A deviation correction control system for flexible film conveying

Abstract

The invention discloses a deviation rectification control system for flexible film conveying. The deviation rectification control system comprises a plurality of deviation rectification controllers, an upper computer, a communication module and the like, wherein each deviation rectification controller comprises a deviation rectification sensor, a signal acquiring module with double input channels, a main control module, a motor driving module and a motor feedback module respectively; the signal acquiring modules are used for acquiring analog signals output by the deviation rectification sensors, and outputting the acquired analog signals to the main control module; the main control modules are used for performing comparative calculation on the analog signals and a set value to obtain PWM (Pulse-Width Modulation) waves, outputting the PWM waves to the motor driving modules, and controlling a deviation rectification executor to work by using the PWM waves; and the motor feedback modules are used for feeding information to the main control modules to finish a closed loop control process. Moreover, a deviation rectification control mode and the internal circuit structures of the motor driving module and the signal acquiring modules serving as key components are designed. The deviation rectification control system can be suitable for deviation rectification executors of various types, and has high control accuracy; and a plurality of deviation rectification control schemes can be provided.

Description

technical field [0001] The invention belongs to the field of equipment related to coil production, and more specifically relates to a deviation correction control system for flexible film transportation. Background technique [0002] There are many kinds of roll materials, such as web film, metal foil, non-woven fabric, steel coil, flexible electronics, etc. The method of rolling materials provides convenience for storage and transportation, and at the same time improves the efficiency of material production and processing. The coil is subjected to uncontrollable force in the process of production and processing, and the phenomenon that the centerline of the width of the coil deviates from the reference centerline due to the inability to maintain a straight line can be called deviation; Uneven force will affect the deformation of the coil, which will lead to wrinkles, flanging and other phenomena; on the other hand, deviation will affect the quality of winding, and in sever...

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Problems solved by technology

[0004] However, there are still some common problems in the existing correction controllers, including: first, the controller only supports a specific motor, and cannot adapt to multiple motors of different types at the same time; second, it cannot control the deviation of multiple flexible films. Coordinated control of the controllers, which cannot be effectively compatible with the deviation correction methods such as side deviation correction, center deviation correction and line alignment; Stricter standards have also been put forward, especially for applications of flexible electronic components such as solar cell flexible substrate films, RFID tags and flexible membrane switches that require higher overall deviation correction, while the existing deviation correction controllers are not yet able to Meet the above process requirements

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