Observer-based command filtering error compensation fuzzy control method of induction motor

Abstract

The invention discloses an observer-based command filtering error compensation fuzzy control method of an induction motor. Aiming at the problem of non-linearity existing in a driving and control system of the induction motor, a command filtering technology is introduced to a traditional backstepping design method; and meanwhile, by an error compensation mechanism, an error caused by filtering is reduced, so that the control accuracy is improved, and the problem of calculation explosion caused by continuous derivation in traditional backstepping control is successfully solved. According to the method, the rotor angular speed of the induction motor is estimated by a dimension reduction observer; meanwhile, a fuzzy logic system approaches to a non-linear function in the motor driving system, and the command filtering backstepping technology is combined with an adaptive method to construct a controller; after regulation by the method, the motor running can rapidly reach a stable state; and a simulation result shows that by the method, the influence of parameter inaccuracy can be solved, an ideal control effect is favorably ensured, and the rapid and stable response to a rotation speed is achieved.

Description

technical field [0001] The invention belongs to the technical field of position tracking control of asynchronous motors, in particular to an observer-based fuzzy control method for order filtering error compensation of asynchronous motors. Background technique [0002] Induction motors (IMs) are AC motors, also called induction motors, which are mainly used as motors. Asynchronous motors are widely used in industrial and agricultural production, such as machine tools, water pumps, metallurgy, mining equipment and light industrial machinery, etc., all use it as a prime mover, and its capacity ranges from several kilowatts to several thousand kilowatts. The increasingly popular household appliances, such as washing machines, fans, refrigerators, and air conditioners, use one-way asynchronous motors with a capacity ranging from several watts to several kilowatts. In aerospace, computer and other high-tech fields. Asynchronous motors can also be used as generators, such as sma...

AI Technical Summary

Problems solved by technology

However, the continuous derivation of the virtual control function in the traditional backstepping control is easy to cause the problem of "computational explosion"

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