Power-driven steering engine device based on reversing of position ring and control method

Abstract

The invention provides a power-driven steering engine device based on reversing of a position ring and a control method. A signal conditioning circuit performs voltage conversion, filtering and amplitude limiting processing on a control surface drift angle given signal and sends the control surface drift angle given signal into a controller DSP through AD conversion. The DSP outputs a digital controlling signal which undergoes digital isolation and then is sent to a drive circuit to be converted into a power controlling signal. By controlling a main power circuit, a brushless DC motor is controlled to work. The brushless DC motor drives a control surface to deflect through a transmission gear set in order to follow the control surface drift angle given signal. Generating line currents of the brushless DC motor are sampled by a current sensor and fed back to the DSP. An angle sensor connected with the transmission gear set feeds back a current drift angle of the control surface in real time and sends the current drift angle to the DSP. The power-driven steering engine device based on reversing of the position ring and the control method can effectively accelerate frequency responses of the brushless DC motor and improve anti-interference performance of the system.

Description

Technical field [0001] The invention relates to a digital electric steering gear device and a control method, in particular to a brushless DC electric steering gear 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 rudder deflection angle given signal from the main control computer, and the steering gear control system will give the rudder declination signal and the rudder deflection angle. After the feedback signal is processed and adjusted by the signal, the deflection of the rudder surface is finally controlled 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 a predetermined trajectory. The electric steering gear is the front-end executive part of the aircraft. It has to directly bear air friction and resistance during high-speed flig...

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, such as deflection accuracy and response speed in a complex working environment

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