ACTUATOR FAILURE DETECTION SYSTEMS AND METHODS

A lift device comprises a base, a retractable lift mechanism, a work platform, a linear actuator, and a lift controller. The base has a plurality of wheels. The retractable lift mechanism has a first end coupled to the base and is moveable between an extended position and a retracted position. The work platform is configured to support a load. The work platform is coupled to and supported by a second end of the retractable lift mechanism. The linear actuator is configured to selectively move the retractable lift mechanism between the extended position and the retracted position. The lift controller is configured to monitor at least one lift characteristic associated with the linear actuator and to determine whether an actuator failure has been detected based on the at least one lift characteristic associated with the linear actuator. 一种升降装置包括：基部、可伸缩升降机构、作业平台、线性致动器以及升降控制器。基部具有多个轮子。可伸缩升降机构具有被联接至基部的第一端，并且可伸缩升降机构可在伸出位置与缩回位置之间移动。作业平台被配置成支承载荷。作业平台联接至可伸缩升降机构的第二端并由该第二端支承。线性致动器被配置成使可伸缩升降机构在伸出位置与缩回位置之间选择性地移动。升降控制器被配置成监