Networked AC (alternating current) motor LS-SVM (least squares support vector machine) generalized inverse decoupling control method based on active-disturbance rejection

Abstract

The invention discloses a networked AC (alternating current) motor LS-SVM (least squares support vector machine) generalized inverse decoupling control method based on active-disturbance rejection. According to the method, an SVPWM (space vector pulse width modulation) controller, a three-phase voltage type PWM (pulse width modulation) inverter, a AC asynchronous motor, Clarke transformation, a rotor flux linkage observer and K / P transformation are connected to form a composite controlled object, and an LS-SVM generalized inverse system and the composite controlled object are connected in series to form a pseudo-linear composite system, and the AC asynchronous motor is decoupled into a rotating speed pseudo-linear sub-system and a rotor flux linkage pseudo-linear sub-system; active-disturbance rejection control is introduced into the pseudo-linear composite system, and networked closed-loop control is formed by communication network actuator nodes and sensor nodes. According to the technical scheme, the defects of low control accuracy, unknown AC motor model or parameters, difficulties in the inverse system construction under small sample condition, weak external disturbance robustness in a network environment, poor open-loop stability and the like in the prior art can be overcome, so that linear decoupling and high-performance control of the AC asynchronous motor can be realized in the network environment.

Description

technical field [0001] The invention relates to the technical field of networked AC power transmission and control systems, in particular to a generalized inverse decoupling control method for a networked AC motor LS-SVM based on active disturbance rejection. Background technique [0002] AC asynchronous motor is a complex multi-variable, nonlinear and strongly coupled control object. In the networked control of AC asynchronous motor, the introduction of networked control system brings many uncertain factors to the motor control. Therefore, it is necessary to realize the network The high-performance control of AC induction motors in the environment requires multi-variable linearization decoupling of AC induction motors. [0003] At present, the linearization and decoupling control methods of AC asynchronous motor mainly include feedback linearization method and inverse system method. Among them, the feedback linearization decoupling method requires that all states can be me...

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Problems solved by technology

[0005] In the process of realizing the present invention, the inventors found that in the prior art there are at least low control accuracy, difficulty in constructing an inverse system under conditions of unknown AC motor model or parameters and small samples, weak robustness to external disturbances in the network environment, and open Defects such as poor ring stability

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