Controller of linear motor transportation system based on FPGA

Abstract

The invention relates to a controller of a linear motor transportation system based on an FPGA (Field Programmable Gate Array). The controller comprises an FPGA module, a position detection module, a current detection module and a driving module, wherein the FPGA module is respectively connected with the position detection module, the current detection module and the driving module; the position detection module is used for detecting the position of a rotor to obtain a pulse signal containing the position information of the rotor; the current detection module is used for feeding back a first driving current of the linear motor to the FPGA module; the FPGA module is used for generating a driving pulse according to an expected position, an expected speed, the pulse signal and the first driving current; and the driving module is used for generating a second driving current of the linear motor according to the driving pulse. According to the embodiment of the invention, the controller of the linear motor transportation system is designed based on the FPGA, and the low-power-consumption and high-precision control of the linear motor is realized.

Description

technical field [0001] The present disclosure relates to the field of transportation, in particular to a controller of an FPGA-based linear motor transportation system. Background technique [0002] With the continuous change of human production needs and the rapid development of society, the requirements for the precision, energy consumption and production efficiency of machine parts are getting higher and higher. The traditional rotary motor plus ball screw or gear to produce linear transmission inevitably has problems such as large mechanical friction, complex structure, low transmission efficiency, poor dynamic performance and limited control accuracy, while the linear motor is characterized by being able to directly generate Linear motion does not require any intermediate transmission device, and can directly convert electrical energy into mechanical energy, which can greatly simplify the system structure and reduce transmission loss. The linear motor transmission syst...

AI Technical Summary

Problems solved by technology

[0003] At present, the mainstream controllers used in the field of linear motor control are microcontrollers (MCU) and high-performance digital signal processors (DSP). MCU has the advantages of high integration, small size and good reliability; DSP has high processing speed, Powerful computing power, large storage, rich peripheral resources and efficient compilation environment, etc., but with the development of various industries, the motor control system centered on MCU or DSP is far from meeting the actual application needs

As far as MCU is concerned, MCU-based motor control is limited by its internal architecture and computing functions, and it cannot use advanced control theory to complete efficient control algorithms; while high-performance DSP has advantages in algorithm implementation, but its peripheral circuits are complex. , and is susceptible to external interference

Images