B - Operations – Transporting – 66 – B
Patent
B - Operations, Transporting
66
B
364/19
B66B 1/28 (2006.01) B66B 1/16 (2006.01) B66B 3/00 (2006.01)
Patent
CA 1165478
49,236 ABSTRACT OF THE DISCLOSURE An elevator system including an elevator car, and control apparatus for controlling its speed, including a floor selector and a speed pattern generator. The speed pattern generator provides a running speed pattern, and a slowdown speed pattern. A smooth transfer from the run- ning speed pattern to the slowdown speed pattern is achieved by the generation of first and second decelera- tion signals, and a transfer signal. When the floor selector issues a slowdown signal, the slowdown speed pattern is initiated and the first deceleration signal causes the running speed pattern to have a zero rate of change. First and second different relationships between the running speed pattern and the slowdown speed pattern then successively cause the issuance of the second decel- eration signal and the transfer signal, with the second deceleration signal causing the running speed pattern to have a predetermined constant rate of change, less than that of the slowdown speed pattern, such that the patterns intersect. Pattern equality causes the issuance of the transfer signal, which initiates the substitution of the slowdown speed pattern for the running speed pattern.
390717
Caputo William R.
Husson Alan L.
Oldham And Company
Westinghouse Electric Corporation
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