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Dual-redundancy flow regulating mechanism control system and redundancy switching method

A technology of flow regulation and control system, which is applied in the field of servo control and can solve the problems of low reliability

Pending Publication Date: 2021-12-07
XIAN MICROELECTRONICS TECH INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the disadvantages of the above-mentioned prior art that the controller of the engine flow regulating mechanism does not take redundant design measures resulting in low reliability, and provides a dual-redundant flow regulating mechanism controller and a method for switching the remaining degrees

Method used

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  • Dual-redundancy flow regulating mechanism control system and redundancy switching method
  • Dual-redundancy flow regulating mechanism control system and redundancy switching method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A dual-redundancy flow regulating mechanism control system, including a first control unit, a second control unit and a drive unit, the first control unit and the second control unit have the same structure;

[0047] The first control unit includes a signal acquisition module, a data processing module, a fault detection module and a data switch;

[0048] The signal acquisition module is used to acquire the position, current and voltage signals of the flow regulating mechanism;

[0049] The data processing module is used to identify the logic level of the HALL signal of the motor in the flow regulating mechanism;

[0050]The fault detection module interacts with the signal acquisition module and the data processing module respectively, and performs fault detection based on the position, current, voltage signal of the flow regulating mechanism and the logic level of the motor HALL signal, and performs motor commutation based on the fault detection result;

[0051] The da...

Embodiment 2

[0055] Except for the following content, all the other contents are the same as in Example 1.

[0056] The control system of the double-redundant flow regulating mechanism also includes two power supply units, which have the same structure; each power supply unit includes a surge suppression module, a DC / DC circuit and a linear power supply module that are electrically connected in sequence. The power supply unit is connected to the external power supply, including two power supply circuits, the composition of the two power supply circuits is the same; the two power supply circuits work in a double-redundant parallel working mode; each power supply circuit includes a surge suppression filter module that is electrically connected in sequence , a DC / DC conversion circuit and an LDO power supply module; the surge suppression filter module is electrically connected to an external power supply. The control circuit unit includes four secondary power supplies, namely +5V secondary po...

Embodiment 3

[0058] see figure 1 , a dual-redundancy flow regulating mechanism control system, which is composed of three major circuits: power supply, control and power drive. Among them, the power supply circuit adopts a dual-redundancy parallel working mode, except that the +11V secondary power supply uses two outputs, and the remaining +5V, +12V and +15V secondary power supplies are output in parallel with diodes; the control circuit adopts a dual-redundancy thermal In backup working mode, under normal circumstances, only the main channel works, and the backup channel is in the hot backup state; the power drive circuit adopts a single-redundancy design, and can only receive the motor control signal from one of the main channel or the backup channel. Two CAN buses are provided for control, and the main channel or backup channel can be freely selected for work. Each data processing unit (processor) has only one CAN bus, and the two data processing units are independent of each other wit...

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Abstract

The invention discloses a dual-redundancy flow regulating mechanism control system and a redundancy switching method, and belongs to the technical field of servo control. The system comprises two control units with the same structure, and further comprises a driving unit. The two control units are designed, a signal acquisition module is used for acquiring position, current and voltage signals of a flow adjusting mechanism, then processing acquired data, carrying out fault detection, transmitting the data after fault detection to the driving unit, and the driving unit performs power driving on the flow adjusting mechanism. According to the dual-redundancy flow regulating mechanism control system provided by the invention, a working channel can be appointed by a bus control unit; an instruction generator tripping function is realized; the function of automatically switching main and standby channels under the fault condition is achieved; a local redundancy design is adopted, so that the reliability of a flow controller is improved by 40% compared with that of a previous single-redundancy flow controller.

Description

technical field [0001] The invention belongs to the technical field of servo control, and relates to a dual-redundancy flow regulating mechanism control system and a redundancy switching method. Background technique [0002] Flow regulating mechanism controller is an important part of engine flow regulation, and its reliability directly affects the working reliability of the engine. [0003] The internal hardware circuit of the existing engine flow regulating mechanism controller does not adopt a redundant design, and the power supply, control, commutation, isolation, power drive, communication, signal acquisition and other circuits are all designed with single redundancy, so as long as any one of the controllers If the circuit fails, there will be a single point of failure, which will cause the flow controller to fail and cause the engine to work abnormally. [0004] That is, the existing engine flow regulating mechanism controller does not adopt redundant design measures,...

Claims

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Application Information

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IPC IPC(8): G05B9/03G05D7/06
CPCG05B9/03G05D7/0623
Inventor 赵亚妮王科平田晓洁
Owner XIAN MICROELECTRONICS TECH INST
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