Interconnecting error correction type triple-modular redundancy control system and arbitration method
A technology of control system and triple-mode redundancy, which is applied in general control system, control/regulation system, adaptive control, etc., can solve the problems of channel function failure, affecting the reliability of redundant control system, etc., and achieve the goal of improving reliability Effect
Active Publication Date: 2013-03-06
NO 719 RES INST CHINA SHIPBUILDING IND
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The internal structure of each independent channel adopts the form of series connection. If any unit in any channel fails, the function of the channel will be invalidated, and the wrong information will be output to the arbitration unit. Only the other two independent channels can only be completely correct. information, the arbitration unit can shield the received error information and get the final correct information output, thus affecting the reliability of the entire redundant control system
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[0033] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0034] see figure 1 As shown, the embodiment of the present invention provides an interconnected error correction type triple-mode redundant control system, which includes a first channel, a second channel, and a third channel that are independent of each other, and the first channel includes a first input unit connected in sequence, The first interconnected error correction unit, the first logical judgment unit and the first output unit, the second channel includes the second input unit, the second interconnected error correction unit, the second logical judgment unit and the second output unit connected in sequence, the second The three channels include a third input unit, a third interconnected error correction unit, a third logical judgment unit, and a third output unit connected in sequence, and the first output unit, the second ...
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The invention discloses an interconnecting error correction type triple-modular redundancy control system and an arbitration method, and relates to the field of redundancy control systems. The control system comprises three channels. Each channel comprises an input unit, an interconnecting error correction unit, a logic judgment unit and an output unit, which are sequentially connected. Each interconnecting error correction unit comprises two universal asynchronous receiver transmitter (UART) interfaces which are connected with one UART interface in each of the other two interconnecting error correction unit respectively. Each interconnecting error correction unit obtains all input information, performs arbitration, transmits an arbitration result to the logic judgment unit of the corresponding channel, and transmits output requirements to the output unit of the corresponding channel. The three output units transmit output information to an arbitration unit, and the arbitration unit outputs final information. A failure of the input unit in any channel can be shielded, and an accurate result can be output when the input unit of any channel fails, so that the reliability of the channels is improved, and the reliability of the whole redundancy control system is improved.
Description
technical field [0001] The invention relates to the field of redundant control systems, in particular to an interconnected error correction type triple-mode redundant control system and an arbitration method. Background technique [0002] In the field of industrial control with high security requirements, redundancy technology is one of the means widely used to improve the reliability and security of the control system. A redundant control system trades the redundancy of information, structure, function, and time for the correctness of the system output when certain faults occur. The most commonly used redundancy technology is the N-mode redundant control scheme including N channels, where N is a positive integer, all input information is input into N mutually independent channels at the same time, and each channel is independently judged, and all channels output signals to the arbitration unit (or conformity unit), the final output result is obtained by the arbitration uni...
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IPC IPC(8): G05B13/04
Inventor 江炜潘艳张晓辉邹海孙建华徐斌汪伟
Owner NO 719 RES INST CHINA SHIPBUILDING IND