Torque Meter Frequently Asked Questions
Question number FAQ-1338
I am observing the torque ripple of a motor. When comparing the analog outputs of the TS-3200 and TS-800B under the same motor, the same torque detector (SS type), and the same measurement conditions, the waveform of the TS-3200's analog output was a smooth sine wave with less torque ripple compared to the TS-800B. Why is this? Is it possible to achieve similar waveforms?
In the TS-800B, the time constant is 10 ms + approximately 7 ms (fixed specification), but in the TS-3200, it was used under the condition that "when using MD series and SS series torque detectors, set the time constant to 63 ms or more," so it is presumed that the output was a smooth sine wave.
Therefore, to approximate the output waveforms of both models, the current time constant of the TS-3200 should be adjusted to match the 10 ms of the TS-800B. However, the time constant setting for the TS-3200A is as per the specifications below, and a setting of 10 ms is not possible.
◆TS-3200 Response Time (Time Constant Settings)
16 ms / 31 ms / 63 ms / 125 ms / 250 ms / 500 ms / 1 s / 2 s / 4 s / 8 s / 16 s / 32 s / 64 s
In the case of standard specifications, the lower limit is 16 ms, but if you set a time constant shorter than the one currently in use, torque ripple components are likely to appear in the output, making it resemble the output waveform of the TS-800B.
Last updated: 2019-07-30