| 摘要 |
An actuator assembly is disclosed, which includes a power unit, an actuator powered by the power unit, the power unit being configured to provide a work motion of the actuator, a motion sensor, a timing unit for measuring an immobility time of the actuator, a safety unit for selectively placing the actuator assembly into an operational state and a safety state in which the work motion of the actuator can be prevented, the safety unit being configured to prevent the operational state of the actuator assembly in case the immobility time of the actuator exceeds a predetermined process safety time. The actuator assembly can include an activation unit configured to control the power unit to provide an activation motion of the actuator in case the immobility time exceeds a predetermined activation time. |
| 主权项 |
1. An actuator assembly, comprising:
a power unit; an actuator powered by the power unit, the power unit being configured to provide a work motion of the actuator; a motion sensor configured to monitor motion of the actuator, the motion sensor including at least one motion sensor unit, the motion sensor being arranged to provide motion sensor signals in response to motion of the actuator; a timing unit for receiving the motion sensor signals and measuring an immobility time of the actuator based on the motion sensor signals, the immobility time of the actuator representing time lapsed after previous motion of the actuator; a safety unit for selectively placing the actuator assembly into an operational state in which the work motion of the actuator is allowed, and a safety state in which the work motion of the actuator is prevented, the safety unit being configured to monitor immobility time of the actuator and to prevent the operational state of the actuator assembly in case the immobility time of the actuator exceeds a predetermined process safety time; and an activation unit configured to monitor an immobility time of the actuator during an operational state of the actuator assembly, and to control the power unit to provide an activation motion of the actuator when the immobility time exceeds a predetermined activation time, the predetermined activation time being shorter than or equal to the predetermined process safety time, the activation motion being detectable by the motion sensor. |
