| 摘要 |
The speed of rotation of a stairlift carriage 12 is monitored whilst traversing vertical bends A, C and/or horizontal bends (E, F fig 3) in the rail 11 and the speed of the carriage drive motor 13 is then controlled in reaction to the speed of rotation. A 3-axis gyroscope 31 is preferably used to monitor the speeds of rotation of the carriage 12 and the outputs from this gyroscope 31 may be processed by ECU 30 to provide different degrees of carriage motor 13 speed control. The speed of carriage 12 may be controlled pre-emptively with regard to the position of the carriage 12 on the rail 11. The stairlift may include a levelling motor 21 to maintain chair 16 horizontal as the carriage moves through bends. The system may maintain the speed of reference point 35 on seat 25 below 0.15m/s in any direction. |
