Electricity: motive power systems – With particular motor-driven load device – Tension-maintaining type of motor-control system
Reexamination Certificate
2005-01-11
2005-01-11
Martin, David (Department: 2837)
Electricity: motive power systems
With particular motor-driven load device
Tension-maintaining type of motor-control system
C318S009000, C318S034000, C318S037000, C318S105000, C005S616000
Reexamination Certificate
active
06841953
ABSTRACT:
A control for DC motors, in particular actuators driven by a DC motor for adjustment of furniture, such as tables, beds, chairs, etc. includes a pseudomotor which is capable of supplying a voltage that corresponds to the motor speed on the basis of the current and voltage supplied to the motor. The voltage of the pseudomotor is supplied to an adjustable power supply, where it is compared with an internal reference voltage and adjusts the voltage difference down to the smallest possible difference between the voltage of the pseudomotor and the internal reference voltage. For greater accuracy, the control additionally includes a compensation circuit configured to evaluate a dominating frequency in the commutator noise. Thus, there is provided a simple and low cost control for parallel running of two or more actuators.
REFERENCES:
patent: 3926513 (1975-12-01), Silver et al.
patent: 4012134 (1977-03-01), Silver et al.
patent: 4025972 (1977-05-01), Adams et al.
patent: 4156257 (1979-05-01), Roberts
patent: 4174237 (1979-11-01), Hemming et al.
patent: 4423360 (1983-12-01), Pasterkamp
patent: 4484121 (1984-11-01), Chambron
patent: 4733144 (1988-03-01), Bisseling
patent: 4740732 (1988-04-01), Way
patent: 5161274 (1992-11-01), Hayes et al.
patent: 5205004 (1993-04-01), Hayes et al.
patent: 5239247 (1993-08-01), Habig et al.
patent: 5528114 (1996-06-01), Tokizaki et al.
patent: 5544376 (1996-08-01), Fromson
patent: 5596253 (1997-01-01), Mizuta et al.
patent: 5600214 (1997-02-01), Fromson
patent: 5715548 (1998-02-01), Weismiller et al.
patent: 5898280 (1999-04-01), Yang
patent: 6106576 (2000-08-01), Fromson
patent: 6509705 (2003-01-01), Bastholm et al.
patent: 6539566 (2003-04-01), Hayes
patent: 6595144 (2003-07-01), Doyle
patent: 6650072 (2003-11-01), Harlan
Colon Santana Eduardo
Dykema Gossett PLLC
Linak A/S
Martin David
LandOfFree
Control for two or more dc motors, in particular actuators... 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 for two or more dc motors, in particular actuators..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Control for two or more dc motors, in particular actuators... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3423310