Person support apparatus power drive system

摘要

A person support apparatus (10) comprises a lower frame (12), an upper frame (14), a drive structure (18), and a control system (20). The upper frame (14) is movably supported above the lower frame (12). The drive structure (18) is coupled to the upper frame (14) and configured to selectively engage a surface to, when activated, propel the person support apparatus along the surface. The control system (20) is configured to determine an engagement status of the drive structure (18) with the surface and trigger a response based on the engagement status.