| 摘要 |
PROBLEM TO BE SOLVED: To support the vehicle height adjustment by an air spring device with superior energy efficiency by using an electromagnetic actuator.SOLUTION: When an air spring control part adjusts the vehicle height by using an air spring device during the vehicle stop, an actuator control part supports the vehicle height adjustment by operating an electromagnetic actuator with the electric energy stored in an electric storage device. In this case, the actuator control part detects the air flow rate Q to be supplied/exhausted to/from the air spring device from the number of rotation of a pump, performs the PWM control of a switching element at the duty ratio according to the air flow rate Q, and performs the drive-control of an electric motor of the electromagnetic actuator. Thus, the vehicle height adjustment can be supported by the electromagnetic actuator at the similar speed to that of the vehicle height adjustment by the air spring device. As a result, the vehicle height adjustment can be rapidly executed while efficiently using the stored energy of the electric storage device. |
