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40m Log |
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Mon Mar 8 12:01:02 2021, Paco, Anchal, Summary, training, Investigate how-to XARM locking
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Mon Mar 8 12:40:35 2021, gautam, Summary, training, Investigate how-to XARM locking
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Mon Mar 8 19:22:56 2021, rana, Summary, SUS, IMC suspension characterization
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Thu Mar 11 08:13:24 2021, Paco, Anchal, Update, SUS, IMC First Free Swing Test failed due to typo, restarting now
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Tue Mar 16 19:13:09 2021, Paco, Anchal, Update, SUS, First success in Input Matric Diagonalization 
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Wed Mar 17 11:57:54 2021, Paco, Anchal, Update, SUS, Tested New Input Matrix for MC1 
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Wed Mar 17 16:30:46 2021, Anchal, Update, SUS, Normalized Input Matrices plotted better than SURF students 
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Thu Mar 18 09:18:49 2021, Paco, Anchal, Update, SUS, Testing of new input matrices with new data 
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Thu Mar 18 12:46:53 2021, rana, Update, SUS, Testing of new input matrices with new data
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Fri Mar 19 10:49:44 2021, Paco, Anchal, Update, SUS, Trying coil actuation balance
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Mon Mar 22 11:57:21 2021, Paco, Anchal, Update, SUS, Trying coil actuation balance 
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Mon Mar 22 15:10:00 2021, rana, Update, SUS, Trying coil actuation balance
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Mon Mar 22 19:07:50 2021, Paco, Anchal, Update, SUS, Trying coil actuation balance 8x
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Tue Mar 23 09:16:42 2021, Paco, Anchal, Update, Computers, Power cycled C1PSL; restored C1PSL 
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Wed Mar 24 09:23:49 2021, Paco, Update, SUS, MC3 new Input Matrix
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Thu Mar 25 11:46:31 2021, Paco, Anchal, Update, SUS, MC2 Coil Balancing updates   
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Thu Mar 25 15:31:24 2021, gautam, Update, IOO, WFS servos
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Fri Mar 26 11:54:37 2021, Paco, Anchal, Update, SUS, MC2 Coil Balancing updates
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Mon Mar 29 10:44:51 2021, Paco, Anchal, Update, SUS, MC2 Coil Balancing updates 
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Mon Mar 29 17:11:54 2021, gautam, Update, SUS, MC2 Coil Balancing updates
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Mon Mar 29 17:34:52 2021, rana, Update, SUS, MC2 Coil Balancing updates
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Wed Mar 31 22:58:32 2021, Anchal, Paco, Update, SUS, MC2 Coil Balancing Test
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Thu Apr 1 13:56:49 2021, Anchal, Paco, Update, SUS, MC2 Coil Balancing Test Results  
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Thu Apr 1 18:01:06 2021, Anchal, Paco, Update, SUS, MC2 Coil Balancing Test Results Success??  
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Thu Apr 1 18:48:45 2021, gautam, Update, SUS, MC2 Coil Balancing Test Results Success??
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Thu Apr 1 21:13:54 2021, Anchal, Update, SUS, Matrix results, new measurement set to trigger
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Fri Apr 2 14:51:20 2021, Anchal, Update, SUS, Bug found, need to redo the balancing
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Tue Apr 6 18:46:36 2021, Anchal, Paco, Update, SUS, Updates on recent efforts
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Wed Apr 7 17:38:51 2021, Anchal, Update, SUS, Trying to uncouple only PIT and YAW first    
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Thu Apr 8 17:04:43 2021, Anchal, Paco, Update, SUS, First Successful Coil Balancing  
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Fri Apr 9 13:13:00 2021, Anchal, Paco, Update, SUS, Faster coil balancing 
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Fri Apr 9 17:41:12 2021, rana, Update, SUS, Faster coil balancing
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Mon Apr 12 10:07:35 2021, Anchal, Update, SUS, What's F2A??
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Tue Apr 13 09:51:22 2021, rana, Update, SUS, What's F2A??
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Wed Apr 14 17:53:38 2021, Anchal, Update, SUS, Plan for calculating filter banks for output matrix aka F2A aka F2P
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Thu Apr 15 11:41:43 2021, Anchal, Update, SUS, Proposed filters for output matrix aka F2A aka F2P
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Fri Apr 16 11:36:36 2021, Anchal, Paco, Update, SUS, Tested proposed filters for POS colum in MC2 output matrix    
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Fri Apr 16 15:47:58 2021, rana, Update, SUS, Tested proposed filters for POS colum in MC2 output matrix
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Mon Apr 19 12:18:19 2021, Anchal, Paco, Update, SUS, Tested proposed filters for POS colum in MC2 output matrix  
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Tue Apr 20 10:52:49 2021, Anchal, Paco, Update, SUS, AC gain coil output balancing for IMC   
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Tue Apr 20 18:19:30 2021, Anchal, Update, SUS, MC2 coil balanced at DC  
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Wed Apr 21 11:38:27 2021, Anchal, Paco, Update, SUS, MC2 Damping Gains Optimized 
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Wed Apr 21 15:50:01 2021, Anchal, Paco, Update, SUS, MC2 Suspension Optimization summary
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Wed Apr 21 18:49:29 2021, rana, Update, SUS, MC2 Suspension Optimization summary
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Thu Apr 22 08:50:21 2021, Anchal, Update, SUS, MC2 Suspension Optimization summary
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Mon Apr 26 18:55:39 2021, Anchal, Paco, Update, SUS, MC2 F2A Filters Tested  
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Tue Apr 27 10:05:28 2021, Anchal, Paco, Update, SUS, MC1 and MC3 F2A Filters Tested   
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Wed Apr 28 10:56:10 2021, Anchal, Paco, Update, SUS, IMC Filters diagnosed 7x
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Wed Apr 28 17:09:11 2021, Anchal, Update, SUS, Tuned Suspension Parameters uploaded for long term behavior monitoring
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Thu Apr 29 10:52:56 2021, Anchal, Update, SUS, IMC Trans QPD and WFS loops step response test 
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Thu Apr 29 18:53:33 2021, Anchal, Update, SUS, IMC Suspension Damping Gains Test  
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Mon May 3 16:24:14 2021, Anchal, Update, SUS, IMC Suspension Damping Gains Test Repeated with IMC unlocked  
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Wed May 5 09:04:47 2021, Anchal, Update, SUS, New IMC Suspension Damping Gains uploaded for long term testing
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Wed May 12 11:45:13 2021, Anchal, Paco, Summary, SUS, New IMC Settings are miserable  
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Wed Jun 2 09:43:30 2021, Anchal, Paco, Summary, SUS, IMC Settings characterization   
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Wed Jun 2 16:20:59 2021, Anchal, Paco, Summary, SUS, IMC Suspension gains reverted to old values
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Sat May 15 14:54:24 2021, gautam, Update, SUS, IMC settings reverted
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Thu May 20 10:35:57 2021, Anchal, Update, SUS, IMC settings reverted
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Thu Apr 22 12:17:23 2021, Anchal, Paco, Update, SUS, MC1 and MC3 Suspension Optimization Summary
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Thu Apr 22 14:22:39 2021, gautam, Update, SUS, Settings restored
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Thu Apr 22 15:36:54 2021, Anchal, Update, SUS, Settings restored
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Thu Apr 22 17:04:17 2021, gautam, Update, SUS, Settings restored
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Sat Apr 10 10:07:47 2021, rana, Update, SUS, Faster coil balancing
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Fri Apr 2 15:22:54 2021, gautam, Update, SUS, Matrix results, new measurement set to trigger
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Sun Mar 28 14:16:25 2021, Anchal, Summary, SUS, MC3 new Input Matrix not providing stable loop
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Mon Mar 29 17:07:17 2021, gautam, Summary, SUS, MC3 new Input Matrix not providing stable loop
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Thu Mar 18 13:12:39 2021, gautam, Update, Computer Scripts / Programs, Omnigraffle vs draw.io
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Message ID: 15984
Entry time: Thu Apr 1 13:56:49 2021
In reply to: 15982
Reply to this: 15985
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Author: |
Anchal, Paco |
Type: |
Update |
Category: |
SUS |
Subject: |
MC2 Coil Balancing Test Results |
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The coil balancing attempt failed. The off-diagonal values in the measured sensing matrices either remained the same or increased.
The attempt in the morning was too slow. By the time we reached, it had reached to iteration 7 only and still nowhere near optimum sensing matrix had reached. We still needed to see if the optimum would eventually reach if more iterations happened.
<Radhika came for shadowing us and learning about 40m>
So we worked a bit on speeding up the data loading process and then ran the code again which now was running much faster. Still within 1 hr or so, we saw it had reached to iteration 7 with no sign of sensing matrix getting any better.
<Paco left for vaccination>
To determine if the method would work in principle, I decided to stop the current run and start with a 0.5 Hz bandwidth run (so about 7 averages with 8s duration data and welch method). This completed 20 iterations before Gautum came. But it was clear now that the method is not converging to a better solution. Need to find a bug in the implementation of the algorithm mentioned in last post or find a better algoritm.
Attachment 1 is the plot of how the sensing matrix's distance from the identity matrix increased over iterations in the last run.
Attachment 2 is the plot for different off-diagonal terms in the sensing matrix. It is clear that POS->PIT,YAW coupling is not being measured properly as it remains constant.
Attachment 3 Gautum told us that there is some naming error in nds and MC_TRANS_PIT/YAW can be read through C1:IOO-MC_TRANS_PIT_ERR and C1:IOO-MC_TRANS_YAW_ERR channels instead. To test if they indeed point to same values, we did a test of exciting YAW degree through LOCKIN1 and seeing if the peaks are visible in the channels. This was also done to give Radhika an opportunity to do something I could confidently mentor about. and to experience using diaggui. |
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