Reports 1-1 of 1 Clear search Modify search
MIF (General)
takaaki.yokozawa - 9:47 Tuesday 11 February 2025 (32632) Print this report
Search the peaks around 1st violin mode
Since we can keep the observation state for a long time, we evaluated the peak frequencies around 1st violin mode.
2025/02/10 18:00- 512s FFT length, 10 times average, 50% overlap

I summarized the peak frequencies checked by my eye
(Fig.1., Fig.2. and Fig.3.)


166.84375
167.26562
167.8125
168.3125
173.20312
174.28125

176.76562
178.125
178.67188
178.9375
179.59375
179.75 - 180 ??
180.125
180.23438
180.28125
180.60938
180.98438
181.17188
181.9375
182.34375
182.45312
182.92188
183.23438
183.625
184.60938
184.79688

187.53125
189.92188
191.15625
191.375
Images attached to this report
Comments to this report:
takaaki.yokozawa - 16:56 Tuesday 11 February 2025 (32642) Print this report
I tried to identify the peaks which come from (IX, IY, EX and EY) by exciting the IM_P one by one.

166.84375 EYIMP 11:01:10
167.26562 NOEYIMP
167.8125 Locked loss when EYIMP excited(Two times)
168.3125 EYIMP 12:20:00
173.20312 NOEYIMP
174.28125 NOEYIMP

176.76562 NOEYIMP
178.125 NOEYIMP
178.67188 NOEYIMP
178.9375 NOEYIMP NOIYIMP NOIXIMP EXIMP 16:41:00
179.59375 NOEYIMP IYIMP 16:28:02
179.75 - 180 ?? POWER LINE?
180.125 NOEYIMP IYIMP 16:15:00
180.23438 NOEYIMP NOIXIMP NOIYIMP EXIMP 13:57:00
180.28125 NOEYIMP IXIMP 16:03:00
180.60938 NOEYIMP NOIYIMP NOIXIMP EXIMP 15:47:00
180.98438 NOEYIMP IYIMP 15:35:00
181.17188 NOEYIMP IXIMP 15:21:00
181.9375 NOEYIMP ??? several exitation in IX and IY
182.34375 NOEYIMP NOIYIMP IXIMP 15:08:00
182.45312 NOEYIMP NOIXIMP NOIYIMP EXIMP 14:59:00
182.92188 NOEYIMP NOIYIMP NOIXIMP EXIMP 14:49:00
183.23438 NOEYIMP EXIMP 14:39:00
183.625 NOEYIMP NOIYIMP NOIXIMP NOEXIMP
184.60938 NOEYIMP IYIMP 14:23:00
184.79688 NOETIMP NOIYIMP NOIXIMP EXIMP 14:14:00

187.53125 EYIMP 13:34:00
189.92188 EYIMP 13:08:00
191.15625 NOEYIMP
191.375 EYIMP 12:58:00

There would be the non violin mode peaks
~180 Hz power line
Three OMC bread resonant frequency *2
~89.6 * 2 = ~179.2
~90.8 * 2 = ~181.6
~91.1 * 2 = ~182.2
takaaki.yokozawa - 7:14 Wednesday 12 February 2025 (32643) Print this report
[Komori, Yokozawa]

We can excite most part of the peaks by exiting the IM P.

166.84375 EYIMP 11/11:01:10
167.26562 NOIXIMP NOIYIMP NOEXIMP EYIMP 12/06:18:00
167.8125 EYIMP 12/07:03:00
168.3125 EYIMP 11/12:20:00
173.20312 NOEYIMP IXIMP 12/06:08:00
174.28125 NOEYIMP NOIYIMP IXIMP 12/05:58:00

176.76562 NOEYIMP NOIXIMP IYIMP 12/05:45:00
178.125 NOEYIMP NOIYIMP IXIMP 12/05:36:00
178.67188 NOEYIMP IYIMP 12/05:22:00
178.9375 NOEYIMP NOIYIMP NOIXIMP EXIMP 11/16:41:00
179.59375 NOEYIMP IYIMP 11/16:28:02
179.75 - 180 ?? POWER LINE?
180.125 NOEYIMP IYIMP 11/16:15:00
180.23438 NOEYIMP NOIXIMP NOIYIMP EXIMP 11/13:57:00
180.28125 NOEYIMP IXIMP 11/16:03:00
180.60938 NOEYIMP NOIYIMP NOIXIMP EXIMP 11/15:47:00
180.98438 NOEYIMP IYIMP 11/15:35:00
181.17188 NOEYIMP IXIMP 11/15:21:00
181.9375 NOEYIMP IXIMP 12/06:55:00
182.34375 NOEYIMP NOIYIMP IXIMP 11/15:08:00
182.45312 NOEYIMP NOIXIMP NOIYIMP EXIMP 11/14:59:00
182.92188 NOEYIMP NOIYIMP NOIXIMP EXIMP 11/14:49:00
183.23438 NOEYIMP EXIMP 11/14:39:00
183.625 EYIMP 12/06:41:00
184.60938 NOEYIMP IYIMP 11/14:23:00
184.79688 NOETIMP NOIYIMP NOIXIMP EXIMP 11/14:14:00

187.53125 EYIMP 11/13:34:00
189.92188 EYIMP 11/13:08:00
191.15625 EYIMP 12/06:29:00 exite 191.375 after stop the excitation (Fig.1.)
191.375 EYIMP 11/12:58:00
Images attached to this comment
dan.chen - 14:05 Thursday 03 July 2025 (34443) Print this report

With Hiroshi Takaba,

We put the suspension name on the figures reported on klog32632.
We did not do any analysis, but just read this klog and put the suspension names on the figures.

Images attached to this comment
Search Help
×

Warning

×