Current parameter calibration system and method based on standard electromagnetic valve and oscilloscope

A technology of current parameter and calibration system, applied in instruments, measuring electrical variables, measuring devices, etc., can solve problems such as damage to special measuring equipment, and achieve the effect of simple structure, simple circuit structure, and accurate calibration results

Pending Publication Date: 2020-08-14
西安航天计量测试研究所
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Problems solved by technology

[0003] However, since the current measurement module of the special test equipment uses a MOS tube, if the direct calibratio

Method used

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  • Current parameter calibration system and method based on standard electromagnetic valve and oscilloscope

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[0029] In the following, with reference to the accompanying drawings and specific embodiments, the specific embodiments of the present invention, such as the involved components, the mutual positions and connection relationships between the parts, the functions and working principles of the parts, will be further described in detail.

[0030] From figure 1 It can be seen that the current parameter calibration system based on standard solenoid valves and oscilloscopes in this embodiment mainly includes standard solenoid valves, sampling resistors, oscilloscopes, GPIB controllers, program-controlled power supplies, special calibration cables, computers, and host computer software. The special test equipment to be calibrated includes 50 sampling channels. The dedicated calibration cable is a multi-core cable, the number of cable cores corresponds to the number of sampling channels, and one of the cable cores is a common cable core.

[0031] The program-controlled power supply, the spe...

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Abstract

The invention relates to a current parameter calibration system and method, and especially relates to a current parameter calibration system and method based on a standard electromagnetic valve and anoscilloscope. Accurate calibration of special test equipment is realized, after the equipment is powered on, the special test equipment, the standard electromagnetic valve, a sampling resistor and aprogrammable power supply form a closed loop, and the current on the sampling resistor is the current of the standard electromagnetic valve. The voltage at two ends of the sampling resistor is acquired through the oscilloscope to obtain a voltage curve; and according to the ohm law, a current curve is obtained through calculation, a steady-state current value, namely a standard current, is obtained through analysis, and calibration is achieved by comparing the steady-state current value with a measured current value.

Description

technical field [0001] The invention relates to a current parameter calibration system and method, in particular to a current parameter calibration system based on a standard solenoid valve and an oscilloscope. Background technique [0002] With the development of missile and launch vehicle technology, the requirements for light weight, fast response and high reliability of the solenoid valve for engine opening and closing control are becoming more and more prominent. The projectile / arrow power system relies on the multiple opening and closing of the solenoid valve to realize multiple starts of the engine. The reliability and performance of the solenoid valve determine the success or failure of the engine and its performance level. Solenoid valves are extremely important in engines that start multiple times, especially in attitude-controlled engines. It is precisely because of the use of solenoid valves that repeated starts and pulse work of the engine are realized. In orde...

Claims

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Application Information

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IPC IPC(8): G01R35/00
CPCG01R35/005G01R35/007
Inventor 孙新新张建斌张琪
Owner 西安航天计量测试研究所
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