Device and method for accurately detecting torque of auxiliary d

Details Device and method for accurately detecting torque of auxiliary d Device and method for accurately detecting torque of auxiliary d

1997-07-30

1999-09-14

Dombroske, George

Measuring and testing

Dynamometers

Responsive to torque

G01L 302

Patent

active

059525860

ABSTRACT:
An alternator provides its output current waveform directly or via a current probe to a low pass filter and a high pass filter. The resulting waveform is provided to a half-wave rectifier and a comparator to obtain a rectangular waveform. The arithmetic circuit determines the number of clock pulses between rectangular waves to obtain the rotation speed of the alternator. The torque due to auxiliary devices is computed based on the ratio of the rotation speed of a crankshaft to the rotation speed of the alternator.

REFERENCES:
patent: 3992932 (1976-11-01), Venema
patent: 4141245 (1979-02-01), Brandstetter

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