Method for realizing variable dynamic characteristics of phases of electromagnetic valve through switchover for plurality of voltage sources
A technology of dynamic characteristics, voltage source, applied in the direction of valve operation/release device, valve detail, valve device, etc., can solve the problems of current lag, motion lag, etc.
Active Publication Date: 2020-10-23
ZHEJIANG UNIV OF TECH
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Problems solved by technology
Due to the obvious inductance effect of the solenoid valve coil in the high frequency state, there will be a movement hysteresis phenomenon in the opening and closing stages of the solenoid valve in the prior art, that is, under the action of voltage, the current will lag due to the inductance effect, and it will take a period of time. time to rise to the desired current value
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[0051] The present invention will be further elaborated and described below in combination with specific embodiments. The technical features of the various implementations in the present invention can be combined accordingly on the premise that there is no conflict with each other.
[0052] 1. Hardware system
[0053] Such as figure 1 Shown, its composition of optional hardware system of the present invention can comprise four variable voltage sources 1-4, a zero voltage source 5 (zero voltage source can be understood as the variable voltage source that output is 0 voltage all the time), high-speed Diverter switch 6 (including a first contact 6-0 and 5 voltage source contacts 6-1 to 6-5, the 5 voltage source contacts are respectively connected to 4 variable voltage sources and zero voltage sources), current detection Device 7, solenoid valve 8, pressure sensing system 10, displacement sensor 9, controller 11;
[0054] The coil of the solenoid valve is connected to the high-...
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The invention discloses a method for realizing the variable dynamic characteristics of the phases of an electromagnetic valve through switchover for a plurality of voltage sources, and belongs to thefield of electromagnetic valve control. The control method is divided into a plurality of the phases, and the different voltage sources are connected by controlling a high-speed switchover switch, sothat the opening-closing dynamic characteristics of the high-frequency electromagnetic valve can be adjusted. The invention further discloses an adjustment scheme for the opening-closing characteristics of the electromagnetic valve in the case of a short single-period duration time of the electromagnetic valve, and gives a control method for the slowest opening-closing characteristics and a control method for the fastest opening-closing characteristics of the electromagnetic valve. According to the control method, the different needs of a user on the opening-closing dynamic characteristics ofthe high-frequency electromagnetic valve can be met by switching over the voltage sources, so that the working range of the high-frequency electromagnetic valve is greatly expanded.
Description
technical field [0001] The invention belongs to the field of electromagnetic valve control, and in particular relates to a method for realizing variable dynamic characteristics of each stage of an electromagnetic valve by switching between multiple voltage sources. Background technique [0002] In the existing field of high-frequency solenoid valves, most technologies are dedicated to how to shorten the working cycle of the solenoid valve and increase its working frequency. Few technologies focus on how to realize the adjustable function of the dynamic characteristics of the solenoid valve opening and closing. Because the existing high-frequency solenoid valve does not have the function of adjusting the dynamic characteristics of opening and closing, its working range is limited. [0003] In the opening stage of the solenoid valve, when the current value |I|>opening current, the solenoid valve starts to open; in the closing stage of the solenoid valve, when the current v...
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IPC IPC(8): F16K31/06
CPCF16K31/0675
Inventor 钟麒李研彪谢耿王军何贤剑汪谢乐孙造诣
Owner ZHEJIANG UNIV OF TECH