Electric moped, transmission device and control method

The invention discloses an electric moped. The electric moped comprises a body, a motor, a torsion sensor and a controller. The motor is operated in an operation period. The torsion sensor is used for outputting a plurality of torsion signals corresponding to treading force. The controller is coupled to the motor and the torque sensor. The controller is used for receiving the torsion signals from the torsion sensor, judging to obtain wave crests and wave troughs adjacent to the wave crests in the torsion signals, calculating a treading period between the wave crests and the wave troughs adjacent to the wave crests in the torsion signals, and when the treading period and the running period do not accord with a preset proportion, an error signal associated with the torque sensor is generated. Therefore, a user can accurately master the functional state of the electric moped, and the safety degree of the electric moped in the step is improved. 电动助力车包含本体、马达、扭力感测器以及控制器。马达操作于一运转周期。扭力感测器用以输出对应踩踏力的多个扭力信号。控制器耦接马达及扭力感测