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Heating exchange in district heating network is a complex process with great inertia and longtime delay, it is hard to control the temperature of secondary supplying water effectively with traditional PID controllers. This paper studies the fuzzy PID method and models the heat exchanger system through...

Acquisition, tracking and pointing(ATP)system is the core of high speed and large capacity of laser communication in atmosphere, spot jitter generated by the disturbances among long distance laser communication has seriously affected the precise alignment between laser communication terminals, and greatly...

Safety is crucial in the shipping industry, however in the current export container activity there are many factors that can cause an accident. To prevent an accident, regulation play an important role. With regulation, safety can be implemented to decrease the risk. Therefore, IMO has amended the SOLAS's...

3-triethoxysilylpropylamine (KH550) polymer was coated on quartz fibers by a simple dipping process without any complex chemical treatments in order to increase the bonding strength between quartz fibers and boron doped silicone resin matrix. The effect of coating on the interface of quartz fiber reinforced...

Aiming at the high voltage circuit breaker three-phase permanent magnet brushless DC motor, this paper studies the motion characteristics of the motor operating mechanism under different control strategies. Considering the switching operation process of high voltage circuit breaker, we established the...

The quadrotor is a non-linear, multivariable, strongly coupled under actuated system that is very difficult to control precisely. In this paper, the mathematic model of the quadrotor is established. Since the mathematical model is nonlinear, the model used in the controller and the simulation analysis...

Polyurethane prodrugs with different drug contents were synthesized using polycaprolactone, hexamethylene diisocyanate and ciprofloxacin. The thermal analysis of the materials was carried out by DSC and TG. Results showed that the crystallinity of the materials reduced as the drug contents increased...

A novel adsorbent was prepared by grafted the Dibenzo-18-Crown-6-Ether (DB18C6) on D564 resins and characterized by Thermogravimetry (TG) and Fourier Transform Infrared Spectroscopy (FTIR). Adsorption of Sr2+ from aqueous solutions was investigated in batch method as a function of contact time, concentration...

In order to study the pyrolysis process of Ethylene Propylene Diene Monomer (EPDM) insulation material and its compression mechanical behaviour under high strain rates, the thermal stability of EPDM was analysed by TGA in the first place. Based on the TG curve and the thermal degradation temperature,...

With microcrystal muscovite (MCM) as the carrier, butyl titanate as the source of titanium, acetic acid as the inhibitors, copper nitrate as dopant, Cu-doped nano-TiO2/MCM composites were prepared by the sol–gel method. Then the composites were calcined at 500 oC for 2 hours. The samples were characterized...

In engineering design and experiment, the speed of DC motor is often controlled. The common way is to generate PWM wave through timer, and adjust the speed of motor according to duty cycle. In theory, the velocity is proportional to the duty ratio. But in practice, because of the resistance, friction,...

The trend toward high power density engines has led to new implementation of more intelligent thermal management systems. Advanced thermal management systems for internal combustion engines can help in reducing the fuel consumption, pollutant emissions, warm up time, noise level as well as improving...

The inhibition of noise and vibration on switched reluctance motor (SRM) was studied in this paper to improve the speed regulation system. Nonlinear dynamic simulation model based on the SRM is studied based on torque estimation method of torque ripple. Time-varying and nonlinear characteristics of SR...

MgAl2O4 spinel, as support of the 10Ni/MgAl2O4 catalyst which used for coke oven gas dry reforming, was prepared by sol-gel, coprecipitation and urea hydrolysis method. The catalysts were prepared by impregnation. The MgAl2O4 and 10Ni/MgAl2O4 were both calcined at 800 oC for 5 h and the samples were...

The traditional power factor correction (PFC) LED drive power due to its input rectifier circuit for nonlinear circuits, can bring a large number of high frequency current to power grid harmonic, the rectifier bridge after large capacitor filter will reduce the conduction Angle of input voltage, reducing...

By using the semi-tensor product of matrices theory method, this paper studies the Pan Boolean algebra PID control algorithm's conversion problem. It was found that the power computation of n-ary logical structure matrix can be converted into counting its (n+1)-ary structure matrix by its truth table....

This paper used PID, fuzzy and model predictive control methods to control the indoor air temperature and absolute humidity of an A/C system. Simulations were carried out with the three methods in Matlab and the three methods were compared in terms of static and dynamic characteristics. Results showed...

This paper introduces the basic principle of Boost circuit topology and photovoltaic maximum power point tracking technology.According to the characteristics of photovoltaic cells output nonlinearity, this paper designs a fuzzy-PID controller to track the maximum power point of PV cell. The controller...

The performance of PID controller depends on the combination of the control parameters. This paper puts emphasis on the study of particle swarm optimization (PSO) in parameter optimization for PID controller. Firstly, according to a great amount of experiment, a set of formulas were proposed in dealing...

Welding bath depth control system based on single neuron self-tuning PID is designed, and several learning algorithms for neuron weights are simulated, the simulation results show that this controller reacts quickly and has good stability. The experiment with various cross-section and seam-gap workpiece...

Aiming at the problem of agricultural robots such as being difficult to adapt to the complex operating environment in field ,highter cost for promotion and application ,designed an automatic steering system based on the steering wheel angle-sensor and the steering motor ,formed a closed-loop control...

Several SO3H-functionalized acidic ionic liquids (ILs) were synthesized by two-step method, using 1, 3-propane sulfone and 1, 4-Butanesultone as raw materials, respectively. It is noteworthy that the ionic liquid using 2-ethyl-4-methylimidazole as source has not been reported. Esterification of 1-butanol...

The varieties and interspecies hybrids of potato selected on the basis of Ural Scientific Research Veterinary Institute Federal State Budgetary Scientific Institution "Ural Federal Agrarian Scientific Research Centre, Ural Branch of the Russian Academy of Science" (Ural national research institute of...

This article mainly introduces the design of the continuous and automatic controlled congestion irrigator based on STC230 color sensor, which contains hardware design and software design. There are three aspects being taken account of in hardware design. They are the power supply, the whole single processing...

The organosilicon-acrylic resin/LDHs nanocomposite was prepared from acrylate, organosilicon Mg-Al-AA-LDHs as well as emulsifier etc with emulsion polymerization methods. The samples prepared were characterized by optical , thermal and gas barrier capabilities testing, Results show the samples were nanocomposion...

PID controller was widely used in various kinds of control process for its good stability and high reliability. But PID control system can not reach the expected effect for some nonlinear and time-varying characteristics of complex production process control. The fuzzy PID control method was put forward...

Multiple Degrees of Freedom (DOF) parallel robots possess the advantages of being compact structure, great stiffness, stability and high accuracy, so such platforms have been widely used in application areas as diverse as the spacecraft motion simulators, radio telescopes, and medical rehabilitation...

Rigid polyurethane foams (RPUFs) were prepared by heteroaromatic polyol as the matrix polyol, methylphosphonate (DMMP) was added to improve its flame retardancy, and the relative performances were studied. Thermal stability were measured by dynamic mechanical analysis (DMA) and thermo gravimetric analysis...

In order to meet the demand of personalized cold drinks in the market, the refrigeration technology was analyzed and researched, and the scheme of staged cooling was established. Based on the principle of semiconductor refrigeration technology, which the semiconductor refrigeration device controlled...

Brushless DC motor (BLDCM) is a nonlinear system of multi-variable, high-coupling and time-varying. Considering the high-precision speed control requirement of BLDCM, this paper designs a speed control system of BLDCM based on fuzzy controller And active disturbance rejection controller (ADRC). As the...

A new control system of DC source of plasma arc welding was designed according to the shortcomings of time-varying and nonlinearity in the design process of DC source of plasma arc welding and traditional control algorithms could not be overcome these disadvantage. Main circuit and control circuit were...

Pixhawk is an open-source flight control system. The research on the attitude control algorithm Pixhawk uses provides a good reference for the use and development of the Pixhawk. In this paper, it provides a theoretical analysis of the attitude control algorithm of multi-rotors in Pixhawk, and it also...

Through the research on the optimization of FM power plant, main disturbance of the power grid in a side of turbine, the boiler side mainly response delay and inertia and coal quality and for coal and furnace dust, aimed at the problems existing in the traditional PID in the unit control, based on the...

For shorting the shifting time and improving the vehicle acceleration, it is necessary to develop an excellent control strategy of electing and shifting. In this paper we developed the strategy of the electric shifting actuators based on fuzzy PID control and established a fuzzy dual closed-loop PID...

For the realization of the industrial production of automatic data collection and intelligent exploration missions, a line tracking robot based on MSC1210 MCU is designed. Through demonstration and comparison of several design schemes, completed the hardware design of automatic line tracking robot.The...

In order to improve the utilization of the solar energy,a PV power optimizer was investigated in this paper. According to the distributed maximum power point(DMPP) architecture, each of the PV cells is equipped with a power optimizer. The power optimizer utilizing nonlinear adaptive control, which is...

Sepiolite as catalyst carrier material, now commonly used in low temperature, for high temperature applications was very rare. ZrO2/sepiolite precursor was prepared by Chemical precipitation method, catalyst coating material was prepared at 600 , the samples were aged at 1000 . The powders with and without...

A kind of attack angle tracking controller with a former similar to PID control is proposed based on the pitch channel model of hypersonic aircraft released by America air force research center. Also the speed of the aircraft is controlled to tracking to a constant, which will make the system more stable...

Because of the strong alkalinity and large amount of heavy metals in red mud, many countries have paid more attention to red mud. According to the traditional treatment method, an innovative scheme is proposed in this paper, which uses red mud (RM), ground granulated blastfurnace slag (GGBS), fly ash...

Accurate and rapid control of the temperature of electric heating furnace in industrial production has important practical significance and application value. In this paper, the electric heating furnace temperature control system is designed based on C51 microcontroller, equipped with temperature sensors,...

To simulate the unexpected bonfire environment during weapon’s life time, a high temperature baking test system is established. It chooses the high-temperature furnaces as heating terminal, develops a heat control instrument and programs the computer monitoring software. Considering the problems of the...

In the era of globalization, human beings are in the "cultural supermarket", from which people select the global culture concentrating there. The strategy of "going out" of Chinese culture is to place Chinese culture in this "cultural supermarket", reflecting the new development opportunities for Chinese...

In order to improve the controllability of coal mine disconnector breaking tests and realize intelligent operation, this paper put forward a simulation of fuzzy PID control system for motor mechanism of coal mine disconnector breaking test. The simulation model of motor mechanism speed, position, and...

This article take the boiler water temperature controller for research object and investigate the control system based on taking the SCM a microcontroller as the core as a boiler controller, sensor technology, the basis for the system design to achieve the temperature and water level of the collection....

Abstract: Most of the industrial controllers in use today utilize PID controllers. In this paper four methods for tuning of a PID controller are compared. A mathematical model of the most commonly used dynamic system i.e., a d.c. motor is derived and a PID controller is used in conjunction to it. Ziegler-Nichols...

The reliability of DC operating power is largely decided by the storage battery in power system. In order to satisfy large-capacity storage battery discharge demand and requirements for energy-saving and emission-reduction, a new intelligent battery discharging device that can feedback energy was designed....

Quad-rotor aircraft can be widely used in military and civilian fields, and it is drawing a great deal of attention. Combining with PI algorithm and quaternion method, this article resolves the aircraft flight attitude and complete aircraft attitude control with improved integral separation PID control...

The electric control system of the electric vehicle battery is researched, a new fuzzy reasoning method is introduced, and the fuzzy PID controller is set up, the optimization and feedback idea are introduced in the this reasoning method, according to the different optimization indexes, the reasoning...

Traditional PID controllers, despite their widespread use due to simplicity and robustness, often falter in handling nonlinearities and time-varying systems without frequent retuning. Since scholars are not satisfied with conventional control theory, an integration of neural network and PID controlled...

According to the measurement principle of thrombus elasticity, a kind of supporting structure for the thromboelastography is designed. A kind of magnetic suspension support structure combined with active magnetic bearings and passive magnetic bearings is proposed. The radial suspension of the magnetic...