Electricity: motor control systems – Open loop speed control system for dc motor with commutator – Armature control by digital or combined analog and digital...
Patent
1992-05-04
1994-05-31
Shoop, Jr., William M.
Electricity: motor control systems
Open loop speed control system for dc motor with commutator
Armature control by digital or combined analog and digital...
388831, 388840, 388910, 318139, H02P 729
Patent
active
053176693
ABSTRACT:
The present invention is a two unit electronic control system to reduce power demands imposed upon direct current power sources. The present invention comprises a contact/resistor network, a trigger generator, a pulse generator, a waveform stabilization circuit, a driver circuit, a voltage regulation circuit, a noise suppression circuit, a transient suppression circuit, a field effect transistor network and primary and secondary on/off control circuits. The input can be resistance, voltage, current or capacitance which is varied in response to an external stimulus. The chosen input is conditioned and applied to vary the duty cycle of a repeating pulse signal. That pulse signal is conditioned and applied to a switching device which controls the current from the DC power source to the load. The number of switching devices comprising the network will vary from one to many dependent upon the current carrying demand of the load and the current handling capability of the switching device utilized.
REFERENCES:
patent: 3803473 (1974-04-01), Stich
patent: 3878449 (1975-04-01), Wilhelm et al.
patent: 4011492 (1977-03-01), Murphy et al.
patent: 4532460 (1985-07-01), Coale et al.
patent: 4599548 (1986-07-01), Schultz
patent: 4626750 (1986-12-01), Post
patent: 4841165 (1989-06-01), Bowles
patent: 4871952 (1989-10-01), Ishizaka et al.
Anderson James D.
Searcy, II John V.
Comuzzi Donald R.
Makay Christopher L.
Martin David
Shoop Jr. William M.
Svoboda John
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