Method for controlling travel and speed by adopting electromagnetic device and electromagnetic device

An electromagnetic device and stroke control technology, applied to electromagnets, electromagnets with armatures, circuits, etc., can solve the problems of unobtainable and uncontrollable current

Inactive Publication Date: 2011-08-10
卢小平
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, although there is a spring effect, each current cannot obtain a balanced position, so the position of the push-pull rod of this electromagnet is uncontrollable

Method used

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  • Method for controlling travel and speed by adopting electromagnetic device and electromagnetic device
  • Method for controlling travel and speed by adopting electromagnetic device and electromagnetic device
  • Method for controlling travel and speed by adopting electromagnetic device and electromagnetic device

Examples

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Embodiment Construction

[0026] see figure 1 and figure 2 , a kind of method that adopts electromagnetic device to control stroke and speed provided by the present invention, it comprises the following steps:

[0027] (1) Prepare an electromagnetic device, which device includes a support 11, a coil 12, a push-pull rod 16, a permanent magnet 14, a return spring 15, the coil 12 is wound on the support 11, and its interior is hollow, so The permanent magnet 14 is fixedly arranged on the front part of the push-pull rod 16, and the rear part of the push-pull rod 16 is provided with a shoulder and a working part; the push-pull rod 16 can move linearly forward and backward in the hollow position inside the coil 12 under the action of magnetic force; The return spring 15 is sleeved on the push-pull rod 16, its front part is in contact with the bracket 11, its rear part is in contact with the shoulder, and is fixed in the middle position by both;

[0028] (2) A control circuit is provided, and it is electri...

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PUM

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Abstract

The invention discloses a method for controlling travel and speed by adopting an electromagnetic device, which is characterized in that the method comprises the following steps: (1) preparing the electromagnetic device; (2) setting a control circuit which is electrically connected with a coil and is used for adjusting the size and the on-off state of electric currents flowing in the coil; (3) sequentially inputting initial currents to the coil so that an attractive force suffered by a permanent magnet at the farthest end of a push-and-pull rod balances a pushing force from a restoring spring which is applied to the push-and-pull rod, and taking the electric currents at the time as the value of an initial action current; (4) sequentially inputting the electric currents as multiple times ofthe value of the initial currents to the coil as required so as to lead the push-and-pull rod to be in different positions in sequence; (5) adjusting the value multiple and the on-off time of the initial currents sequentially input to the coil as required through programming by the control circuit, thereby automatically controlling the travel length and the moving speed of the electromagnetic device. The invention also discloses the electromagnetic device for realizing the method and can be widely applied to automatic control.

Description

technical field [0001] The invention relates to automatic control technology, in particular to a method and an electromagnetic device for controlling stroke and speed by using an electromagnetic device. Background technique [0002] In the prior art, the speed of opening and closing of the electromagnetic device is not controllable, usually the speed of opening and closing is very fast, because the electromagnetic coil only controls the on-off of the coil current. The position of the electromagnet push-pull rod cannot be controlled, and the position of the push-pull rod is completely determined by the mechanical structure, so usually there are only two positions, on and off, and cannot be controlled in the middle position. [0003] In the pipeline, the change of the flow rate of the medium is caused by the opening and closing of the valve, and the change of the flow rate will cause the change of the pressure, especially when the valve is opened and closed rapidly, the change...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F7/08H01F7/122
Inventor 卢小平
Owner 卢小平
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