Permanent magnet fault-tolerant motor drive controller for thrust vector control and control method

Abstract

The invention provides a permanent magnet fault-tolerant motor drive controller for thrust vector control. The controller includes a digital controller composed of a DSP and an FPGA, an isolated drivecircuit, a fault-tolerant power driver and a signal processing circuit. According to the drive controller, a Hall current sensor is used to collect the phase winding current of a motor, the positionand rotating speed signals of a motor rotor are collected through a rotary transformer, after the signals are processed by the signal processing circuit and are subjected to analog-to-digital conversion, digital signals representing a phase winding current value, a rotor position and a rotating speed are sent to the digital controller, the digital controller estimates the rotor position and the rotation speed of the motor in real time through a sensorless control method based on non-orthogonal two-phase winding high-frequency injection according to a non-fault two-phase winding current signalof the motor, which is in mutual dissimilarity redundancy with motor rotor position and speed signals obtained by a mechanical sensor, and the reliability of the motor position detection is improved.The controller has good fault isolation ability and fault-tolerant running performance and high power density, and the drive control requirements of high reliability, high power density, and high servo performance of a thrust vector control system in the aerospace field can be effectively satisfied.

Description

technical field [0001] The invention belongs to the technical field of permanent magnet fault-tolerant motor drive control, and in particular relates to a highly reliable permanent magnet fault-tolerant motor drive controller for thrust vector control. Background technique [0002] The thrust vector control servo system is an important part of the flight control system of modern aircraft such as missiles, rockets, and reusable vehicles. Its function is to control the swing angle of the nozzle and change the discharge direction of the engine jet according to the instructions of the control system. , so that the thrust of the engine produces lateral control force and control moment in the vertical direction of its main shaft, and then changes the attitude of modern aircraft in flight, so that it can fly stably according to the predetermined orbit. The performance of the thrust vector control servo system directly affects the flight quality and combat performance of modern airc...

AI Technical Summary

Problems solved by technology

However, the traditional mechanical position / speed sensor has a large volume and weight, and it is difficult to improve the reliability of motor position / speed detection through redundant backup.

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