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Speed control method during routing reversing transition course of multi-line cutting machine

A technology of multi-wire cutting machine and transition period, which is applied in the field of speed control during the transition period of wire reversing of multi-wire cutting machine, can solve the problems of long transition time and high motor capacity requirements, and achieve short and shorten the transition time of reversing. Transition time, the effect of small speed fluctuations

Inactive Publication Date: 2008-07-02
HUNAN YUJING MACHINE
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] It can be seen from the figure that with this speed curve, the transition time is long; because the speed value is relatively large when the acceleration is at the maximum value, the motor capacity is required to be relatively high.

Method used

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  • Speed control method during routing reversing transition course of multi-line cutting machine
  • Speed control method during routing reversing transition course of multi-line cutting machine
  • Speed control method during routing reversing transition course of multi-line cutting machine

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Embodiment Construction

[0036] In order to meet the requirements of fast control algorithm, the MP2300 motion controller of Japan Yaskawa Company (YASKAWA) is selected as the main controller. The main controller realizes the control of the main motor through the control network based on the MECHATROLINK-II field bus. The main motor and Select SGMGH-75ACA21 and SGDS-75A12 for the servo drive respectively. First, set the transition time, the number of reciprocations per minute, and the routing speed parameters. When the routing speed is 400 m / min, the transition time T 0 , then when the speed is V, the transition time is T, then

[0037] T = V 400 T 0 - - - ( 6 )

[0038] The acceleration amplitude during the transition phase is:

[0039] A = 2 π V T ...

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Abstract

The invention discloses a speed control method in the routing and reversing transition period of a multi-wire saw. The acceleration curve in the transition stage is a sine half-wave curve shown as a formula (I); wherein, the speed of a motor that runs in constant speed is V, the transition time from -V to V is T, an amplitude A is a formula (II); the change control curve in the speed transition stage is a formula (III); the acceleration is the greatest when the routing speed is zero, namely the output torque of the motor is the greatest. By the experiment results, the invention indicates that the transition speed curve is smooth, the reversing transition time is short, the speed fluctuation in the low-speed stage is small, and the requirement of a servo system for the capacity of the motor can be reduced to the greatest extent.

Description

technical field [0001] The invention relates to an acceleration optimization control method during the wire reversing period of a multi-wire cutting machine in a reciprocating wire routing mode, in particular to a speed control method during the wire reversing transition period of the multi-wire cutting machine. Background technique [0002] Each motor in the multi-wire cutting machine motion control system is a permanent magnet synchronous AC servo motor. The motor speed is determined by the frequency of the stator input voltage, and the output torque of the motor is proportional to the input current and voltage frequency ratio. In the system, the multi-wire cutting machine adopts reciprocating wire routing, and the speed of the main motor is set by the program. [0003] If the speed control curve adopts the trapezoidal curve shown in Figure 1.a), then its acceleration curve is a square wave as shown in Figure 1.b). From the perspective of the system, the output torque of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23H7/06
Inventor 戴瑜兴张义兵汤睿蒋近杨宇红
Owner HUNAN YUJING MACHINE
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