditions,...

Researched on a monitoring system for one type of power drive device. Designed a mathematic model for monitoring and evaluating the status of power drive device based on data fusion theory, and developed the related software. Developed a database to manage the measured status data, and then developed...

for electronic seal of smart meter with special appearance and light weight ,a batch testing equipmentis designed to write program into seal and test automatically , which will increase the testing efficiency of electronic seam installed in meter. The arrange part being consist of vibrating plate , sliding...

In order to do real-time monitoring disaster prediction and life detection of flammable and explosive, high risk and highly pressure goods in the factory etc. Combination wireless sensor network node with temperature, humidity ,combustible gas concentration sensor ,using four rotor aircraft as a carrier...

In this paper, the vehicle engine block processing characteristics was analyzed based on body machining process path problem, process route optimization mathematical model was established, the principle of the basic genetic algorithm and genetic operation were analyzed also, a kind of improved genetic...

The process of Pichia pastoris fermentation has a long period and less offline data . The cell concentration and some other important variables can not be measured on line. The soft sensor modeling at present is mainly the artificial neural network (ANN).This paper introduces the Support Vector Machine...

Based on benefits evaluation, a location model of CMS is provided in the paper. According to the character of the highway network, some parameters are simplified to calculate traffic flow and attenuation coefficient in the model. The results verify the rationality and practicality of the method.

With the rapid development of Internet, the network traffic explosively grows with the emergence of new network business. The existing electric power communication networks still have the traditional architecture that is the closed system highly integrated with devices and software, which cannot satisfy...

The accurate and available engine rotate speed signal is quite essential to engine control, fault diagnosis, etc. This paper analyses the parameters optimization towards common processing methods of engine rotate speed, aiming at internal combustion engine closed-loop control. Basing on the Matlab/xPC...

Considering that it’s difficult to build target motion model in structure stochastic jump system, this paper studies system errors estimation. Based on the Maximum Likelihood (ML) estimation, a conclusion is drawn, that is, there exists a causal conjunction between system errors and state estimation....

Boosting is an effective classifier combination method, which can improve classification performance of an unstable learning algorithm due to its theoretical performance guarantees and strong experimental results. However, the algorithm has been used mainly in batch mode, i.e., it requires the entire...

Boosting is an effective classifier combination method, which can improve classification performance of an unstable learning algorithm due to its theoretical performance guarantees and strong experimental results. However, the algorithm has been used mainly in batch mode, i.e., it requires the entire...

The distribution network may be influenced by access of a large number of distributed generations, such as the impact of short level, reactive power, voltage ride through limitation, bi-directional power flow, etc., which brought a lot of uncertainty for networks’ operation and controlling. The future...

This article introduces the placing signage and the high-voltage trigger system of the extracorporeal cardiac shock wave treatment instrument. The placing signage is composed of a solenoid coil, a cylindrical sheet metal and a parabolic reflection cup. The cylindrical sheet metal is pushed sharply by...

With the significantly increased exploitation speed of offshore marine resources, marine environmental pollution is getting more and more attention in recent years. Offshore environmental monitoring has become a hot issue in marine ecological environmental research. Wireless sensor networks (WSNs) technology...

CCD (charge coupled device) is one of the mainstream of image sensors, it plays a more and more important role in the real-time image processing and recognition. For airborne CCD image recognition problem, this paper proposes an enhanced method of wavelet transform. It can real-time processing of airborne...

The objection of this article is to optimize auto-cascade refrigeration system. This refrigeration system use multiple mixture (R22/R23/R14) as the refrigerant, which is driven by the single-stage compressor. Throttle is an important composition of auto-cascade refrigerant system, which impact on evaporation...

The emergence of miniature robot makes micro vision sensing system become a hot topic in the field of scientific research. The main task of miniature visual sensor system is image acquisition and wireless transmission, but image transmission occupied the main part of the energy consumption. In order...

According to the shortcoming of present helicopter wind tunnel test by manual operation , an automatic control technology based on network communication was developed for the helicopter winder tunnel experiment. It includes the test standard process and different pipelines between command communication...

The objective evaluation of teachers’ teaching quality can stimulate teachers’ teaching enthusiasm and improve teaching quality. In this paper we apply an algorithm based on Boolean matrix in rough set for data analysis on the evaluation of teachers’ teaching quality, optimize the evaluation index and...

Considering the nonlinearity and uncertainty of first tunnel hoop stress changes that caused by the construction of underwent tunnel in Suzhou metro line 4. According to the basic principles of fractal theory, Hurst index of the hoop stress time series was calculated by using R/S and V/S analysis method....

orsion system is a typical pulse impulse measuring method. Currently used analysis model is the impulse moment interaction model. According to the response characteristic analysis of torsion system under pulsed impulse action, using analytical methods, this thesis proposes error analysis methods for...

Stereo vision is a non-contact method to realize 3D reconstruction of free-form surface, and has a wide range of applications in the field of reverse engineering and virtual reality. The technology of camera calibration has always been the research hotspot and difficulty. In this paper, firstly the experimental...

With the development of economy and the improvement of personal consumption, the demands of people for consumer goods are becoming more diversified and individualized. In recent years, the personalized shoemaking system is favored by market, and the traditional shoemaking industry needs new technologies...

Parametric analysis and of system design is the basic issue of torsion thrust measurement system. Based on parametric analysis of thruster size, weight and maximum thrust, as well as torsion damping ratio, vibration frequency and the torsional stiffness coefficient, the thesis proposes a method for parametric...

This paper summarizes three kinds of improved strategies for ant colony optimization algorithm: the improved strategy based on the structure of solution, the improved strategy based on the pheromone updating, and the improved method based on the solution processing. Taking the ant colony system as an...

In this paper, we present a path planning for mobile robot based on improved ant colony optimization algorithm. In order to increasing the algorithm’s convergence speed and avoiding to fall into local optimum, we proposed updating the pheromone residues. Experiments show that this method is effective...

This paper introduces a new smart home system with low-power, scalability and highly security. The system takes the relatively high performance STM32 chip as the core of data processing, and integrates high-precision resistive touch screen, ZigBee wireless sensor control network, GPRS remote data transmission...

This paper proposes a novel direct and completely nonlinear alignment method for the strapdown inertial navigation system (SINS). The method uses the sparse-grid quadrature Kalman filter based on the Kronrod–Patterson rule (SG-KP-QKF) and nonlinear models. The system equations and the measurement equations...

Compressive sensing is a novel information theory proposed recently.It broke through the restrictions of the traditional Nyquist sampling theorem on the sampling frequency,which can only use fewer sampling signals to describe the original signals.This article introduces an image fusion algorithm based...

A nondestructive and accurate measurement method and related apparatus based on the split-cylinder resonator techniques is descried in this paper. The dielectric constants and loss tangents of the flat substrate materials are suitable to be characterized and then calculated by software programmed according...

Photometric accuracy and precision are the most important technical parameters of spectrophotometers. In this paper, our three instruments, that is Datacolor SF600, X-Rite Color i7 and Varian Cary 5000 UV-VIS-NIR spectrophotometer, were inspected on their photometric precision for color measuring. Five...

Auto-cascade refrigeration system using multiple non-azeotropic refrigerants, taking advantage of the difference between the evaporation temperature of high and low boiling point components, applying the single-stage compression, by the way of internal cascade to obtain a larger working temperature range,...

The Field Programmable Gate Array(FPGA) can be used to generate PWM waves to control DC motor’s working, therefore a system of automobile’s automatic wipers which could convert wipers’ speed autonomously were designed base on it in this paper. The core module of the system was FPGA which generated PWM...

An algorithm based on SIFT feature detection method(Scale Invariant and Feature Transform) and using conversion step of the circular area selection feature points described are introduced into image feature detecting and matching for better real time performance and higher precision.Improved SIFT features...

Hepatocarcinoma, a malignant cancer, threaten human life badly. It is a current issue to seek the effective natural remedy from plant to treat cancer due to the resistance of the advanced hepatocarcinoma to chemotherapy. Chrysin (Chr), a major symbol ingredient in Chinese Propolis, has a wide range of...

In practical process of dynamic balancing, rotating speed, mass and angular location of trial weight will affect one-time balancing effect. In order to find the best balancing speed, trial weight mass and angle, computer simulation and experimental research are conducted. The results show that, one can...

Confirming about the working point of the permanent magnet is an essential premise in the calculating of permanent magnetic circuit. In this paper, the choosing methods about the working point of the permanent magnet are analyzed overall. The calculating formulas of the optimal calculating are deduced...

There has a constant barrage of worms over the internet in recent years. In order to effectively prevent worm spreading, researchers are trying to understand the behavior of the worm propagation with the aid of epidemiological models. In this paper a worm propagation model with time delay and quarantine...

In this paper, a new nature-inspired optimization algorithm, based on the prevalent mechanism of infectious diseases, called Hybrid Infection model optimization Algorithm HIA , was designed. The HIA algorithm mimic the transmission mechanism of infectious diseases, needs neither the gradient information...

The regular sensors that are used for TPMS (Tire Pressure Monitor System) are some inaccuracies for collecting parameters. Thus, a new error correction method is proposed to calibrate tire pressure values based on linear regression technology. And based on the way a friendly interactive TPMS is achieved....

Phase-sensitive detection circuit tests signals according to the correlation of the reference signal and the input signal. The noise is eliminated by the independence between the reference signal and the noise signal. The sensitivity of the detector is improved significantly by the suppression of the...

This paper introduces a grab operation test system of a gantry crane and apply this system to compare the working performance of the new hollowed grab bucket with the traditional grab bucket. By using the data acquisition card (DAQ card), the test system collects the data of torque limiter and current...

A high resolution digital integrated chip capacitor measurement system was designed.The major components of the system mainly includedmain control chip, capacitance transducer, data storage and communication interface.ARM7-based mcro controllerSTM32F207was used as the main control chip, capacitance measurement...

In the free-floating mode, dynamic coupling exists between the manipulators and the spacecraft base of space robot, and the base attitude and position are easily disturbed by the motions of the manipulators. In this paper, firstly, the angular momentum conservation equation is analyzed. Then, the objective...

The developmental history and progress of the fluid transmission are introduced in this paper. As well as the importance of the simulation software about fluid drive is pointed out, the advantages and disadvantages of several typical fluid driving simulation software (CFD) between domestic and international...

Tunable diode laser absorption spectroscopy (TDLAS) technology has the characteristics of high sensitivity, selectivity and rapid response. The tunable and narrow linewidth of semiconductor lasers are used in this technique to realize the rapid and accurate online detection of target gas concentration,...

This paper proposes a new image quality assessment approach based on Contourlet transform and generalized gamma distribution (GGD). The image is processed by Contourlet transform at first and the Contouelet coefficients are modeled by GGD. The parameter of GGD is estimated and the feature vector is formed...

This paper proposed a new no-reference image quality assessment approach based on compressed sensing and mixture of generalized Gaussian distribution (GGD). The image is processed by compressed sensing at first, then sparse coefficients of compressed sensing are modeled by mixture of GGD. The parameter...

The existing algorithms of network topology discovery are mainly based on Internet control message protocol (ICMP) and simple network management protocol (SNMP). These algorithms are active network topology discovery methods which can inject new traffic into the Internet and affect the network performance....

Rail straightness measurement is critical in rail production, in which the detecting speed, accuracy and stability directly affect the overall rail production. In this paper, using modern technology such as laser sensors, data acquisition, and computing technology, an innovative rail straightness measurement...

The determination of driving state of non-motorized vehicle before traffic accident has very important significance for the identification of non-motorized vehicle and vehicle traffic accident. Based on a typical case of traffic accident of vehicle and non-motor vehicle, the injury degree is consistent...

The drive system of an elevator controls the starting and accelerating, smooth running and braking deceleration of the elevator. The quality of elevator’s performance is closely related to the design of the drive system. This paper carries on the modeling and simulation of elevator’s drive system by...

Affected by influence factors such as physical lighting environment or joining structures of the workpieces, etc., the positioning of workpieces by image processing may have huge deviation and are even not the location of the final target workpiece. This article realizes objective workpieces positioning...

In this paper, we introduce and study a class of generalized vector variational-like inequality problems in fuzzy environment. Under suitable conditions, we get the existence of the solution to the generalized vector variational like inequalities in fuzzy environment by using the known Fan-KKM theorem.

Radio Frequency Identification (RFID) is an advanced technology, which can be applied to automatic data identification, acquisition and distribution. When utilized in power grid logistics management, this technology will assist to improve the logistics management efficiency. However, RFID hasn’t been...

Monte Carlo method (MCM) for evaluation of measurement uncertainty is a beneficial supplement to the “Guide to the expression of uncertainty in measurement” (GUM). This paper introduces the method and the steps of measurement uncertainty evaluation by MCM based on LabVIEW, and an example is given out...

Equipment measurability is a design characteristic owned by each measuring (or testing) device of equipment that reflects its accurate value, reliable data, and the degree of convenience of measurement. Based on the concept of equipment measurability, this article puts forward the new concept of generalized...

In the design of switching power supplies of high power factor in communication devices, high-quality PCB board design is the most significant aspect in solution to electromagnetic compatibility and reliability of the entire system[1]. The article introduces the principles and methods of PCB board design...

The original image from infrared image system is low contrast and bad display. The parameters of typical linear transform arithmetic are achieved by experience. This paper proposes a new piecewise linear transform arithmetic based on histogram statistic and describes the architect of the hardware design...

This paper propose a method to study the dynamic characteristics of two-phase flow though the signals which collected from acoustic emission. With the digital processing to extract the feature of time domain and wavelet energy to analysis. the characteristic of flow. At last, get the relationship of...

The necessity of vector characterized is given by comparison of common test methods for mixer. Based on the model proposed by Agilent company, establish a simplified model of the parameter C and investigate the mixing product and jamming signal processing method. Through the analysis of phase for two-port...

In this paper, a measurement system with the near infrared spectrum technique is introduced. The experimental pipeline is designed for the stainless steel pipe which can reduce the interference of external light and have the four groups of measuring device. While the data are collected by high frequency...

Based on the fact that the weather bureau currently does not provide solar irradiance forecast data, which is a key parameter to predict energy where photovoltaic (PV) is generated, a practical and indirect solar irradiance prediction model that is based on the RBF neural network and input by several...

In dredging engineering, cutter-suction dredgers are the most widely used dredging equipment in the world. Its production directly determines the efficiency of a dredging project. Therefore, predicting the production of a cutter suction dredger is of considerable importance. This paper presents a BP...

Spoofing is an important threat to present satellite navigation equipment; and the research on spoofing technology is the basis of the anti-spoofing technology. According to the principle of spoofing, this paper analyzes constraints on timing receivers and navigation receivers. The analysis results show...

This paper we intend to test the pressure during the process of grain drying in the rectangular silo and explore the change regularity of dynamic and static pressure. According to the trend of the dynamic and static pressure with height, we analyzed the pressure and the structure stress in the silo that...

This paper proposes a method of mechanical performance prediction of cold rolled ribbed steel bars based on RBF network with whole variable space. It builds a whole variable space model and studies the performance prediction of cold rolled ribbed steel bars based on the 5-in & 1-out RBF network and the...

The technique of smooth connections between quartic Bézier curves with shape parameters and cubic H- Bézier curves is investigated. Based on a study of their basis functions, endpoint properties and shape analysis, the continuous connection conditions between quartic Bézier curves with shape parameters...

Nonlinear composite insulator voltage distribution is big, the umbrella skirt interval is small, this brought difficulty to defect inspection of composite insulator. Article is studied based on electric power within the composite insulator type defect inspection technology, the principle of uv pulse...

Due to the defects in composite insulator failure caused by more and more, it is necessary to detect defects in charged composite insulator. Composite insulator were summarized in this paper, detail defect in charged the research situation of detection technology, this paper expounds the several typical...

In the energy-saving lamp production, there may be some defects such as no lamp post, too long tail, excess or not enough powder coating. The paper proposes the defect detection algorithm based on tungsten defect features with machine vision. It contains obtaining of tungsten area, filtering, marking...

In order to lengthen floating time of foil in the air and improve its scattering abilities, this paper proposes a novel structure of millimeter wave foil. By cutting useless part of foil, its weight is reduced appropriately while its scattering properties as well as floating time are strengthened which...

As people's living standards improve, people have higher requirements on the quality of life and health of human body. Exercise is an important way to keep healthy. The amount of exercise of different degree will have different effects on the health of human body. Real-time monitoring and recording the...

This paper research on sensorless control of brushless dc motor control for electric bicycle. Based on the work requirements of electric bicycles, this paper introduces some method to improve the start of the motor and the detection of the motor’s rotor position, expand the speed range of electric bicycle...

Industrial metrology systems for inspection and quality control are the key issues to ensure the high quality and consistency of metrology. However, the traditional metrology system contents multiple subsystem which separated by different functions and is hard to organized as a work flow in practice....

The high cost of the reliability test for water-entry process of air-launched vehicle prompts the numerical simulation method which has become a mainstream in the process of equipment development. In this paper, the author integrated the simulation results of vehicle failure mechanism with the calculation...

A solving method for constrained optimization problems was designed by combining adaptive penalty function (APF) method and an improved bat algorithm (IBA) based on swarm activity. Firstly, the authors proposed a kind of APF method. And then considering the conditions of constraint violations and the...

Using D-H method develop HY-3 manipulator’s trajectory and establish the kinematic model. Using mechanical system simulation software—ADAMS to simulate manipulator’s trajectory and verify the correctness of theoretical analysis.

In order to study the integration technology of field bus and industrial Ethernet, a scheme of gateway between PROFINET IO and PROFIBUS PA is proposed. Employing Siemens EB200 IO Evaluation Board to access PROFINET IO network, the gateway is implemented with a PROFIBUS PA as an external connection driver....

In order to improve the stability and reliability of the two-wheeled self-balanced vehicle, a redundancy dual-backup method of the battery pack is proposed. The redundancy dual-backup scheme for the power supply system is presented, and the failure detection and switching method are given. In order to...

Many studies on static frequency characteristics have been done yet nodal dynamic frequency response characteristics gain more attentions for the important role frequency plays in power system stability. Influencing factors such as balance power, power shortage and electrical distance are altered during...

In this paper a new permanent magent synchronous motor (PMSM) rotor position estimate algorithm is discussed. The algorithm adjusts the estimated rotor position PI controller, makes the rotor back electromotive force produced by rotor permanent magnet on d axis veins. Compared with other PMSM position...

While fuzzy c-means is a popular soft clustering method, its effectiveness is largely limited to spherical clusters. By applying kernel tricks, the kernel fuzzy c-means algorithm attempts to address this problem by mapping data with nonlinear relationships to appropriate feature spaces. Kernel width...

One infrasonic monitoring network in east-central China is built to study the infrasonic phenomenon caused by spontaneous or artificial events in the atmosphere.Two events of anomalous infrasound waves were recorded at five infrasonic monitoring stations before the Nepal earthquake which happened on...

To improve overall performance of Boot converter, MIT model reference adaptive control (MRAC) scheme was used to control the output voltage. Average model of the boost converter was built and the principle of the MIT MRAC was analyzed. Modified 2nd-order model was used as reference model to improve dynamic...

Substation basic is equipped with electric energy metering system, but the electric energy metering system does not have the energy metering run abnormal alarm function. This paper introduces a measuring equipment, using the existing data of electric energy metering system by expanding calculation, realize...

Substation is always equipped with electric energy metering system which does not have the function of error remote calibration. In this paper, we introduce the error remote calibration system related to energy measuring devices to achieve two functions: on the one hand is to minimize the relevant losses...

This paper presents the methane detection at low concentration based on 2f harmonic signal to achieve highly sensitive monitoring. Since methane is the characteristic gas in power transformer oil once a thermal fault at low temperature (

Owing to large capacity and high speed, DDR SDRAM has been widely used in the data acquisition system of time-of-flight mass spectrometer (TOF-MS) which can detect and analyze biological and chemical macromolecule precisely. Due to the particularity of the requirement of large amounts of data accumulation...

Magnetic nanoparticles have been widely used in the field of biotechnology and medicine, which has a great importance to precise and quantitative detection. This paper introduces a magnetic nanoparticles detection device of low cost, high sensitivity and real-time. When the diameter of the magnetic nanoparticles...

The PTT fiber is one of the elastic polyester fibers Owing to the similar physical and chemical properties of PTT fiber and PET fiber, the current testing standard methods are difficult to measure their blending ratios. According to the density of PTT (1.33 g/cm3) is slightly lower than PET (1.38 g/cm3),...

This paper presents a system designed for automated nucleic acid extraction machine based on magnetic bead separation method. A hardware platform has been established which consists of motor controlling module, temperature controlling module and a computer; also, we designed the system software to achieve...

In order to ensure the security buffer of the 6-UPS space docking mechanism, real-time control based on contact force is needed. In this paper, a highly effective multi-axis force measurement system is built to acquire and analyze the real time force from six separate force sensors. According to the...

According to the pressure testing requirements under high temperature and high pressure environment in oil and gas field, this paper introduced the design and development of a kind of high temperature high pressure sensor chip, and solved the problems of thermal stability of traditional piezoresistive...

It’s usually a complex computing process of mechanical transmission components design. In this paper, a flexible and efficient method has been adopted based on the behavioral-characteristic modeling technique of Pro/E software and the powerful computing function of MathCAD software to optimize the gear...

In dealing with the problem that basic SFLA neglect the information exchange between individuals and sub-population in searching optimal solution, this paper proposes a new improved SFLA based on update rule of the Gravitation Search Algorithm. Based on the ideal from gravitation algorithm, the new SFLA...

A novel method was used in the study of magnetosensitivity in model insects. The equipment was self-made in our laboratory to detect the magnetic choice behavior of insects. The device includes a perspex frame, a coil system, an illumination system and a choice apparatus. The perspex frame is used to...

According to definitions, geometric characteristics and corresponding error evaluation functions of straightness error, flatness error, roundness error, cylindricity error and sphericity error, the concept of evaluation reference of form error is put forward by analyzing the minimum zone evaluation method...

The concept of readers participating in the selection of library materials has been around for some time, but in recent years, with the the popularity of smart mobile phone, new opportunities for patron-based selection have emerged. In this paper, we propose a patron driven acquisitions mode via mobile...

A new vibration cutting device was presented in the paper to offer much high power and high rigidity for the unstable vibration parameters, bad compliance between practical and theory which produced while using conventional vibration cutting equipment. Detailed calculation and structure design were carried...