Low-voltage servo driver based on multiple servo interfaces

Abstract

The invention discloses a low-voltage servo driver based on multiple servo interfaces. The low-voltage servo driver comprises a control chip, an algorithm chip and a power driving circuit which are connected in sequence; the control chip interacts with the outside through an external interaction interface; the algorithm chip is a chip which is loaded with a plurality of existing control algorithmsand supports parallel processing, and the algorithm chip acquires signals required by the control algorithms from the control chip through the signal interface and outputs motor motion control signals to the power driving circuit; and the power driving circuit amplifies the motor motion control signal and outputs the motor motion control signal through an external motor interface for driving themotor. Through the control chip and the algorithm chip, control and algorithm parts of an existing servo driver are separated, the algorithm chip supports parallel processing, high-frequency PWM and ahigh-frequency current loop can be output, and a motor with a small inductance value can be well driven.

Description

technical field [0001] The invention relates to a low-voltage servo driver based on a multi-servo interface, which belongs to the field of industrial control. Background technique [0002] At present, the main control chip of the mainstream servo driver usually uses a micro-control unit, also known as a single-chip microcomputer. Due to the limited performance of the micro-control unit itself, and the realization of the motor vector control algorithm requires a lot of calculations, the speed loop and position loop control algorithms must be implemented on this basis. In order to achieve the purpose of controlling the speed and position of the motor, at the same time, the main control chip needs to complete the work of detecting the running state of the driver and communicating with the external controller, resulting in the output PWM frequency and current loop frequency of the servo driver are usually lower than 15kHz, this frequency can be It can drive motors with medium an...

AI Technical Summary

Problems solved by technology

[0002] At present, the main control chip of the mainstream servo driver usually uses a micro-control unit, also known as a single-chip microcomputer. Due to the limited performance of the micro-control unit itself, and the realization of the motor vector control algorithm requires a lot of calculations, the speed loop and position loop control algorithms must be implemented on this basis. In order to achieve the purpose of controlling the speed and position of the motor, at the same time, the main control chip needs to complete the work of detecting the running state of the driver and communicating with the external controller, resulting in the output PWM frequency and current loop frequency of the servo driver are usually lower than 15kHz, this frequency can be Drives motors with medium and high inductance, but cannot drive motors with small inductance well

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