Electricity: motive power systems – Plural diverse motor controls – Motor-reversing
Patent
1982-08-05
1985-02-05
Truhe, J. V.
Electricity: motive power systems
Plural diverse motor controls
Motor-reversing
318265, 318266, 318466, 318468, 187 29R, H02P 104
Patent
active
044980337
ABSTRACT:
Disclosed is an automatic door actuator which comprises arithmetic unit for calculating a weight of a door, a distance of movement of the door and braking points of the door through learn control of door actuation which is effected once every time a power supply switch is turned on and irrespective of the on-off condition of a normal door actuation start switch; first memory for storing results of calculation by the arithmetic unit; second memory for previously storing various phase angles for starting operation, for deceleration braking operation and for predetermined low velocity control, corresponding to various weights of the door; whereby the control unit is responsive to the first memory to read out from the second memory the phase angles for starting operation, for deceleration braking operation and for predetermined low velocity control corresponding to the actual weight of the door determined in the learn control to thereby supply a trigger signal to semiconductor controlled rectifying elements in accordance with the read-out phase angles corresponding to the actual door weight and the distance of movement of the door and the braking points of the door determined in the learn control.
REFERENCES:
patent: 4234833 (1980-11-01), Barrett
patent: 4299308 (1981-11-01), Shung et al.
patent: 4300660 (1981-11-01), Schoemmann et al.
patent: 4305480 (1981-12-01), Hmelovsky
patent: 4338553 (1982-07-01), Scott, Jr.
patent: 4365250 (1982-12-01), Matsuoka et al.
patent: 4383206 (1983-05-01), Matsuoka et al.
patent: 4393342 (1983-07-01), Matsuoka et al.
patent: 4401929 (1983-08-01), Odaka et al.
Aihara Hiroshi
Ishibashi Hiroe
Kobashi Rikiya
Matumura Akira
Satomi Keisuke
Hokuyo Automatic Co., Ltd.
Ip Paul Shik Luen
Truhe J. V.
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