Measuring and testing – Volume or rate of flow – By measuring vibrations or acoustic energy
Patent
1980-10-15
1983-05-10
Ruehl, Charles A.
Measuring and testing
Volume or rate of flow
By measuring vibrations or acoustic energy
73117, G01L 322, G01M 1500
Patent
active
043823882
ABSTRACT:
A method for operating a test machine under a reproduced road load by using a dynamometer having its rotary portion coupled to the test machine comprises using a device for providing the same moment of inertia for the dynamometer rotary portion as that of a test machine. Speed values are stored in relation to corresponding times at which the test machine runs at the respective speed values while the test machine is coasting. The speed of rotation of the dynamometer rotary portion is controlled to meet the stored speed values at the corresponding times. During the speed control operation, load values are stored in relation to corresponding speeds at which the respective load values appear on the dynamometer rotary portion. The load produced by the dynamometer is controlled to meet the stored load values according to the speed of running of the test machine.
REFERENCES:
patent: 3926043 (1975-12-01), Marshall et al.
patent: 4186593 (1980-02-01), Watanabe
patent: 4257261 (1981-03-01), Ono et al.
Kabushiki Kaisha Ono Sokki
Ruehl Charles A.
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