Measuring and testing – Vehicle chassis – Steering
Patent
1997-08-04
2000-06-27
Dombroske, George
Measuring and testing
Vehicle chassis
Steering
G01L 322, G01M 1700
Patent
active
060792574
ABSTRACT:
Disclosed herein is a dynamometer control for a dynamometer including a control field coil and an air gap, which dynamometer control includes a main current line connected to the control field coil and including an electronic switch, means for generating a crossing signal incident to a sinusoidal crossing associated with current flow in the main line, and a micro-processor connected to the crossing signal generating means and to the electronic switch and including a counter which is operable to count between a given count and a zero count at a given counting rate, which includes means for adjusting the given count to provide an adjusted given count, which is operable, when the count is zero, to render the counter inoperable and to output a signal which turns on the electronic switch so as to provide current flow to the control field coil of the dynamometer until the counter is again activated, and which is operable, in response to receipt of the crossing signal, to activate the counter, to load the counter with the adjusted given count, to decrement the counter from the adjusted given count to the zero count at the counting rate, and to turn off the electronic switch so as to halt current flow to the control field coil of the dynamometer until arrival at the zero count, whereby the control field coil is deenergized for a time period determined by the adjusted given count.
REFERENCES:
patent: 3704624 (1972-12-01), Marten et al.
patent: 4161116 (1979-07-01), Fegraus et al.
patent: 4530248 (1985-07-01), Munson
patent: 5635651 (1997-06-01), Tascillo et al.
Grygera James W.
Wentzek Horst F.
Dombroske George
Frank L. Wells Company
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