| 摘要 |
An active suspension system including multiple active vibration isolators (28, 30, 32) mounted between the chassis (4) and cab (6) is disclosed. Each isolator (28, 30, 32) includes a spring (44) and hydraulic actuator (68) connected between mounts (40, 42) between the cab (6) and chassis (4). The actuator (44) moves the cab (6) relative to the chassis (4) when hydraulic fluid is selectively supplied to the actuator (68) by a valve assembly (206) responsive to a valve control signal. A first isolator sensor (132) measures displacement between the mounts, and a second isolator sensor (84) measures cab movement due to disturbances in the chassis (4). The multiple isolators (28, 30, 32) are controlled by a common control circuit (200) which controls cab movement based on coordinated control signals.
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