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Pressing machine with servo motors and control method thereof

A technology of servo motor and control method, which is applied in the field of presses, can solve the problems of unification and difficult application of parallel mechanisms, and achieve the effects of reducing working noise, reducing the volume of the whole machine and manufacturing cost, and high synchronization accuracy

Inactive Publication Date: 2010-01-27
GUANGDONG METAL FORMING MACHINE WORKS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Control device for two servo motors, see appendix figure 2 , respectively adopt two sets of independent closed-loop control, since each servo motor works independently, there are unavoidable differences between them, and this difference is difficult to be unified in practice, so it is difficult to apply in parallel mechanism

Method used

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  • Pressing machine with servo motors and control method thereof
  • Pressing machine with servo motors and control method thereof
  • Pressing machine with servo motors and control method thereof

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Embodiment Construction

[0012] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0013] see image 3 , the press machine with servo motors, including the press machine and two servo motors 1 and 2 with encoders, each servo motor is connected to a branch transmission mechanism, and all branch transmission mechanisms are connected in parallel to the slider; Wherein, each servo motor adopts closed-loop control, and a synchronous ring is arranged between the servo motors to ensure the synchronization of all servo motors. The servo motor rotates 360°, the maximum speed of the servo motor is 1000RPM, and the control accuracy of the synchronous ring is ±0.05°.

[0014] During control, on the basis of the traditional closed-loop control of each servo motor, first compare the feedback signals of the encoders of each servo motor to obtain the difference value Δx, Δx=x1-x2, and then compensate to each In the PID controller of the servo motor...

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PUM

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Abstract

The invention discloses a pressing machine with servo motors and a control method thereof. The pressing machine with servo motors comprises a pressing machine and servo motors with coders., the number of the servo motors is more than two, each servo motor is connected with a branch drive mechanism, all the branch drive mechanisms are connected in parallel and then connected with a slide block, each servo motor is controlled by a closed loop, and a synchronization loop is arranged among servo motors for synchronization of all the servo motors. Control precision of the synchronization loop is 0.05 degree. The pressing machine with servo motors is provided with the synchronization loop based on the traditional closed loop control so that more than two servo motors can operate synchronously. When a big motor of the pressing machine is substituted by more than two small motors, a huge driving mechanism of the pressing machine is substituted by more than two small mechanisms, thus reducing whole volume of the pressing machine and manufacturing cost as well as work noise.

Description

technical field [0001] The invention relates to a press, in particular to a press with a servo motor and a control method thereof. Background technique [0002] The control device of a single servo motor generally adopts traditional closed-loop control, and the movement of the motor is controlled through the feedback of the angle signal of the servo motor shaft rotation, see the attached figure 1 , the control signal is input to the PID controller, the output signal is processed by the servo amplifier, and then sent to the servo motor 1 to control the movement of the servo motor 1: the output of the speed and angle, the feedback of the encoder of the servo motor 1 The signal is fed back to the PID controller to modify the output control signal. Control device for two servo motors, see appendix figure 2 , respectively using two sets of independent closed-loop control, since each servo motor works independently, there are inevitably differences between them, and this differ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B30B15/14
Inventor 陈家国李建业陈启俊王旭梅沈红立梁俊杰谢满垣郭富文胡润光
Owner GUANGDONG METAL FORMING MACHINE WORKS
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