Multifunctional closed-loop motor driver, driving device thereof and automatic device

Abstract

The invention discloses a multifunctional closed-loop motor driver. The driver comprises an instruction switch switching circuit, an optical coupling unit, a microprocessor, a driving unit and an encoder feedback unit; the optical coupling unit comprises a first optical coupler; the driving unit is electrically connected with the microprocessor; the encoder feedback unit is electrically connectedwith the microprocessor; the instruction switch switching circuit comprises at least one signal switching circuit; the signal switching circuit is used for carrying out matching switching of differentresistance values according to different voltage values of instruction signals; the encoder feedback unit is used for receiving position information of the motor and sending the position informationto the microprocessor; the microprocessor judges whether a motor works normally or not according to the position information. The embodiment of the invention further discloses a driving device and anautomation device. Various instruction signals with different voltage values can be connected into the motor driver at a low cost, and whether the motor works normally or not can be fed back.

Description

technical field [0001] The invention relates to the field of drivers, in particular to a multifunctional closed-loop motor driver, its driving device, and automation equipment. Background technique [0002] In recent years, closed-loop motor drivers have gained more and more applications in automation equipment in various industries. The basic principle of the closed-loop motor driver is to use the position sensor on the motor shaft to feed back the position information, and use the closed-loop control algorithm to adjust and control the motor position in real time, thereby greatly improving the performance and reliability of the motor position control. The closed-loop motor drivers described in this patent include closed-loop stepper motor drivers, hybrid servo motor drivers, stepper servo motor drivers, low-voltage servo motor drivers, AC servo motor drivers and other subcategories on the market. [0003] The closed-loop motor driver is an actuator that converts electrica...

AI Technical Summary

Problems solved by technology

[0004] However, the design of the closed-loop motor driver in the existing technology is relatively solid, and it is difficult to apply to various application scenarios at the same time.

For example, most closed-loop motor drivers cannot freely switch the adaptation to 5V / 24V pulse signal voltage, or the anti-interference performance applicable to different pulse voltages is poor

[0005] Another example is that most closed-loop motor drivers do not have the output function of alarm information and in-position information, and cannot report the operating status and fault information of the driver itself to the host computer control system in real time

As a result, it is difficult to troubleshoot faults when the entire automated mechanical system is shut down, increasing user use and maintenance costs

[0006] More importantly, this type of closed-loop motor driver lacks the brake function, which makes it difficult to use the closed-loop motor driver to lock the motor in time, which is likely to cause safety accidents and bring great inconvenience to users.

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