Discrete control method of command filter for permanent magnet synchronous motor considering input saturation

Abstract

The invention belongs to the technical field of position tracking control of permanent magnet synchronous motors, and specifically discloses a command filter discrete control method of permanent magnet synchronous motors considering input saturation. This method aims at the input saturation problem that is easy to occur in the permanent magnet synchronous motor, and combines the Euler method to establish the discrete system model of the permanent magnet synchronous motor; the command filter control technology is introduced into the traditional backstepping method, which overcomes the problems existing in the backstepping control algorithm. "Computational complexity" problem; using radial basis function neural network to process high-order nonlinear terms in the discrete system of permanent magnet synchronous motors, and constructing a command filter controller for discrete systems of permanent magnet synchronous motors considering input saturation; the method of the present invention can Overcome the influence of input saturation and ensure the ideal control effect, and realize the fast and stable operation of the motor.

Description

technical field [0001] The invention belongs to the technical field of position tracking control of permanent magnet synchronous motors, in particular to a command filter discrete control method of permanent magnet synchronous motors considering input saturation. Background technique [0002] In recent years, with the rapid development of information technology, automation technology and microelectronics technology, permanent magnet synchronous motors are widely used in industrial and agricultural production. Compared with traditional motors, permanent magnet synchronous motors have the advantages of simple structure, small size, and high efficiency. Magnetic synchronous motors are constantly being improved. The permanent magnet generates the magnetic field of the permanent magnet synchronous motor, thereby avoiding the excitation loss caused by the magnetic field generated by the excitation current, so that the loss of the motor is low, the production cost is reduced, and ...

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Problems solved by technology

In addition, for some high-order systems with high nonlinearity and uncertain parameters, the nonlinear term will make the controller design very complicated, which is not conducive to the online control of the computer control system. Related research has proposed the fuzzy logic system (FLS) Approximate theories such as neural networks (NN) simplify the system and make the design of the controller simpler

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