摘要:
Under electric control of a motor by a CPU, before the rotation angle of a rotary knob reaches a predetermined angle (20°, 40°, 60°, . . . 360°), a torque in the same direction as a rotational direction is provided from the motor to the rotary knob, and the torque is decreased from a maximum value to zero. When the rotation angle of the rotary knob reaches a predetermined angle, a torque product is provided to the rotary knob depending upon an angular velocity of the rotary knob. After the rotation angle of the rotary knob exceeds a predetermined rotation angle, a torque in the reverse direction to a rotational direction is provided to the rotary knob, and the torque is increased from zero to a maximum value.
摘要:
An on-vehicle electric unit has a microcomputer formed of a RAM which stores information indicating an operating condition of the on-vehicle electric unit and momentary-power-supply-interruption check information, a ROM which stores an operation program of the microcomputer, an initial value for the information indicating the operating condition, and the momentary-power-supply-interruption check information, and a CPU which controls the on-vehicle electric unit according to the information indicating the operating condition and the operation program, and a reset circuit which resets the microcomputer if a voltage of the on-vehicle power supply is reduced. The microcomputer checks whether the momentary-power-supply-interruption check information stored in the RAM remains when it is reset. When the momentary-power-supply-interruption check information is detected, the microcomputer determines that a momentary interruption of the on-vehicle power supply has occurred and restarts controlling the on-vehicle electric unit. If the momentary-power-supply-interruption check information is not detected, the microcomputer determines that not a momentary interruption of the on-vehicle power supply but a voltage drop lasting for a time period exceeding that of a momentary interruption has occurred, initializes the RAM, and then restarts controlling the on-vehicle electric unit.