| 摘要 |
<p>A manual control device (406) for a machine (100) includes a handle (409) having a variable damper (412) configured to alter a stiffness thereof in response to a control signal (516). A displacement sensor (417) provides a displacement signal (508) indicative of the displacement of manual control device handle. A controller (402) is associated with the variable damper (412), the manual control device (406), the displacement sensor (417), and the actuator (404). The controller (402) determines a then present operating state of the actuator and a command (511) provided to the actuator (404) based on the displacement signal (508), and provides the control signal to stiffen the variable damper (412) such that the displacement of the handle (409) is limited to an additional displacement of the handle (409) that corresponds to a difference (507) between the then present operating state of the actuator (502) and a maximum allowable operating state of the actuator (504).</p> |
