Electricity: motive power systems – Braking – Dynamic braking
Patent
1980-12-22
1983-12-13
Truhe, J. V.
Electricity: motive power systems
Braking
Dynamic braking
318258, 318342, 318345B, 318375, H02P 314
Patent
active
044207166
ABSTRACT:
A DC motor control apparatus is disclosed comprising a first pair of switching elements coupled respectively with oppositely poled ends of the DC motor. A first actuating means is provided for actuating one of a first pair of switching elements in response to an input signal of a first predetermined logic content. The other of the first pair of switching elements is provided to respond to an input signal of a second predetermined logic content. Also provided, are means for applying a driving potential to the oppositely poled end of a motor simultaneously with the actuation of each of the first pair of switching elements, thereby establishing a current path for forward direction and reverse direction operation of said DC motor, respectively. A second pair of switching elements are respectively connected to oppositely poled ends of the DC motor. Second actuating means are provided for simultaneously actuating both of the second pair of switching elements and both of the first pair of switching elements in response to an input signal of a third predetermined logic content, thereby forming a current path for releasing an electromotive force of either polarity from the DC motor during braking.
REFERENCES:
patent: 3737751 (1973-06-01), Lima
patent: 3811081 (1974-05-01), Abbadessa
patent: 3887856 (1975-06-01), Cicchiello
patent: 4104571 (1978-08-01), Gurwicz et al.
patent: 4319170 (1982-03-01), Brent
patent: 4319171 (1982-03-01), Motoori
"Motor Control Using Logic Circuits," by G. Gimber, Electronic & Applications Industry (France), No. 234 (Apr. 1, 1977).
Imazeki Kazuyoshi
Nakano Masao
General Research of Electronics Inc.
Moose Richard M.
Truhe J. V.
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