Design of hydraulic support controller for automatic working face

For problem that hydraulic support controller was operated manually in most coal mines at present, which led to low working efficiency and poor operation safety, a hardware design scheme of hydraulic support controller for automatic working face was introduced, and realization schemes of centralized control function and self-diagnosis function of the controller were expounded. The controller, which adopts dual controlling cores and communication mode of dual RS485 buses, can monitor, process and upload information real-timely including roof pressure of hydraulic support, pushing displacement and position of shearer, and realize automatic shearer tracking, support pulling and support pushing according to technical command from terminal controller. The controller also realizes self-diagnosis function by use of communication mode of I2C bus, which can real-timely monitor and correct fault action signals of hydraulic support. The results of industrial test on the ground and fault simulation experiment verify correctness of design scheme of the controller.