Relief distribution is one of the key steps for emergency response after a major public emergency. Relief commodities requirements of demand node are presented intervals based on robust optimization. The facilities failure risk is processed by stochastic programming. The model of emergency location-routing...

Present a novel method of automatic recognition for analog measuring instruments with region growing. The whole algorithm consists of pointer extraction algorithms based on region growing method and pointer recognition algorithms based on hit-miss transform method or least square method. Besides, the...

For a valve controlled cylinder speed system with separate control of actuator ports, combining static operation point theory and load sensitivity technology, a new pressure control method is proposed. An optimal pressure based on command speed and load force was the input of pressure controller. At...

In order to get the influence parameters on the temperature in the refrigerated compartment, the influence of temperature on the temperature of the refrigerated compartment was established, and the influence of the sensitive factors on the temperature of the refrigerated compartment was analyzed. The...

In order to improve the efficiency of robot teach, this paper presents a direct teaching control strategy for industrial robot with no need for multidimensional force/torque sensor. The kinematics and statics of a specific six-DOF robot are analyzed, and the joints’ torque is educed. In the direct teaching...

The paper proposes an improved circuit based on peak value hold and compensation sub-circuit. Simulation proves the circuit is suitable to signal in range from 50hz to 1Mhz while keeping low harmonic distortion. The circuit is lower cost than usual circuit.

The paper introduces the design using capacitive humidity sensors to detect the humidity. By 555 oscillators, the capacitive humidity sensors can change the output frequency. The microchip controller can account the frequency and then according to the math equation, obtaining the humidity information.

A harmonic error measurement system which can simulate the actual operating conditions of electronic instrument transformer was established for electronic instrument transformer harmonic error measurement. The system consists of High-power current and voltage harmonic source which is used to output fundamental...

In recent years, power grid assessments are more and more important with the continuous development of distribution network. Although much research has been done about evaluation method of medium voltage distribution network, it is hard to establish a united evaluation system of distribution network...

Effective build assembly deviation transfer path is the basis for fast and reliable assembly precision prediction, for which proposed a deviation transfer vector loop construction method based on assembly constraint. First datum reference frames, reference path, assembly connection point and other parameters...

The work content of nuclear power plant project prophase covers a wide range, involves many kinds of professional, which cause the work coordination of the whole stage more difficult, have very strong complexity and uncertainty. On the basis of WBS decomposition in the initial feasibility study phase...

In electric power system reform environment, grid companies have to estimate the economic performance of power grid construction project completed with a more market-oriented perspective. Therefore, economic efficiency post-appraisal model of the power grid is proposed in this paper. In view of the problem...

The environment monitoring system is an important component of the smart home system. The real-time collection of data related to the temperature, humidity, luminosity plays a vital role in improving people’s household living environment. To solve the problems of complex routing, low intelligence and...

According to the structures of internal and external information networks of power enterprises and the characteristics of enterprise network perimeter information interactions, the paper designs a security audit model and a security assessment framework based on state graph perception, proposes related...

This paper researched about the MTBF evaluation method and the reliability improvement technologies of typical power adapter. Firstly, the basic structure of a typical power adapter was introduced; secondly, the reliability model was built, and the reliability parameter MTBF was evaluated; thirdly, some...

A novel speed servo control approach for the elevator door driving system is proposed to improve the performance. The control approach includes a current loop and a speed loop. The fuzzy logic controller is utilized in the speed loop, where the logic rules are designed and parameters are adjusted based...

In order to study the automatic control of multi - functional home wiring board, and can achieve real-time measurement of power consumption function, this paper uses the microcontroller to control the design of a human infrared inductive electronic multi-function home wiring board. It is mainly composed...

Wearable devices have got rapidly development in recent years, and the information transmission of them becomes an international research focus. To meet the requirement of reliability, real time and high throughput, ZigBee protocol plays an important role with its own inherent advantages and reasonable...

In order to improve the efficiency of data fusion in wireless sensor networks and reduce the energy consumption of the system, a new method of data fusion based on GSO algorithm for optimizing BP neural network is proposed. Sensor nodes sensing data, and then use the GSO algorithm to optimize the BP...

The system of robot virtual operation training requires effective soft-tissue organ models, of which the shape and size shall be obtained according to patients’ medical image. The way of cutting required organ image from CT scans with noise background is essentially important. This paper proposes a kind...

Most of the upper limb amputees apply myoelectric control the prosthetic hand to make it move and grasp objects. Restricted by decoding technology of electromyography(EMG) signals, prosthetic hands only have limited grasp patterns and limited levels of grasping force . So it is difficult for prosthetic...

Multi-freedom prosthetic hand is multivariable system which has many inputs and outputs. The design of fuzzy logic controller is very complex because so many fuzzy control systems have to be designed based on conventional idea. Thus, a multivariable fuzzy control is proposed. An effective strategy is...

The Voltage Controlled Oscillator circuit had been analyzed in virtual test via NI Multisim 10.1 software. By changing the input DC voltage, the changing rule of the output waveform was observed, has read the cycle and calculate the frequency of the output waveform in conformity with the theoretical...

Power analysis, proposed by Paul Kocher in 1998, is now a common kind of side channel attack on cryptographic devices. Mask technology protects devices by randomizing the intermediate values that are processed by cryptographic devices which makes the power consumption independent of the intermediate...

The upper-limb rehabilitation and training process with virtual reality-based systems makes patients anxious to some extent. Augmented reality (AR) technology works by enhancing one’s current perception of reality, overlaying the computer-generated coaching information on the real exercise environment,...

In order to study the influence of different knife rollers rotation modes for the wind field inside the diversion cover of the sugarcane leaf cutting and returning to field machine equipped with flexible cutters, the ALE method of finite element software LS-DYNA was applied to operate the simulation...

The internal flow field model of valve spool and valve sleeve annular gap was established. The model was called oil film. The fluid motion state space was laminar flow by calculating of Reynolds number. The formulas about resistance torque and leakage of the valve spool and the valve sleeve annular gap...

Taking an office building in Changsha city, Hunan Province as the research object, its all-year hourly dynamic load is simulated by EnergyPlus software. On this basis, a simulation model of U-tube ground heat exchangers is built with the GSHP design software of GLD2012. The heat balance problem of the...

In this paper, a pulse width modulation (PWM) control approach to speed trackong control is developed for the three-phase induction motor in electric vehicles. The PWM technique is amployed to design controllers. By incorporating the three-phase bridge recifier into the motor based on the PWM technique...

The PLC control system is used to control and adjust the parameters in the process of high strength steel production, and the working principle and process of PLC control is introduced. Experience of production practice shows that the system has a strong operational and practical, can greatly improve...

The paper shows theoretical analysis and experimental study on the performance of the pump / valve hybrid drive system. Taking AE0505D16 type piezoelectric stack as power source, design and manufacture two new structures of pump: symmetric and staggered single-chambered dual piezoelectric stack pump....

Numerical control (NC) lathe plays an important role in the production of mechanical parts. Because of its complicated structures and frequent operation, there exists lots of failures. When the failure happens, the NC lathe stops working, then directly lower the productive efficiency. In order to help...

The normal operation of power equipment is directly related to the normal life of people in the relevant areas and the normal operation of the enterprise. Regardless of the quality factor of equipment, the most important factor affecting the normal operation of the equipment is the working temperature...

Mechatronics is a kind of composite technology, combining the mechanical technology , microelectronics technology and information technology . The mechanical and electrical integration technology is the inevitable trend of the development of machinery industry, and the development of mechatronics technology...

In order to realize the system`s fast update, a new kind of machine vision solution is designed. It uses video input port and Gige Vision IP , and connects between the system and the computer, which is realized by FPGA technology. The new design plan contains new Gige Visiong standard and the core of...

Due to the extensive use of power electronic devices and nonlinear loads, the resulting of distortion in power grid voltage and current waveform becomes more and more serious. There not only exist integer harmonics of larger containing rate, but also include non integer harmonics of abundant spectral...

Aiming at humanoid robot’s dual-arm collision avoidance motion planning, this paper firstly establishes kinematics model for humanoid robot and mathematic model for Workspace Target Areas (WTAs). Secondly, it has deduced inverse kinematics formula based on DLS-SVD method and proposed a bi-directional...

Gear box of the gear crack is the failure forms of gear transmission frequently. Wavelet neural network has the perfect theoretical system, clear the algorithm process, the powerful data identification and simulation function. As traditional gradient descending method of wavelet neural network is easy...

In the robot soccer competition whether able to accurately predict the ball’s status direct impact on the completeness of the robot’s motion, also determining the result of the game. In this paper, we have using the Kalman Filter to optimize the status data collected by the system, eliminate the noises...

In this paper, heat characteristics, energy conversion efficiency and energy transmission distance of electric hot air de-icing device are researched. Thermal energy conversion formula of jet bushing of hot air device is obtained. Finite element analysis software is used to establish the computing model...

With a growing trend of social aging, the issue of “empty-nest” elderly is increasingly serious and children are more eager to keep an eye on the living security of the elderly in real time. In light of the increasing demand on home security monitoring, the real-time performance of existing security...

In this paper, a nonlinear control method used to make two different chaotic systems achieve synchronization within finite time is designed based on the sliding mode variable structure control theory and the driving response control method. In this method, the reaching law of the sliding mode variable...

This paper is about the static error measuring strategy of five-axis CNC machine tool basing on the touch-trigger probe, which is the mainly measuring tool to detect the static error of the five-axis machine tool of RTTTR and RRTTT topological structure. According to kinematic chain of the five-axis...

The traditional reliability models of CNC machine tools are based on the assumption that the machine after repair is as-good-as-new or as-bad-as-new. But it is not the precise model compared with the Engineering practice. This article focuses on the repair degree to the sub-system of CNC machine tools,...

Hydraulic Component Design hydraulic components design library offered by AMESim was used to simulate the internal structure and working principle of direct operated relief valve. The influence of spring stiffness, spring pre-tightening force, spool weight and damping hole diameter on direct operated...

Rolling force model was developed in which the contact arc surface was adopted as slipping and stagnant friction. The positions of neutral plane, forward and backward slipping zone, and stagnant zone were computed with improved genetic algorithm. Rolling forces of hot strip were simulated, which agreed...

By taking the gear box of a ship lock’s hoisting machine as the research object, because of the vibration signal of a fault gate has the characteristics of both randomness and non-stationary, the chaos oscillator detection theory is introduced into the diagnosis for gear fault. Research the dynamic behavior...

According to requirements of automatic system, this paper designs a transmission and control system for industrial workpiece. In the system, the control part is based on the touch screen module and the programmable controller; the implement part consists of pneumatic solenoid valve-cylinder pneumatic-drive...

When paint-spraying a batch of small size parts in an assembly line, for some parts with different weights, the speed of sparger device transmission conveyor should keep unchanged in order to ensure the paint-spraying quality and effect. Through analysis and comparison to the structure of throttling...

The term of design robot (D-Robot) refers to a finite state computing entity that changes the state of the object through a set of variable programmed actions for the performance of a variety of tasks that need both action-level mental activities of human designers and iterative operational activities....

The airborne pod system can reduce the difficulty of power line inspection and enhance the degree of automation for inspection tasks. At the same time it also has a higher requirement of the structure performance of the airborne pod system. Therefore the finite element statics analysis and modal analysis...

This paper introduces self-adaptive fuzzy PID controller to improve static and dynamic performance of magnetic suspension systems aiming at the characteristics of nonlinearity, hysteresis and uncertain model of the systems. The simulation results demonstrate that this fuzzy self-adaptive PID controller...

Based on CAT (hydraulic computer aided test technology), by use of multiple sensors gathering experimental signals, the testing platform develops performance testing work to axial piston pump on the hydraulic controlling platform. Based on digital computer and LabVIEW graphic development platform from...

The three-dimensional geometric model of hydraulic retarder is built based on an enterprise production as reference prototype, On CFD platform, based on the three-dimensional entity model of the hydraulic retarder, the internal flow field at full-filling condition is simulated and the braking performance...

Uers organize networks and exchanges with the help of social networks, clasiffy the friend to the so-called social circle of friends. Construction of such a social circle will take the user a great deal of time. This paper presents a machine learning methods, he mutual networking between friends is as...