Control system of reliable type electric actuator

The invention discloses a control system of a reliable type electric actuator. The control system comprises a main control unit, a bus card and an FSC (fire control system) which are successively connected, wherein a motor driven device, a knob plate, a torque transducer, a valve location absolute encoder and a display screen are connected with the main control unit, and the motor driven device is mutually connected with a power supply and a motor; the knob plate is provided with an operation knob and a manner knob, and the bus card is provided with a first data processing unit and a first communication interface which are mutually connected; the control system is characterized by comprising a redundance card arranged between the main control unit and the FSC, wherein the redundance card is provided with a second data processing unit and a third communication interface which are mutually connected; and the third data processing unit is mutually connected with the first data processing unit. The control system provided by the invention has the advantage of high reliability.