B - Operations – Transporting – 66 – B
Patent
B - Operations, Transporting
66
B
B66B 1/26 (2006.01) B66B 1/24 (2006.01)
Patent
CA 2128946
Process and apparatus for controlling a hydraulic lift wherein with this process, a direct approach to a floor can be achieved without requiring a creeping velocity drive, whereby the car is controlled in a position-dependent manner during the deceleration phase, for the purpose of which a control region is formed which is subdivided into percentage values, the percentage values being retained in tabular form with reference to measured actual position values and upon input of a specific actual position value, the corresponding percentage value is multiplied with the value of the control region (CS) and to this product eventually are added a control deviation (CO) and a pilot control signal (SO) wherein the sum which constitutes the actual control signal used during the deceleration phase, is forwarded to a regulation valve arrangement. An apparatus for carrying out the process is also set forth.
Johansson Kjell
Ag Inventio
Riches Mckenzie & Herbert Llp
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