| 摘要 |
A lift system for a bed frame 18 includes multiple lift mechanisms (e.g. MH, MF) at least one of which is kinematically dissimilar to the other lift mechanisms. A dedicated actuator AH, AF drives each of the multiple lift mechanisms. Each actuator includes a motor mH, mF responsive to a voltage VH, VF. During operation, the voltage supplied to each motor is regulated to effect a change in elevation of the frame 18 while concurrently effecting a prescribed change in an angular orientation of the frame.
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