| 摘要 |
PROBLEM TO BE SOLVED: To provide a suspension device properly operating an electromagnetic actuator to control the behaviors of an unsprung member and a sprung member, and to efficiently store regenerative electric power. SOLUTION: An electromagnetic actuator control device 41 determines that the regenerative electric power obtained from an electric motor 26 is in a large condition when the unsprung vertical acceleration Gl detected by an unsprung vertical acceleration sensor 44 is larger than a determination reference value Go. In this condition, the control device 41 changes to increase the field-weakening gain Ky for weakening the magnetic field to extend the control range by increasing the energizing amount of d-axis component of the motor 26. The control device 41 makes the DC-DC converter 62 in the electric power unit 60 to decrease the driving voltage supplied to a motor driving circuit 47 and a capacitor 63. Hence the control range of the motor 26 is extended by increasing the gain Ky, thereby the capacitor 63 efficiently stores the regenerative electric power. COPYRIGHT: (C)2011,JPO&INPIT
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