PID (proportional, integral and differential) neural network controller-based ultrahigh-speed permanent magnet synchronous motor rotating speed control method

Abstract

The invention relates to a PID neural network controller-based ultrahigh-speed permanent magnet synchronous motor rotating speed control method. The PID neural network controller-based ultrahigh-speedpermanent magnet synchronous motor rotating speed control method comprises structuring a double-closed-loop ultrahigh-speed permanent magnet synchronous motor control flow chart with a current innerloop and a rotating speed outer loop, wherein the rotating speed outer loop acquires actual rotating speed value through a rotating speed estimation module and generates control signals through a PIDneural network controller, and the current inner loop is provided with a PID regulator. The PID neural network controller structures a neural network model through static and dynamic functions and dynamically corrects neural network link weight through back-propagation algorithms, thereby achieving a learning and memory function and improving system self-adaptability. The PID neural network controller-based ultrahigh-speed permanent magnet synchronous motor rotating speed control method can effectively achieve reliable, rapid and stable rotating speed control of an ultrahigh-speed permanent magnet synchronous motor.

Description

technical field [0001] The invention belongs to the technical field of motor control, in particular to a sensorless ultra-high-speed permanent magnet synchronous motor speed control method based on a PID neural network controller. Background technique [0002] With the development of science and technology, the application prospects of ultra-high-speed permanent magnet synchronous motors in modern industry and manufacturing, aerospace and national defense and military fields are becoming more and more broad. Ultra-high-speed permanent magnet synchronous motors are light in weight, small in size, high in power density, high in reliability, and good in dynamic response performance. The development of related technologies has gradually become the trend of contemporary ultra-high-speed and ultra-precision industrial processing technology. In-depth research on the control strategy of ultra-high-speed permanent magnet synchronous motors and the development of my country's independ...

AI Technical Summary

Problems solved by technology

However, in the ultra-high-speed permanent magnet synchronous motor system, there are some serious problems in the installation of mechanical position and speed sensors, such as the difficulty in motor structure and installation and debugging, and the high cost of mechanical sensors, poor reliability, and easy damage.

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