| 摘要 |
A camera mounting pedestal has a rolling base (10) mounted on spaced steerable individually suspended wheel units (12). The suspension for each unit comprises a relatively soft, damped spring (26) for absorbing higher frequency wheel movements and thereby preventing such movement from being transmitted to the base, and a displacement actuator (22) in series with the spring to apply a variable force between the wheel and base. The actuators for the wheel units have a control system including gyroscope means (15) responsive to tilting of the base about any horizontal axis (15a) and accelerometer means (14) responsive to vertical movement of the base to operate the actuators so as to neutralize transmission of lower frequency movements from the wheels to the base. |
