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Energy-saving fuzzy controller method for synchronous motor

A fuzzy controller, synchronous motor technology, applied in motor control, AC motor control, control system and other directions, can solve the problems of fuzzy control flexibility, insufficient adaptability, insufficient control effect, etc., to achieve good dynamic and static performance, improve speed response , The effect of meeting the needs of high-precision systems

Inactive Publication Date: 2019-04-16
BAOJI UNIV OF ARTS & SCI
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Problems solved by technology

[0004] The object of the present invention is to provide synchronous motor energy-saving fuzzy controller method, to solve the existing synchronous motor fuzzy control proposed in the above-mentioned background technology in the static characteristics, and in the fuzzy control flexibility and adaptability exist deficiencies, in the control effect There are deficiencies in

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  • Energy-saving fuzzy controller method for synchronous motor
  • Energy-saving fuzzy controller method for synchronous motor

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Embodiment Construction

[0019] The fuzzy PID controller designed and applied to the speed loop adopts a widely used two-dimensional fuzzy controller. One input variable is the error E between the motor output speed feedback value and the given speed, and the other input variable is the change rate EC of the speed error. , that is, the difference of the speed error per unit time; the output terminal is designed as multi-output, because the fuzzy PID controller adds fuzzy control on the basis of traditional PID control, so it only needs to be slightly modified on the basis of traditional PID adjustment parameters That is, take the correction value ΔK of the three parameters P, I, D of the traditional PID controller p , ΔK i , ΔK d As the output of the fuzzy controller; record E, EC, ΔK p , ΔK i , ΔK d The fuzzy variable is K p , k i , k d , the fuzzy subsets are NB (negative large), NM (negative medium), NS (negative small), ZO (zero), PS (positive small), PM (positive medium), PB (positive larg...

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Abstract

The invention discloses an energy-saving fuzzy controller method for a synchronous motor, which comprises a fuzzy interface, a knowledge base, a fuzzy inference machine and a defuzzy interface. The method comprises the following steps of step 1, constructing a fuzzy controller in a Matlab simulation system; Step 2, combining the fuzzy controller constructed in the step 1 with a traditional PID controller to form a fuzzy PID controller. According to the invention, a composite controller is designed to improve the speed response, so that the system is good in dynamic and static performance. Therequirements of a high-precision system are met.

Description

technical field [0001] The invention belongs to the technical field of synchronous motor energy-saving control, and in particular relates to a synchronous motor energy-saving fuzzy controller method. Background technique [0002] The method of generating current on the rotor side of the synchronous motor is different from that of the asynchronous motor, so that the synchronous motor has the valuable characteristic of adjustable power factor, which is the energy-saving mechanism of the synchronous motor; the fuzzy control adopts the system error and error change as the input statement The variable two-dimensional fuzzy controller structure can deal with the uncertain characteristics of the controlled object. It has the characteristics of simple implementation method, fast operation and strong real-time performance, and the system can obtain good dynamic characteristics. [0003] The existing fuzzy control of synchronous motors has deficiencies in static characteristics, flexi...

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Application Information

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IPC IPC(8): H02P23/00H02P6/34H02P25/022
CPCH02P23/0013H02P25/022H02P2207/05H02P6/34
Inventor 郑雁翎
Owner BAOJI UNIV OF ARTS & SCI
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