Method for controlling pressure switch through pressure predictor

A predictor and pressure technology, applied in the direction of electric fluid pressure control, etc., can solve the problem of inability to accurately control the given pressure, achieve the effect of improving accuracy and avoiding time delay

Active Publication Date: 2014-04-02
LANZHOU INST OF PHYSICS CHINESE ACADEMY OF SPACE TECH
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Problems solved by technology

[0004] In view of this, the present invention provides a method for controlling the pressure switch by a pressure predictor, which can convert the pressure control of the controlled object into time control. Since the accuracy of time control is far greater than the accuracy of cyclic detection and adjustment of pressure, therefore Using this method solves the problem that the conventional on-off valve cannot precisely control the given pressure without changing the existing pressure automatic control hardware

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Embodiment Construction

[0022] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0023] A method for controlling a pressure switch by a pressure estimator, which is applied to a pressure control system including a high-pressure gas source, a solenoid valve, a solenoid valve drive mechanism, a pressure buffer tank, a pressure gauge and a controller, and the pressure estimator is set in the controller and delay timers such as figure 1 As shown, the method specifically includes the following steps:

[0024] Step 1, the controller fits the pressure data and the time transformation curve.

[0025] S11. The controller controls the electromagnetic drive mechanism to open the electromagnetic valve, and the high-pressure air source inflates the pressure buffer tank.

[0026] S12. The controller collects the pressure data pt detected by the pressure gauge according to the preset frequency, records the collection time t, and sends the pressure data pt and...

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Abstract

The invention discloses a method for controlling a pressure switch through a pressure predictor. A pressure predictor and a delay timer are additionally arranged in a pressure closed loop controller, pressure control on a controlled object is converted into remaining valve switching time control, the precision of the time control is greater than that of the circular pressure detection and regulation, therefore, the problem that the conventional on-off valve cannot precisely control given pressure can be solved by using the method under the condition that the existing pressure automatic control hardware is not changed.

Description

technical field [0001] The invention relates to the application of a pressure prediction method in pressure closed-loop control, and is mainly used in the design of low-cost, high-reliability, and high-accuracy pressure given control, and specifically relates to a method for controlling a pressure switch by a pressure predictor. Background technique [0002] With the development of aerospace electronic products, military electronic products and industrial application fields, pressure given control is widely used. The existing pressure closed-loop control generally adopts conventional on-off solenoid valves for control. During the control process, if the detection When the pressure reaches a certain threshold, the valve circuit is closed to realize simple pressure control. However, in actual control, the CPU undertaking control tasks often needs to process other tasks, resulting in the inability to monitor changes in pressure in real time. [0003] In the existing method for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D16/20
Inventor 胡向宇李泰国李文新于安民权昕曹靓姝
Owner LANZHOU INST OF PHYSICS CHINESE ACADEMY OF SPACE TECH
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