Rocket engine test dual-computer real-time control system and switching method
A real-time control system and rocket engine technology, applied in general control systems, control/regulation systems, computer control, etc., can solve problems such as failure of engine ignition test tasks, abnormal computer hardware, etc., to achieve control tasks, reliable control tasks, The system is simple and reliable
Active Publication Date: 2021-03-12
XIAN AEROSPACE PROPULSION TESTING TECHN INST
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[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 rocket engine test dual-computer real-time control system and a switching method, and solves the problem that computer hardware abnormality risks exist due to the fact that computer control equipment is adopted in an existing rocket engine test. The system comprises a first computer, a second computer, a watchdog logic circuit, a watchdog selection circuit, a forced switch, a reset switch and a crystal oscillator. The first computer sends a watchdog signal and a power supply signal to the watchdog logic circuit; the second computer sends a watchdog signal and a power supply signal to the watchdog logic circuit; the forced switch sends a control right forced conversion signal to the watchdog logic circuit; the reset switch sends a reset pulse signal to the watchdoglogic circuit; the crystal oscillator sends clock frequency to the watchdog logic circuit; the watchdog logic circuit sends a computer control right signal to the watchdog selection circuit; and the first computer and the second computer send switching value output to an execution component through the watchdog selection circuit and receive switching value input sent by the execution component.
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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Login to View More 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