MOTOR DRIVE DEVICE AND ELECTRIC MOWING MACHINE

摘要

A motor drive device according to one aspect of the present invention includes an operation switch, a control unit, an adjusting unit, and a normal/reverse changeover switch. The control unit is configured, in a case where the operation switch is in an on state, to control a current flowing to the motor based on a control target value adjusted by the adjusting unit when a rotational direction of a motor is set to a normal direction by the normal/reverse changeover switch; and to control the current flowing to the motor based on a preset fixed reverse rotation control target value used to reversely rotate the motor, regardless of the control target value set by the adjusting unit, when the rotational direction is set to a reverse direction by the normal/reverse changeover switch.

主权项

1. An electric mowing machine comprising:
a mowing blade; a motor configured to rotationally drive the mowing blade; an electric power source configured to supply the motor with electric power used to operate the motor; an operation switch configured to be on/off-operated by a user of the electric mowing machine; a control unit configured to control a current flowing from the electric power source to the motor; an adjusting unit configured to be operated by the user and to adjust a predetermined control target value used to control the motor in either of a continuous manner and a stepwise manner; and a normal/reverse changeover switch configured to be operated by the user and to switch a rotational direction of the motor to either of a normal direction and a reverse direction, wherein the control unit is further configured, in a case where the operation switch is in an on state, to control the current flowing to the motor based on the control target value adjusted by the adjusting unit when the rotational direction is set to the normal direction by the normal/reverse changeover switch; and to control the current flowing to the motor based on a preset fixed reverse rotation control target value used to reversely rotate the motor, regardless of the control target value set by the adjusting unit, when the rotational direction is set to the reverse direction by the normal/reverse changeover switch.