Vehicle door control apparatus

Details Vehicle door control apparatus Vehicle door control apparatus

1982-05-24

1984-09-11

Truhe, J. V.

Electricity: motive power systems

Motor-reversing

Periodic- or intermittent-reversing

318309, 318463, H02H 785

Patent

active

044712740

ABSTRACT:
A passenger vehicle door obstruction sensing control apparatus includes a first time period that begins when a door close command signal is received and the vehicle doors start to close. This first time period permits the door drive motor to reach a steady-state speed of operation. Then a motor speed responsive signal is provided to a speed reduction sensing apparatus for opening the doors for a second time period whenever the motor speed reduces below a predetermined limit.

REFERENCES:
patent: 2992378 (1961-07-01), Schneider
patent: 3775750 (1973-11-01), Woods
patent: 3845375 (1974-10-01), Stiebel
patent: 4035702 (1977-07-01), Pettersen et al.
patent: 4145728 (1979-03-01), Royer
patent: 4234833 (1980-11-01), Barrett
patent: 4263536 (1981-04-01), Lee et al.
patent: 4269377 (1981-05-01), Rush et al.
R. C. Hoyler, Automatic Train Control, Sep. 1972, pp. 145-152.
B. L. Costa, Sao Paulo Metro E. W. Line Inovations, Oct. 10, 1977, pp. 1107-1109.
T. C. Selis, Atlanta Airport People Mover, 3/22/78, pp. 1-10.
J. R. Tucker, Skybus to Orlando, 3-28-79, pp. 1-7.
McDonald, App. of Microprocessor, 3-28-79, pp. 1-9.

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