Method and apparatus for simulating a mass or load on a stationa

Details Method and apparatus for simulating a mass or load on a stationa Method and apparatus for simulating a mass or load on a stationa

1995-06-07

1997-08-12

Chin, Gary

Boots, shoes, and leggings

364578, 73116, 73117, G01M 1700

Patent

active

056572271

ABSTRACT:
A torque moment is simulated in a rotary testing stand for test samples by providing a feed-back closed loop control circuit for controlling a torque moment generator. The feed-back control circuit generates a feed-back control signal by differentiating an angular velocity signal derived from a torque applying shaft and passing the differentiated signal through a proportional time element that has a controllable, variable time constant. Both the differentiating circuit and the time circuit are preferably controlled by a difference signal that represents a difference between the inertia moment of the test sample and the inertia moment of the testing stand. The output signal of the time circuit is compared in a comparator with an actual torque signal. The output of the comparator provides a rated or reference torque signal that is then used for adjusting the output of the torque generator to produce the required simulated torque load.

REFERENCES:
patent: 4621524 (1986-11-01), Von Thun
patent: 4656576 (1987-04-01), Kawarabayashi
patent: 4745799 (1988-05-01), Kawarabayashi et al.
patent: 5465612 (1995-11-01), La Belle
patent: 5542290 (1996-08-01), Suzuki
Ernst Mirus et al. "Hochgeschwindigkeits-Personenwagen-Trommelprufstand mit digitalem Fahrsimulator" Automobiltechnische Zeitschrift 86 (Nov. 1984), pp. 495, 496, 501, 502.

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