A measurement and control method based on labview
A measurement and control method and valve controller technology, applied in the field of measurement and control systems in the aerospace field, can solve the problems of wasting time and manpower, failure of automatic emergency stop, and test performance indicators that cannot be calculated in real time, so as to reduce system complexity and cost, The effect of simple structure
Active Publication Date: 2020-11-24
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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[0005] The other is that the control computer alone realizes the control work, and the additional data acquisition instrument performs the test work. Since the performance evaluation index of the hydrazine thruster thermal test run test is closely combined with the control sequence, this mode can only get the original data , the test performance index cannot be calculated in real time, and additional manual follow-up calculation is required, which wastes a lot of time and manpower, and it cannot automatically stop in an emergency when an abnormal test state occurs
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[0062] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0063] A measurement and control device based on labview, comprising: a control computer, a data acquisition card, and a valve controller; the control computer is connected to the data acquisition card through a PCI slot, and the control computer is connected to the valve controller through a data line; the control computer is installed with Labview adopts the labview programming control program, and realizes the control of each valve through the set command communication information format.
[0064] The valve controller includes: the RX pin of the 9-pin D-shaped connector is connected to the RS end of the serial port converter, the TX pin of the 9-pin D-shaped connector is connected to the TX end of the serial port converter; the C1+ end and C1- end of the serial port converter are connected with 104 capacitors , the C2+ and C2- terminals of ...
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The invention relates to a measurement and control method based on labview, which includes: the control computer edits the communication information according to the set equipment state, and sends the command communication information to the valve controller; the valve controller sends the response communication information to the control computer after receiving the command communication information, And open or close the corresponding valve, and send the response communication information to the control computer after execution; after the control computer receives the response communication information, control the data acquisition card to collect and store it. The invention not only has real-time calculation, but also has precise control ability. Compared with the general control method, the system complexity and cost are greatly reduced.
Description
technical field [0001] The invention relates to a measurement and control system in the field of aerospace, to be precise, a measurement and control method based on time sequence synchronous master-slave control. Background technique [0002] In the field of aerospace, hydrazine thrusters are widely used in the attitude and orbit control of satellites, launch vehicles, spaceships and other aircraft. With the new requirements of returnable spacecraft, recoverable rockets and high precision requirements, the requirements for hydrazine propulsion devices are becoming more and more stringent. The ground thermal test performance test of the hydrazine thruster determines the actual performance of the hydrazine thruster in operation. The core indicators of the ground thermal test of the hydrazine thruster include the start-up response time and the stop response time, etc., and the control sequence is a necessary parameter for calculating the core indicators. [0003] At present, ...
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IPC IPC(8): G05B23/02
CPCG05B23/0256G05B2219/24065
Inventor 刘加成李涛王晓东王智刚于炳军张玉卓
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI