Electricity: motive power systems – Constant motor current – load and/or torque control
Reexamination Certificate
2005-05-10
2005-05-10
Masih, Karen (Department: 2837)
Electricity: motive power systems
Constant motor current, load and/or torque control
C318S434000, C318S567000, C318S254100
Reexamination Certificate
active
06891345
ABSTRACT:
An actuating drive including an electronically commutated electric motor which operates with a position-dependent summed torque and which, using a torque controller and a controlled system, is able to be adjusted to a selectable, torque-dependent setpoint value according to a continuously increasing torque-time characteristic curve. The torque controller is able to have supplied to it a torque-dependent actual value of the electric motor in addition to the set point value to derive a control signal. A positioning control is subordinate the torque control, the positioning control providing that the minima between the maxima of the summed torque are rapidly and reliably passed and the electric motor is stopped in the region of a maximum.
REFERENCES:
patent: 4456865 (1984-06-01), Robertson et al.
patent: 6237563 (2001-05-01), Froehlich et al.
patent: 40 31 816 (1991-04-01), None
patent: 43 14 211 (1994-11-01), None
patent: 195 03 492 (1996-08-01), None
patent: 198 40 572 (2000-03-01), None
Kenyon & Kenyon
Masih Karen
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