Induction type three-phase asynchronous torque motor unwinding driving circuit and method

Abstract

The invention relates to the technical field of motors, in particular to an induction type three-phase asynchronous torque motor unwinding driving circuit. The circuit comprises a power supply circuit, a synchronizing signal pulse trigger circuit, a main control circuit and three trigger angle control circuits, wherein the power supply circuit is used for rectification and voltage reduction of three-phase electricity AC380 and power supply; the synchronizing signal pulse trigger circuit as an analog differential comparator circuit comprises two comparators, and the reference voltages of the two comparators are used for being separately compared with the voltage of an AC 220 unidirectional alternating-current sine wave power supply, so that a zero pulse signal is formed; the main control circuit is used for obtaining a required trigger angle signal with the zero pulse signal as a reference signal; the three trigger angle control circuits correspond to three synchronizing signal triggercircuits respectively, and when the three trigger angle control circuits are triggered at the same time, a torque motor outputs torque. Output of the motor torque is quickly achieved at low cost, so that control over constant tension of yarn is achieved. The invention further provides an induction type three-phase asynchronous torque motor unwinding driving method.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to an induction type three-phase asynchronous torque motor unwinding drive circuit and method. Background technique [0002] Carbon fiber or glass fiber multi-axial warp knitting machines need to maintain constant yarn tension during the cutting and weaving process, so torque motors and control devices are required during the unwinding process. At present, domestic torque motors generally use torque controllers. This kind of controller needs to adjust the voltage on site and control the output torque to maintain the constant tension of the yarn. This is only suitable for a single motor to control the tension, and a yarn unwinding At least dozens of torque motors are needed on the rack, and as many as one or two hundred torque motors. It will waste a lot of labor and time to debug each one, which will greatly increase the implementation cost. [0003] In view of the above problems, b...

AI Technical Summary

Problems solved by technology

At present, domestic torque motors generally use torque controllers. This kind of controller needs to adjust the voltage on site and control the output torque to maintain the constant tension of the yarn. This is only suitable for a single motor to control the tension, and a yarn unwinding At least dozens of torque motors are needed on the rack, and as many as one or two hundred torque motors. It will waste a lot of labor and time to debug each one, which will greatly increase the implementation cost

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