Real-time control system and switching method of two-machine rocket engine test
A real-time control system, rocket engine technology, applied in general control systems, control/regulation systems, computer control and other directions, can solve problems such as abnormal computer hardware, failure of engine ignition test tasks, etc., to achieve real-time control, reliable control tasks, Simple and reliable system
Active Publication Date: 2021-10-15
XIAN AEROSPACE PROPULSION TESTING TECHN INST
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Problems solved by technology
[0004] In order to solve the technical problem that the existing rocket engine test adopts computer control equipment, there is a risk of computer hardware abnormality, which leads to the failure of the engine ignition test task, the present invention provides a real-time control system and switching method for two-machine rocket engine test
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[0043] The content of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0044] In the control system of the rocket engine test bench, in order to complete the relevant functions of the engine test such as pyrotechnics, solenoid valves, signal detection, system testing, and ignition experiments with high reliability, the present invention adopts a dual-machine real-time backup control scheme. Such as figure 1 As shown, a dual-machine real-time control system for rocket engine test includes No. 1 computer, No. 2 computer, watchdog switching circuit, forced switch, reset switch and crystal oscillator; the key part of the control system is the watchdog switching circuit. The watchdog switching circuit adopts CPLD chip development and design, which mainly completes the real-time switching of two sets of control computers and the selection and determination of control command output. The watchdog...
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The invention provides a dual-machine real-time control system and switching method for rocket engine testing, which solves the problem that computer control equipment is used in existing rocket engine testing and there is a risk of computer hardware abnormality. The system includes No. 1 computer, No. 2 computer, watchdog logic circuit, watchdog selection circuit, forced switch, reset switch and crystal oscillator; No. 1 computer sends watchdog signal and power signal to the watchdog logic circuit; 2 The computer sends watchdog signal and power signal to the watchdog logic circuit; the forced switch sends a control power conversion signal to the watchdog logic circuit; the reset switch sends a reset pulse signal to the watchdog logic circuit; the crystal oscillator sends a watchdog signal to the watchdog The logic circuit sends the clock frequency; the watchdog logic circuit sends the computer control signal to the watchdog selection circuit; No. 1 and No. 2 computers respectively send switching output to the execution components through the watchdog selection circuit, and receive the execution components Sent digital input.
Description
technical field [0001] The invention relates to rocket engine test control technology, in particular to a rocket engine test dual-machine real-time control system and a switching method. Background technique [0002] In the rocket engine test, the requirements for the control system are very high, and abnormal conditions are not allowed in the control equipment of the test ignition process. [0003] At present, in order to improve the reliability of the control system, a single set of high-performance embedded computer control equipment is used. This control method is simple and convenient. There is a risk of an anomaly in the hardware that could lead to failure of the rocket engine ignition test mission. Contents of the invention [0004] In order to solve the technical problem that the computer control equipment used in the existing rocket engine test has the risk of computer hardware abnormality, which leads to the failure of the engine ignition test task, the present ...
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IPC IPC(8): G05B19/042
CPCG05B19/0423G05B2219/25158
Inventor 郭宁敏麻军德石德永雷倩楠陈波梁英华
Owner XIAN AEROSPACE PROPULSION TESTING TECHN INST