| 摘要 |
The invention relates to a control device for a hydraulic lift. According to the invention, the control device comprises a position regulator (42) which produces a regulating signal on the basis of a actual position value Posact generated by a position generator (41) and a nominal position value Posnom provided by a travel curve generator (45), said regulating signal acting on the power controller (24). The spring deflection of the cage (1) caused by a change in the load, occurring as a result of the compressibility of the hydraulic oil or as a result of the length change of the cable, can be adjusted by means of the position regulator (42). The invention renders redundant additional units for compensating the compressibility-related spring deflection in hydraulic lifts. The invention can also be applied to cable lifts. |
