Synchronous controlling method for main transmission equipment of terylene short fibre post-treatment combination machine production line

Abstract

This invention relates to polyester staple back process combination production drive device synchronous control method, which is characterized by comprising the following steps: giving speed through PROFIBUS-DP bus network to maximum power drive device by programmer controller; reading maximum power drive device through bus; giving adjacent drive device through bus network and the maximum power is the device speed times adjacent device to get adjacent drive device speed; reading adjacent drive device speed through bus network to send this speed to next adjacent drive device.

Description

technical field [0001] The invention relates to a synchronous control method for main transmission equipment of a polyester staple fiber post-processing combined machine production line, which can be widely used in papermaking, printing, etc., and belongs to the technical field of synchronous control methods for main transmission equipment of a polyester staple fiber post-processing combined machine production line. Background technique [0002] The polyester staple fiber post-processing combined machine production line is the post-process of polyester chemical fiber production. The main purpose is to draw the chemical fiber tow produced by the previous process to make it have a certain toughness and strength. The entire drafting process is shown in Figure 1. As shown, it is completed by the programmable controller PLC connecting nine inverters V1-V9 with nine main drive motors M1-M9 through the PROFIBUS-DP field bus network. The power of the nine main drive motors M1-M9 is b...

AI Technical Summary

Problems solved by technology

If the rising time of 5 seconds is set, it means that the driving device needs 5 seconds to rise from 0Hz to the rated frequency (such as 50Hz); if the falling time of 10 seconds is set, it means that the driving device needs 10 seconds to fall from the rated frequency (such as 50Hz) to 0Hz. Seconds, as shown in Figure 2, this method removes the synchronization card and saves costs, but the disadvantage is very obvious. In order to ensure the approximate synchronization of the nine transmissions, the debugger must spend a lot of time on site to set up Set the rising and falling time of the nine transmission devices, and once the product type changes and the draft ratio changes, these set times must be readjusted. Due to the instability of the motor load, even if the rising and falling time reaches a certain level, and the synchronous performance of the transmission motor cannot be guaranteed, especially in the start and stop stages of the production line, it is difficult to ensure the draft ratio, at most it is best to achieve continuous wire

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