A constant tension control device and control method

Abstract

The invention discloses a constant tension control device and a control method, comprising a first guide wheel, a floating pulley assembly, a second guide wheel, a measurement monitoring mechanism, a guide wheel mounting plate, a third guide wheel, a bottom plate, a driving mechanism and an encoder One end of the substrate is attached to the winding drum, and its other end passes through the third guide wheel, the measurement and monitoring mechanism, the second guide wheel, the second guide wheel and the first guide wheel from the roll-up drum in turn. wheel; the driving mechanism is used to drive the winding drum to rotate according to the tension value of the substrate displayed by the measurement and monitoring mechanism, so as to realize the winding or unwinding of the substrate so as to keep the tension of the substrate constant . The invention adopts the motor-driven magnetic powder clutch as the actuator, and uses the floating pulley assembly for passive adjustment, so as to control the tension of the controlled target well; and adopts the method of combining feedforward control and feedback control to control the The tension is precisely controlled, which improves the control accuracy.

Description

technical field [0001] The invention belongs to the technical field of industrial control, and more specifically relates to a constant tension control device and a control method. Background technique [0002] Tension control refers to the technology of automatically controlling the tension of the processed material that is static or continuously moving between two processing equipment. Traditional tension control is generally used in papermaking, printing, packaging, textile printing and dyeing and other industries. [0003] The current tension control method on the market is aimed at the constant tension control of a double-ended fixed system with one side unwinding and one side winding. This scheme is relatively mature and can meet the basic needs of the industry. In these tension control systems, the controlled target is always in motion. Moreover, in these tension control systems, the positions of the guide wheels at both ends of the material to be processed remain un...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above defects or improvement needs of the prior art, the present invention provides a constant tension control device and control method, thereby solving the technical problem that the tension of the base material connecting two relative mobile platforms is not constant

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