Measurement and control method based on labview

Abstract

The invention relates to a measurement and control method based on labview. The method comprises the following steps that a control computer edits communication information according to a set equipment state and sends command communication information to a valve controller; after receiving the command communication information, the valve controller sends response communication information to the control computer, opens or closes a corresponding valve, and sends the response communication information to the control computer after execution is finished; and after receiving the response communication information, the control computer makes a data collection card collect and store. In the invention, real-time calculating can be realized and an accurate control capability is possessed. Comparedwith a general control method, by using the method of the invention, 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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Problems solved by technology

[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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