Design of roadheader control system based on embedded soft PLC

In order to solve problems of high development cost, large maintenance and difficult cross-platform transplantation of existing coal mine roadheader control system taking ordinary PLCs and dedicated controllers as cores, a roadheader control system based on embedded soft PLC technology was designed. The functional requirements and implementation principles of the system were analyzed. The control system architecture taking embedded soft PLC as the core was put forward. The system realizes basic logic control, full-function remote control and automatic cutting function of the roadheader through the customization of real-time operating system, transplantation of the soft PLC runtime system and the development of the drive components. The system also can real-time monitor status of the roadheader, and can realize full-function remote control through the remote control, automatic cutting and shaping of the roadway section by setting parameters such as section shape, path type, roadway height, roadway width and cutting interval. Compared with the control system with PLC and dedicated controller as the core, the roadheader control system based on embedded soft PLC can better realize unified standard and system's configuration and development of roadheader equipment, which has good cross-platform portability.The test results show that basic control function and remote control operation of the system are good, and the maximum error of automatic cutting surface boundary is less than 10 cm.