Abstract: In view of the existing problems of insufficient hydraulic propulsion and support monitoring parameters,unbalanced load on the cutterhead speed control motor,weak remote control and human-computer interaction capabilities,and poor posture adjustment function in the electrical system of the EBH315 type cantilever type roadheader in Baozigou Coal Mine,the electrical system of the roadheader is conducted to be optimized and transformed.Based on master-slave control and multimode communication technology,hydraulic propulsion and support module sensors are added,and the collected data are sent to the main controller through CAN bus communication;Adopting the "one main three slave" connection way and the "one drag one" control way to achieve variable frequency speed regulation control of four cutterhead motors;Humanized design for remote control and human-machine interface is conducted,achieving fault monitored and predictable,data storable and traceable;By using three-axis acceleration and three-axis gyroscope to collect posture raw data of the roadheader and sending them to the main control through Modbus TCP communication,posture calculation and correction are achieved.The results show that the transformed electrical system of the EBH315 type cantilever type roadheader operates safely and stably,improving the intelligentization level of the equipment;The monthly footage can be improved from 187 m to 401 m,an improvement of 114.44%,with significant economic benefits.