Boots – shoes – and leggings
Patent
1976-03-25
1978-03-21
Gruber, Felix D.
Boots, shoes, and leggings
340 62, 364551, 364805, G06G 770
Patent
active
040806545
ABSTRACT:
A vehicle performance monitor includes a simulator which responds to the same control signals as does the vehicle control system and, produces at its output, a signal against which actual vehicle performance can be measured. This signal and another signal, generated by the vehicle control system, indicative of vehicle performance are compared, by a comparator in the vehicle performance monitor, to determine if the vehicle is properly responding to the control signals.
The simulator may comprise a function generator which accepts the control signals and transforms them in a form so as to control a voltage controlled oscillator (VCO). The VCO produces an output signal which can be compared with the output of a vehicle mounted device producing a signal related to the actual vehicle performance. For instance, the function generator may produce a signal related to expected vehicle velocity and the vehicle mounted device may be a tachometer. The comparator includes a modulator and a band pass filter. Energy will pass the filter only if the vehicle is proceeding at the command speed or within allowable tolerances thereof.
Although double side band amplitude modulation may be employed, particular advantages are obtained employing single band modulation. In particular, the single side band modulation provides a constant tolerance band independent of vehicle velocity and also provides vehicle direction information.
REFERENCES:
patent: 3985396 (1976-10-01), Kuwana et al.
General Signal Corporation
Gruber Felix D.
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