Stepping motor control system and stepping motor control method

Abstract

The invention provides a stepping motor control system comprising a sampling unit, a computing unit, an inquiring unit and an output unit, wherein the sampling unit is used for periodically obtaining the sampling value of the current of a stepping motor; the computing unit is used for computing the error value and the error change value of the current period; the inquiring unit is used for inquiring parameter rule lists according to the error value and the error change value and adjusting the proportion parameters and integration parameters of the current period; and the output unit is used for computing and outputting the control value of the stepping motor according to the adjusted proportion parameters and integration parameters. The invention correspondingly provides a stepping motor control method. According to the stepping motor control system and the stepping motor control method provided by the invention, the proportion parameters and the integration parameters of the current period can be adjusted correspondingly according to the error value and the error change value of the current period, so that the proportion parameters and the integration parameters can be adjusted in real time, the ideal performances in design can be kept, the problems of small low-speed vibration force and high-speed force applying can be solved, so that the demands of the full-speed operation are met.

Description

Technical field [0001] The invention relates to a stepping motor, in particular to a stepping motor control method and system. Background technique [0002] Stepping motors include two-phase stepping motors, three-phase stepping motors and five-phase stepping motors. They are usually controlled by digital signals to complete accurate position control. They have been widely used in robotic arms, stage lighting, CNC machine tools, and laser cutting machines. , LED potting equipment and other industries. In the traditional stepper motor digital signal control method, the current signal of each phase of the stepper motor is a digital signal after analog-to-digital conversion, the signal for controlling the stepper motor is a digital signal, and the calculation and processing of the input and output signals use digital PID (Proportional, integral, derivative) control algorithm is realized. The existing digital PID adjustment algorithm is described in the following formula (1) and fo...

AI Technical Summary

Problems solved by technology

[0007] In view of this, a stepper motor control system and method are provided, which can overcome the influence of non-linear factors such as stepper motor characteristics and loads without changing the hardware configuration, and solve the problems of low-speed vibration and high-speed output caused by traditional digital PID control algorithms. and other issues to meet the needs of full-speed work

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