| 摘要 |
PROBLEM TO BE SOLVED: To smoothly switch speed control and position control by relatively simple control, to reduce the number of part items for use, and to suppress the occurrence of positional displacement.SOLUTION: A control system 10 for releasing a parking brake comprises a speed control part (14) which outputs a target speed command value (Vcmd1) equivalent to a target speed in the case of driving an electric motor 21 at a constant rotational speed, and a position control part 13 which outputs a position control speed command value Vcmd2 which changes according to a position of an actuator. A target value decision part 15 compares magnitudes of the Vcmd1 and Vcmd2, and performs control so as to automatically select a smaller value.SELECTED DRAWING: Figure 1 |
