A four-quadrant control device and method for electric steering gear

Abstract

The invention provides a four-quadrant control device and a four-quadrant control method for an electric steering engine. A signal conditioning circuit is used for performing voltage transformation, filtering, clipping processing on a given signal of the deflection angle of a control plane and then sending the given signal into a controller DSP (Digital Signal Processor) through AD (Analog-Digital) conversion; the DSP is used for outputting a digital control signal; after digital isolation, the digital control signal is sent to a driving circuit and converted into a success rate control signal; and a main power circuit is controlled so as to control a brushless direct-current motor to work; the brushless direct-current motor drives the control plane to derivate so as to follow the given signal of the deflection angle of the control plane through a transmission gear set; the bus bar current of the brushless direct-current motor is sampled through a current sensor and then fed back to the DSP, and an angle sensor connected with the transmission gear set feeds back the current deflection angle of the control plane in real time which is sent to the DSP. According to the four-quadrant control device and the four-quadrant control method for the electric steering engine, the frequency response of a brushless direct-current electric steering engine is effectively quickened, and the antijamming capacity of the system is improved.

Description

technical field [0001] The invention relates to a control device and a control method for a digital electric steering gear, in particular to a brushless DC electric steering gear with fast dynamic response for aircraft. Background technique [0002] The electric steering gear is a high-precision position servo system. The working principle of the steering gear is to receive the given signal of the rudder surface deflection angle given by the main control computer. After the feedback signal is processed and program adjusted, the deflection of the rudder surface is manipulated by outputting instructions, thereby changing the flight posture or flight trajectory of the aircraft, and finally ensuring that the aircraft flies in the air according to the predetermined trajectory. The electric steering gear is the front-end executive part of the aircraft. During high-speed flight, it must directly bear air friction and resistance, and the working environment is harsh. Under the premi...

AI Technical Summary

Problems solved by technology

The invention patent "A Digital Steering Gear Controller" with the publication number CN102854814A proposes a digital electric steering gear scheme based on the DSP module, but it only proposes the overall structural scheme of the system. For each functional module of the system and specific The control method is not given in detail

The article "A Permanent Magnet Brushless DC Electric Steering Gear Four-Quadrant Control" published in "Acta Electrotechnical Society" provides an improved electric steering gear control scheme based on current hysteresis control on the basis of PID, but this improvement It is aimed at the suppression of system output torque ripple, and it does not help the most important performance of the electric steering gear, the fast response speed in a complex working environment.

Images