A control system and method of a three-position electric mechanism

A technology of electric mechanism and control system, which is applied in the direction of rotation control of DC motors, etc.

Active Publication Date: 2019-01-11
BEIJING POWER MACHINERY INST
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to reduce the research and development cost and complexity of the existing technology, and provide a control system and method for a three-position electric mechanism, which is used to realize the three-position control of the mechanism, which can effectively reduce the cost and cost of the system. the complexity

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  • A control system and method of a three-position electric mechanism
  • A control system and method of a three-position electric mechanism

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Embodiment Construction

[0026] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. In the following description, for purposes of explanation and not limitation, specific details are set forth in order to provide a thorough understanding of the invention.

[0027] figure 1 The schematic diagram of the three-position mechanism control system provided by the embodiment of the present invention.

[0028] Such as figure 1 As shown, the three-position electric mechanism control system provided by an embodiment of the present invention includes:

[0029] The control circuit is used to output the control voltage of the motor and control the rotation direction of the motor;

[0030] The micro switch is used to control the power supply of the motor to be turned on and off, and to indicate the position signal;

[0031] DC motor, with two positive and negative excitation windings inside, to realize the forward and reverse control of t...

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Abstract

The invention provides a control system and control method of a three-position electric mechanism. The control method adopts a pure hardware mode to realize the three-position control of the mechanism. The control system comprises a control circuit, a microswitch and a DC motor. The motor output shaft drives the mechanism to rotate in the range of 0-90DEG-180DEG. It is required that the six working modes of 0-90DEG, 90 DEG-180 DEG, 0-180 DEG, 90 DEG-0, 180 DEG-90 DEG and 180 DEG-0 DEG can rotate normally. When 28V_0 power is supplied to the system, the electric mechanism shall be rotated fromany current position to 0 DEG position, from 0 DEG or 180 DEG position to 90 DEG position when the system is powered on 28V_90, and from any current position to 180 DEG position when the system is powered on 28V_180. Thus, the invention not only realizes the three-position control of the mechanism, but also adopts the pure hardware control method, avoiding the design and management cost brought bythe software control, realizes the three-position control of the mechanism by the method, and can effectively reduce the cost and complexity of the system.

Description

technical field [0001] The invention relates to the technical field of motor control, in particular to a control system and method for a three-position electric mechanism. Background technique [0002] With the development of automation control technology, electric actuators are widely used in valve bodies, and electric actuators gradually replace manual operations to complete the switch control of valves. In some dangerous occasions and some special valves require emergency opening or closing under special circumstances, the use of electric actuators can effectively reduce personal injuries and property losses. [0003] Usually a simple electric mechanism is used to drive the valve to the fully open or fully closed position, which can be realized by using a position sensor such as a potentiometer combined with the positive and negative rotation of the DC brush motor. However, in some specific systems, there are three positions of the valve body. Control needs to drive the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P7/03
CPCH02P7/03
Inventor 杨建成于宗洋张建黄居锋王康乐
Owner BEIJING POWER MACHINERY INST
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