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Through the analysis of the multi variables, nonlinear and strong coupling system of two AC induction motors, this paper designs a fuzzy PID controller that the structure is simple and the application is easy. The fuzzy control does not require a precise mathematical modeling of the system nor complex computations. It only relies on the human capability to understand the system's behavior and is based...
Three-motor variable-freqency speed-regulation synchronous system is a multi-input multi-output(MIMO), nonlinear, and coupling system. The mathematic model of the system is established in the way of analytical expression. Self-tuning PID controllers based on DRNN neural network and neuron decoupling compensator are adopted to realize the adaptive decoupling control of speed and tension. The experiment...
In this paper, we mainly research control technology for permanent magnet linear synchronous motor (PMLSM) based on hall-element, which is a part of free piston generator used in hybrid vehicles, adopt vector control method in which d-axis current of stator is set to be zero, combined with SVPWM and construct software and hardware platform of the control system, based on which we do some relevant...
A particular and real-time image processing application is proposed to detect pathological changes to fish. Images are periodically acquired from a video source using specialized control software. Then, analog signals are converted into digital signals by image collection card. According to the theory of shrink and expand, binary image is used to eliminate impurity. After that, use the concept of...
Taking the multi-variable of synchronization system of the AC induction motors as study object, focusing on the system of induction motors powered by current-tract SPWM transducers, the mathematical model of the system of two motors is established. Combining decoupling technology of adaptive neuron decoupling compensator, RBF neural network adaptive PID controller is adopted to design the neural network...
This paper proposes a digital control system based on ARM micro processor LPC2214, analyses this control systempsilas structure and realization, and introduces a practical full bridge phase-shift ZVZCS PWM converter topology. Theory analysisses and experiments have showed that this PWM full bridge converter based on the digital control can realize ZVS of the leading-legs and ZCS of the lagging-legs...
The paper takes the multi-variable of synchronous system of the AC induction motors as study object, focuses on the system of induction motors powered by current-tract SPWM transducers, establishes the unified model of the system of two motor depends on the alpha, beta static reference frame. It adopts the adaptive PSD controller with multi-variable single neural unit to perform the decoupling control...
The paper takes the multi-variable of synchronous system of the AC induction motors as study object, focuses on the system of induction motors powered by current-tract SPWM transducers, establishes the mathematical model of the system of two motors. It adopts a reformative single neuron adaptive PSD controller that based on variable speed integral separation to perform the decoupling control of speed...
With the continuous development of water-saving irrigation, agricultural productpsilas deep process, greenhouse control in the agriculture, more and more variable frequency equipments, rectifier devices and other power electronic equipments have been used. But owing to the use of these equipments, harmonic pollution problem in power grid is more serious. Active filter is an effective method to the...
On the basis of mathematic model analysis of multi-motor synchronous system, intelligent decoupling technology of multi-variable system is introduced to design neural network controller that is composed of self-turning PID controller based on diagonal recurrent neural network and adaptive neuron decoupling compensator, which make use of serial open loop decoupling strategy of adaptive neuron decoupling...
The paper briefly introduces the constitution and the theory of operation of a computer-based remote monitoring and controlling system of factory aquatic products breeding with multi-environmental factors. This system is composed of many single-chip microcomputers used as fishponds controlling computers and two industrial control computers, one is used as remote monitoring computer and the other as...
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