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

Abstract

A permanent magnet fault-tolerant motor drive controller for thrust vector control, including a digital controller composed of DSP and FPGA, an isolated drive circuit, a fault-tolerant power driver and a signal processing circuit. The drive controller uses the Hall current sensor to collect the phase winding current of the motor, and collects the position and speed signals of the motor rotor through the resolver. After signal processing circuit processing and analog-to-digital conversion, it will represent the phase winding current value, rotor position and speed The digital signal is sent to the digital controller; the digital controller estimates the rotor position and speed of the motor in real time through a sensorless control method based on high-frequency injection of non-orthogonal two-phase windings according to the non-faulty two-phase winding current signal of the motor, which is different from the mechanical The motor rotor position and speed signals obtained by the sensor are non-similar and redundant, which improves the reliability of motor position detection; the invention has good fault isolation capability and fault-tolerant operation performance, high power density, and can effectively meet the requirements of thrust vector in the aerospace field. Drive control requirements for high reliability, high power density, and high servo performance of the control system.

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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