System and method for testing current curve of electromagnetic valve
A current curve and test system technology, applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc., can solve problems such as jitter interference, current curve distortion, etc., achieve the effects of eliminating jitter, increasing the amplitude of sampling waveforms, and improving the signal-to-noise ratio Effect
Pending Publication Date: 2020-01-21
西安航天计量测试研究所
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Problems solved by technology
[0004] In order to solve the problem that the jitter interference existing at the moment of opening and closing of the mechanical switch causes the distortion of the collected current curve, the present invention designs a solenoid valve current curve testing system and method based on optocouplers, MOS tubes and testing equipment. and switching times were tested
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[0028] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0029] Such as figure 2 As shown, the electromagnetic valve current curve test system based on optocoupler and MOS tube 14 in this embodiment mainly includes optocoupler device 15, MOS tube 14, regulated power supply, fast recovery diode, oscilloscope 12, signal generator 11 and resistance components Wait. In the figure, pin 1 of the optocoupler device 15 is the anode 1 of the optocoupler input light-emitting diode, pin 2 is the cathode 2 of the optocoupler input light-emitting diode, pin 3 is the collector 3 of the phototransistor inside the optocoupler, and pin 4 is the optocoupler Emitter 4 of the internal phototransistor. in prior art figure 1 On the basis of the above, the signal generator 11, the optocoupler and the MOS tube 14 are used to replace the mechanical switch to solve the problem of jitter interference existing at the mome...
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The invention relates to a system for testing the current curve of an electromagnetic valve, in particular to a system and a method for testing the current curve of the electromagnetic valve. The problem that a collected current curve is distorted due to jitter interference existing in the opening and closing moment of a mechanical switch is solved. The test system comprises a voltage stabilizingpower supply, an MOS tube, a sampling resistor, a diode, an oscilloscope, a signal generator and an optocoupler; the mechanical switch is replaced by utilizing the signal generator, the optocoupler and MOS light, instant shaking of the switch is eliminated, the dynamic current curve of the electromagnetic valve can be visually observed, and an expected effect is achieved; and Labview software is used for controlling the signal generator to output a square wave signal, and the opening and closing of the electromagnetic valve are triggered and controlled, so that the signal triggering is more flexible. The circuit is simple, practicable and effective in structure, and has certain popularization values.
Description
technical field [0001] The invention relates to a solenoid valve current curve testing system, in particular to a solenoid valve current curve testing system and method based on an optocoupler and a MOS tube. 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. [0003] ...
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IPC IPC(8): G01R31/00
CPCG01R31/00
Inventor孙新新
Owner西安航天计量测试研究所