| CPC G01L 3/16 (2013.01) [G01M 17/03 (2013.01)] | 10 Claims |
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1. A dynamometer system comprising:
an oscillating dynamometer main body;
an inverter that supplies electric power corresponding to an inverter input signal to the oscillating dynamometer main body;
a torque detector that generates a torque detection signal corresponding to a torque generated in an oscillator of the oscillating dynamometer main body;
a speed detector that generates a speed detection signal corresponding to a rotation speed of an output shaft of the oscillating dynamometer main body; and
a controller that generates the inverter input signal based on the torque detection signal and the speed detection signal, and inputs the inverter input signal to the inverter,
wherein the controller includes:
a feedback controller that generates a feedback input signal based on a deviation between a detection signal, which is either one of the torque detection signal or the speed detection signal, and a feedback command signal for the detection signal;
a natural vibration suppression circuit that generates a correction signal for the feedback input signal to suppress a natural vibration of the oscillator based on the inverter input signal;
an inverter input generator that generates the inverter input signal based on the feedback input signal and the correction signal; and
a command generator that generates the feedback command signal based on the torque detection signal and the speed detection signal,
wherein the command generator generates the feedback command signal from a signal generated based on both the speed detection signal and the torque detection signal through band stop processing that attenuates a component within a predetermined stop band and allows a component outside the predetermined stop band to pass through.
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