Control device of digital electric steering engine and control method

A technology of electric steering gear and control device, which is applied in the directions of aircraft transmission, aircraft power device, aircraft power transmission, etc., can solve the problem that each functional module and specific control method are not given in detail, and achieve the improvement of rapidity and flexibility. performance, improve steady-state accuracy, and facilitate control

Inactive Publication Date: 2013-08-07
NORTHWESTERN POLYTECHNICAL UNIV
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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 Fou

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  • Control device of digital electric steering engine and control method
  • Control device of digital electric steering engine and control method

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0025] The technical solution of the present invention includes: controller-DSP, digital isolation circuit, drive circuit, main power circuit, brushless DC motor (BLDCM), transmission gear set, rudder surface, current sensor, position sensor, 422 communication circuit. The rudder deflection angle given signal is sent in the form of an analog signal, and the signal conditioning circuit performs voltage conversion, filtering, and limiting processing on it and then sends it to the controller DSP through AD conversion. The DSP adjusts through the control strategy and outputs 6 digital channels. Control signal, the digital control signal is digitally isolated and then sent to the drive circuit to convert it into a power control signal. The power control signal controls the operation of the brushless DC motor (BLDCM) by controlling the MOSFET in the main power...

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Abstract

The invention provides a control device of a digital electric steering engine and a control method. The control method comprises the steps that a steering surface deflection angle given signal is subjected to voltage transformation, filtering and amplitude limiting processing by a signal conditioning circuit, and sent to a controller DSP (Digital Signal Processor) by AD (Analogue-to-Digital) conversion; the DSP outputs a digital control signal; the digital control signal is subjected to digital isolation and then sent to a driving circuit to be converted into a power control signal; a brushless DC (Direct Current) motor is controlled to operate by controlling a main power circuit, and drives a steering surface to deflect through a transmission gear set to follow the steering surface deflection angle given signal; the bus current of the brushless DC motor is sampled by a current sensor and fed back to the DSP; an angle sensor connected with the transmission gear set feeds back a current deflection angle of the steering surface in real time and sends the current deflection angle to the DPS. The control device and the control method effectively accelerate frequency response of a brushless DC electric steering engine, and improve the interference immunity of a system.

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...

Claims

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Application Information

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IPC IPC(8): B64C13/50
Inventor 李兵强李志林辉戴志勇孙欣欣
Owner NORTHWESTERN POLYTECHNICAL UNIV
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