Hydraulic motor remote control system of towing winch and signal processing method thereof

A voltage control signal, hydraulic motor technology, applied in electrical program control, program control in sequence/logic controllers, mechanical equipment, etc., can solve the problems of remote control signal distortion, high cost, and complicated debugging, and achieve uniform pressure output. , The effect of stable output pressure and strong anti-interference ability

Active Publication Date: 2010-10-13
WUHAN MARINE MACHINERY PLANT +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the defects and problems existing in the prior art that the remote control signal is seriously distorted, the output pressure of the hydraulic motor is unstable, the control method is complicated, the cost is high, an...

Method used

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  • Hydraulic motor remote control system of towing winch and signal processing method thereof
  • Hydraulic motor remote control system of towing winch and signal processing method thereof
  • Hydraulic motor remote control system of towing winch and signal processing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0052] Take the operation of unloading the cable machine in the cab as an example to illustrate:

[0053] The first step: first establish the basic model of the signal processing method, that is, establish the X-Y axis coordinate system, where X is the cable machine output voltage control signal output by the handle, Y is the PLC output voltage control signal, and the range of X is 2.5-5V , the range of Y is 0-5V;

[0054] Step two: see image 3 , conduct on-site tests and inspections, record the test data, and draw the X-Y curve on the above-mentioned X-Y axis coordinate system, then segment the X-Y curve, take six points, and divide it into five segments;

[0055] The third step: referring to Table 1, linearize each section of the curve after segmentation, that is, first establish the basic mathematical relationship between X and Y, that is, Y=kX+b, where k=(Y n -Y n-1 ) / (X n -X n-1 ), where b is the correction value, and k is the slope, then calculate the k value and b...

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Abstract

The invention discloses a hydraulic motor remote control system of a towing winch, which comprises a remote control handle, a programmable logic controller (PLC) signal processing unit, a proportional valve controller, an electromagnetic pressure proportional valve and a hydraulic motor which are sequentially connected, wherein the electromagnetic pressure proportional valve comprises a take-up electromagnetic pressure proportional valve and a releasing electromagnetic pressure proportional valve which are connected in parallel; a signal linear processing method adopted by the PLC processing unit is a segmented linear processing method; output signals of the proportional valve controller are pulse-width modulation (PWM) signals; and the control current of the electromagnetic pressure proportional valve is 140 to 400 mA. The hydraulic motor remote control system has the characteristics of no remote control signal distortion, relatively more stable hydraulic motor output pressure, simple control method, relatively lower cost and convenient debugging.

Description

technical field [0001] The invention relates to a hydraulic motor control system of a cable winch, in particular to a remote control system of a hydraulic motor of a drag winch and a signal processing method thereof. Background technique [0002] As a reliable transmission device, hydraulic motor has been widely used in the industrial field. There are two control methods for hydraulic motors, namely local control and remote control. [0003] Local control: Controlled by the joystick installed on the motor, the joystick can be operated clockwise and counterclockwise to make the motor rotate forward and reverse, and change the flow of the motor at the same time, and the flow of the motor is related to the off-center angle of the joystick. [0004] Remote control: It consists of a remote control unit and an electromagnetic pressure proportional valve. The remote control system sends a control command to the electromagnetic pressure proportional valve, so that the electromagnet...

Claims

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Application Information

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IPC IPC(8): G05B19/05G01B7/00F16K31/02
Inventor 赵丽雄潘晓陈诺王征
Owner WUHAN MARINE MACHINERY PLANT
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