Bicycle and motor control apparatus

A motor control apparatus for a bicycle including a crankshaft to receive a pedaling force;

• a vehicle wheel;
• a transmission including a first rotating body including at least one sprocket coupled to the crankshaft, a second rotating body including at least one sprocket coupled to the vehicle wheel, and a transmission link to transmit a driving force from the first rotating body to the second rotating body, at least one of the first rotating body or the second rotating body including a plurality of sprockets;
• a speed changer to change a speed change ratio by changing a combination of a sprocket of the first rotating body from which the transmission link transmits a driving force and a sprocket of the second rotating body to which the transmission link transmits a driving force;
• and a motor to supply the transmission link with a driving force, the motor control apparatus comprising:
• a motor controller configured or programmed to control the motor;
• wherein
• upon receiving a speed change signal indicative of a speed change operation by the speed changer, the motor controller is configured or programmed to perform a speed change response control to control the motor such that electric power in the motor remains constant.