Control device without a speed sensor for controlling speed...

Details Control device without a speed sensor for controlling speed... Control device without a speed sensor for controlling speed...

2004-10-28

2010-02-09

Salata, Jonathan (Department: 2837)

Elevator, industrial lift truck, or stationary lift for vehicle

Having specific load support drive-means or its control

Includes control for power source of drive-means

C187S393000

Reexamination Certificate

active

07658268

ABSTRACT:
A control device for a rotating machine driving an elevator suppresses increases in the moving time of the elevator while securing control and stability in accordance with moving direction and load of a car of the elevator. A control device for controlling speed of the rotating machine without using a speed sensor includes a speed command signal generator for generating a rotational speed command for the rotating machine; and a speed sensor-less controller for controlling a voltage applied to the rotating machine without using a speed sensor, based on the rotational speed command from the speed command signal generator. In the control device, the speed command signal generator changes an acceleration running curve in a deceleration interval in accordance with the moving direction and the load of the car of the elevator to generate the rotational speed command.

REFERENCES:
patent: 4982816 (1991-01-01), Doi et al.
patent: 5035301 (1991-07-01), Skalski
patent: 5155305 (1992-10-01), Horbruegger et al.
patent: 5325036 (1994-06-01), Diethert et al.
patent: 5414333 (1995-05-01), Tanahashi
patent: 5777280 (1998-07-01), Braasch et al.
patent: 607 646 (1994-07-01), None
patent: 5-17079 (1993-01-01), None
patent: 9-227036 (1997-09-01), None
patent: 9-240935 (1997-09-01), None
patent: 2003-238037 (2003-08-01), None
Kinpara, Yoshihiko et al.; “Stability Analysis of Adaptive Flux Observer of Induction Motor in Regenerative Operation”,Inst. Electrical Engineers of Japan-Industry Applications Society, I-55 (1998).

Affiliated with

Also associated with

Rating

Control device without a speed sensor for controlling speed... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Control device without a speed sensor for controlling speed..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Control device without a speed sensor for controlling speed... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4156618