B - Operations – Transporting – 66 – B
Patent
B - Operations, Transporting
66
B
364/30
B66B 1/32 (2006.01) B66B 1/28 (2006.01) H02P 27/02 (2006.01)
Patent
CA 1189991
INVENTOR: GERHARD KINDLER INVENTION: DRIVE CONTROL FOR A TRANSPORTATION SYSTEM, ESPECIALLY AN ELEVATOR ABSTRACT OF THE INVENTION In this drive control the regulating circuits for the rotational speed of a drive motor and of an eddy current brake are matched in their static and in their dynamic behavior so that a common regulator may be used for both regulating circuits. The matching is achieved by interposing a current regulation circuit for regulating the excitation current of the eddy current brake to the rotational speed regulating circuit. The output of the common regulator is supplied via a linearization member as a reference value to a regulator in the current regulation circuit during the deceleration phase. During the acceleration phase the output of the common regulator is supplied to a matching element matching the variation of the torque to the variation of the torque during the deceleration phase with respect to time. The output of the matching element is connected to the control member of the drive motor via a linearization member. By means of the linearization members the characteristics of a d.c.-shunt motor are approximately achievable. A distance regulating circuit is superposed on the rotational speed regulating circuit. The distance reference value is derived from jerk and acceleration magnitudes during the acceleration phase as well as during the deceleration phase, so that an optimum travel curve is achievable. - 2 -
426431
Ag Inventio
Johnson & Hicks
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