Motor drive control device

A motor drive control device for an electric power-assisted vehicle provided with a motor drive system and a pedal drive system each of which is provided with a one-way clutch, the device comprising:

• a first calculating part that calculates a pedal rotation conversion speed that is converted from a pedal rotation;
• and
• a second calculating part that, during a period in which a first target torque is not detected, calculates a second target torque for a motor based on the pedal rotation conversion speed, the first target torque being calculated based on a pedal torque,
• wherein the second calculating part calculates the second target torque in accordance with the first target torque during a period in which the first target torque is detected,
• wherein the second calculating part outputs the second target torque right after the first target torque is detected, the second target torque outputted by the second calculating part being gradually changed from a first value calculated based on the pedal rotation conversion speed to a second value calculated based on the pedal torque, and
• wherein the second calculating part increases the first value calculated based on the pedal rotation conversion speed to the second value calculated based on the pedal torque at a prescribed slew rate, when the first value is smaller than the second value.

A motor drive control device for an electric power-assisted vehicle provided with a motor drive system and a pedal drive system each of which is provided with a one-way clutch, the device comprising:

• a first calculating part that calculates a pedal rotation conversion speed that is converted from a pedal rotation;
• and
• a second calculating part that, during a period in which a first target torque is not detected, calculates a second target torque for a motor based on the pedal rotation conversion speed, the first target torque being calculated based on a pedal torque,
• wherein the second calculating part calculates the second target torque for the motor, based on a difference between speed of the motor and a target motor speed that is a smaller of the pedal rotation conversion speed and a vehicle speed, and
• wherein, when a difference between the target motor speed and a rotational speed of the motor, which is a value obtained by subtracting the rotational speed of the motor from the target motor speed, is a negative value, the second calculating part multiplies the difference between the target motor speed and the rotational speed of the motor by a gain that is less than 1 and that is smaller than that of when the difference between the target motor speed and the rotational speed of the motor is a positive value.