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FC and SMO based control system free of speed controller

A technology without speed sensor and control system, applied in control system, vector control system, control generator, etc., can solve the problems of complex principle and large amount of calculation.

Inactive Publication Date: 2016-10-26
SHANGHAI INST OF TECH
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Problems solved by technology

[0005] In order to overcome the existing problems of the rotor angle and rotational speed estimation method of the permanent magnet synchronous motor based on the speed sensor, the principle is complicated, the calculation amount is large, and the integral saturation is solved. A speed sensorless control system based on FC and SMO, the proportional integral coefficient of the PI regulator is adjusted through the fuzzy controller, so that the PI regulator can have good dynamic and steady performance in a wide speed range of the motor

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  • FC and SMO based control system free of speed controller
  • FC and SMO based control system free of speed controller
  • FC and SMO based control system free of speed controller

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[0125] The technical solutions in the embodiments of the present invention will be clearly and completely described and discussed below in conjunction with the accompanying drawings of the present invention. Obviously, what is described here is only a part of the examples of the present invention, not all examples. Based on the present invention All other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0126] see figure 1 , now consider the general situation in the patent of the present invention, there is a switching surface s(x)=s(x 1 ,x 2 ,···,x n )=0, it will x=f(x)(x∈R n ) The state space of this system is divided into upper and lower parts s>0 and sfigure 1 As shown, there are three cases of moving points on the switching surface. Point A is a common point, and when it reaches near the switching surface s=0, the moving point passes through point A; Point B is the starti...

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Abstract

The invention discloses an FC and SMO based control system free of a speed controller, a sliding-mode observer easy for engineering realization is used to detect the position and speed of a motor rotor, and a fuzzy controller replaces a traditional P I speed regulator. In a PMSM (Permanent Magnet Synchronous Motor) vector control system, the traditional P I regulator is obvious in time delay and low in self-adaptation, and the robustness of fuzzy control is high, so that influence of interference and parameter change on the control effect is greatly weakened, the system is especially suitable for controlling nonlinear, time-variable and purely lagging systems, fuzzy control is designed on the basis of heuristic knowledge and language decision rules, the process and method of manual control can be simulated, the adaptation capability of the control system is enhanced, the intelligent level is relatively high, and the control system is very suitable for objects in which mathematical models are hard to obtain, dynamic features are not easy to master or change is very substantial.

Description

technical field [0001] The invention relates to the technical field of speed sensorless speed measurement, in particular to a speed sensorless control system based on FC and SMO. Background technique [0002] Permanent Magnet Synchronous Motor (PMSM) has the advantages of high power density, high energy conversion efficiency, wide speed range, small size, light weight, etc., and has been widely used in industrial, civil, military and other fields. [0003] The control of the permanent magnet synchronous motor needs to obtain the position and speed information of the motor rotor. At present, the commonly used position sensors include photoelectric encoders, resolvers and other devices. The use of these devices not only increases the size and cost of the system, but also reduces the system cost. It also limits the application of permanent magnet synchronous motors in special environments. In order to solve many defects caused by mechanical sensors, the research of sensorless c...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P21/00H02P21/13H02P21/18
CPCH02P21/0007H02P21/13
Inventor 张海刚张磊叶银忠万衡王步来徐兵华容卢建宁
Owner SHANGHAI INST OF TECH
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