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Dual-redundancy steering engine controller

A steering gear controller and dual-redundancy technology, which is applied in the field of aviation flight control, can solve the problems of reducing the anti-interference performance of the controller and random errors, and achieve improved control accuracy and anti-interference ability, enhanced versatility, and simple control Effect

Inactive Publication Date: 2010-08-11
CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the command signal of the conventional steering gear controller adopts analog input, which improves the real-time performance of the command but reduces the anti-interference performance of the controller, and easily introduces random errors

Method used

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  • Dual-redundancy steering engine controller
  • Dual-redundancy steering engine controller
  • Dual-redundancy steering engine controller

Examples

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Embodiment Construction

[0018] see figure 1 , Dual redundancy steering gear controller, including central control unit, photoelectric isolation unit, power drive unit, failover unit, steering gear signal conditioning unit, steering gear and serial communication interface unit. The central control unit is a DSP chip digital signal processor with a Harvard structure that separates the program and data internally. The eight-way PWM signals output by the output port are separated by the photoelectric isolation unit and divided into PWMA1~4 and PWMA5~8 in groups of four. The two groups are respectively input to the first set of power drive units and the second set of power drive units, which are composed of power drive chips and H-bridge circuits. The drive power of the two sets of power drive units and the voltage output to the steering gear M are switched by the failover unit controlled by the digital signal processor, and are mutually backed up. A steering gear signal conditioning unit composed of a s...

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Abstract

The invention discloses a dual-redundancy steering engine controller, which belongs to the technical field of aviation flight control. A central control unit is a DSP chip digital signal processor, and PWM signals output by a plurality of paths of output ports of the central control unit are isolated by a photoelectric isolation unit, and then are divided into two groups and are input into a first set of power drive unit and a second set of power drive unit which consist of power drive chips and H bridge circuits and have same circuits respectively; drive power supplies of the two sets of power drive units and the voltage output to a steering engine (M) are switched by a fault switching unit controlled by the digital signal processor; a steering engine signal conditioning unit consisting of a steering engine current conditioning unit and a steering engine position conditioning unit is connected between the steering engine and an input end of the digital signal processor; and an RS422 serial port communication interface circuit unit is arranged between the digital signal processor and a host computer. The dual-redundancy steering engine controller has the advantages of simple structure, high control accuracy, good system stability, strong interference resistance, high reliability, low development cost and the like.

Description

technical field [0001] The invention relates to a dual-redundancy steering gear controller, which is mainly used in the attitude control system of aviation aircraft and belongs to the technical field of aviation flight control. Background technique [0002] As an important part of the aircraft, the performance of the steering gear directly affects the flight safety and flight quality of the aircraft. In order to improve the safety of the aircraft, the steering gear must be designed with redundancy, the most common of which is the double redundancy design. The dual-redundancy design of the steering gear is usually divided into the dual-redundancy design of the actuator and the dual-redundancy design of the steering gear controller. The present invention relates to the dual-redundancy design of the steering gear controller. Conventional dual-redundancy steering gear controllers use two sets of completely independent control circuits, which increases system cost and system com...

Claims

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Application Information

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IPC IPC(8): G05D1/08
Inventor 郭绪猛苏润荣海春李劲松倪勇
Owner CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
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