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AOS (Beam Reducing Telescopes)

satoshi.tanioka - 17:34 Wednesday 20 February 2019 (8159)

Coil Actuator Calibration

at Mitaka

I measured the actuator efficiency of coil for TMS-VIS with the same setup as yesterday's (8138).
I used the voltage which was displayed on the signal generator's screen in the result of yesterday's measurement, though they adopted estimated output in the previous measurenent (5014).
So I modified the voltage to adjust the conditions. (estimated voltage is adopted as the same manner as klog5014)

Attached plots show the results of the coil actuator labeld No.13, 15, and 16.
No.14 was broken due to wire's disconnection...

[Results] (all value have same unit [N/V])
No.13 : 0.0263
No.15 : 0.0264
No.16 : 0.0266

These results seem compatible with the previous results (5014).

[Note]
Glue remained on the coil wire...

Images attached to this report

Comments to this report:

tomotada.akutsu - 19:05 Wednesday 20 February 2019 (8162)

And I investigated No.14 and found the wire was cut. I could pick up both of the cut edges so I connected them by soldering, but it did not recover the situation; at least at one more location hidden there would be a cut... AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA... It was surely connected before baking (Sato-san measured the resistance at Mitaka when he attached connector pins to the wires).

By the way, the glue remaining seemed so strange; probably the baking temperature was higher than the usual?