ProcessControl@Padlet by khairul anwar

ProcessControl@Padlet by khairul anwar https://padlet.com/khairulanwar862/rkne2uuz44wc Share insight and reserve your lab day here en-us 2016-09-23 09:11:16 UTC 2023-05-28 20:59:22 UTC hello@padlet.com https://padlet-assets.s3.amazonaws.com/icons/Growing.png hi... you could actually discuss efficiently here. everybody can read your comment and share their insight khairulanwar862 https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/125946566 https://padlet.com/khairulanwar862/rkne2uuz44wc]]> 2016-09-23 09:14:14 UTC https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/125946566 raw data here should include excel file with your experimental result. Table of raw data should have proper column description/title khairulanwar862 https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/126554039 2016-09-27 04:29:00 UTC https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/126554039 for group izzati (Flow) khairulanwar862 https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/126555934 for practical 2 Proportional Controller of Flow Control , your result show no effect of changing the P band. You cannot discuss it using this data. I suggest you increase the gap between point.

for PI controller of flow control, you should start with Tr=0 and increase the Tr gradually to observe the effect. By doing this, you could observe the effect of Tr to that system.]]> 2016-09-27 05:01:23 UTC https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/126555934 for group Wong (flow) khairulanwar862 https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/126557301 practical 2 P-control offset
you should same amount of value/plot/data point for all the graph here. It important because you want to compare them.

as for PI control, based on other group result. At Tr=0, you should experience large offset and when you increase the Tr, PV will gradually meet/match/overlap SP]]> 2016-09-27 05:24:54 UTC https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/126557301 for group avinashrao (flow) khairulanwar862 https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/126557702 can you provide plot for that data as well as use proper column title. ]]> 2016-09-27 05:31:23 UTC https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/126557702 relationship proportional band and output khairulanwar862 https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/126559665 Commonly referred to as the throttling range (TR), proportional band is defined as the amount of change in the controlled variable required to drive the loop output from 0 to 100%. Systems subjected to abrupt changes in load or setpoint will typically require a wider proportional band to achieve stability in control during these system upsets. Very quick system response times, such as those found in static pressure control, will require much wider proportional bands to prevent “overshoot,” the most common cause of oscillation. The gain of the loop is inversely proportional to the throttling range or proportional band. In general, decreasing the throttling range will increase the amount of over shoot. Conversely, the larger the throttling range, the slower the loop will respond.

Gain is the ratio of output change (%) over the measured variable change (%) that caused it.

Where PB is the proportional band.

Example: If the PB is 20%, then the gain is 5. A 3% change in the error signal (setpoint- process variable) will result in a 15% change in a controller’s output, due to the proportional action. If gain is 2, then the PB is 50%.

]]> 2016-09-27 06:02:54 UTC https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/126559665 for group jolene khairulanwar862 https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/126561154 upload your raw data as well and make sure table has proper column title.
practical 3 effect of changing the set point, first graph 50%sp has too big y-axis which is why 50% is almost at 0%. for graph step 1-2, have you try change the SP directly to 70%. It might produce diff result. Try or see other group findings that change SP directly.

for effect of changing the P band
objective is to study effect of changing P band to process variable (PV). I believe what you doing is for effect of changing the set point. If your team still want to continue with that data, you may need to include all the plot in one graph and make sure point is the same for x-axis. Alternatively, you can constant the SP, auto mode then change the P band accordingly to observe the offset.

]]> 2016-09-27 06:20:26 UTC https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/126561154 Group Wong https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/126579635 Thank you sir, noted. We will do the correction as per mentioned]]> 2016-09-27 08:18:26 UTC https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/126579635 Group https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/126672569 Thank you sir for your feedback. We will update the raw data as soon as possible. :-)

]]> 2016-09-27 14:18:17 UTC https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/126672569 group jolene https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/126812395 Hi sir, for effect of changing P-band, we were just following what the instructions tell us to do. But we'll try to plot all P-bands in a graph with matching(constant) setpoint so that the trends can be seen clearly. :)
We'll update you with our practical 3 graphs and raw data in excel file. Thank you sir. :)

]]> 2016-09-27 20:29:14 UTC https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/126812395 for group jolene khairulanwar862 https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/126846865 ya sure you can do that....i look forward to see your graph]]> 2016-09-28 02:23:21 UTC https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/126846865 group justinarose (level) 04/10/2016 khairulanwar862 https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/128038643 please include axis for every graph and legend should refer to the same trend for both graph]]> 2016-10-04 01:09:39 UTC https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/128038643 Group afifah nurafifahtomiran https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/128056125 sir, how about our raw data. it's okay?]]> 2016-10-04 04:45:43 UTC https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/128056125 Lab Report Format https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/128142907 Hi Sir, is there any lab format/ guideline that we should follow?]]> 2016-10-04 12:58:02 UTC https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/128142907 group fardaus (pressure P controller khairulanwar862 https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/128669102 practical 4, refer to the graph below. need more data to show stable PV]]> 2016-10-06 01:09:02 UTC https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/128669102 group fardaus (pressure P controller practical 4 PB 150%) khairulanwar862 https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/128671040 data should show stable PV. Check also PB 12% at set point 70%.]]> 2016-10-06 01:30:23 UTC https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/128671040 group jolene practical 4 step 1&2 pressure khairulanwar862 https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/130302884 you raw data for this step/experiment has PV of 6000]]> 2016-10-13 00:38:28 UTC https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/130302884 group wong PI flow khairulanwar862 https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/130305402 for SP 30 to 10, your result for SP change has not stabilized to SP10 yet.]]> 2016-10-13 00:58:57 UTC https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/130305402 group Afifah practical 4 pressure P controller (step 3) khairulanwar862 https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/130311815 check your graph]]> 2016-10-13 01:48:42 UTC https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/130311815 group Afifah practical 1 pressure P khairulanwar862 https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/130311929 exclude PV outliers (6000+)]]> 2016-10-13 01:49:48 UTC https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/130311929 From group jolene https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/130612630 Thank you for the comments, sir. We will omit the PV 6000 outliers. :)]]> 2016-10-13 21:46:53 UTC https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/130612630 GROUP FARDAUS https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/131025895 The stable data was taken but it was used to plot for the next step(refer to Step 6). We will improve the graph for both PB 120% and 150% for the report.]]> 2016-10-17 02:51:59 UTC https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/131025895 group D (Allene Albania) khairulanwar862 https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/131335176 proceed with report for flow P and PI. Next time, attached together raw data.]]> 2016-10-18 00:45:09 UTC https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/131335176 group Afifah level P khairulanwar862 https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/131340715 proceed with report]]> 2016-10-18 01:09:55 UTC https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/131340715 From Group D https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/131390943 We will include the raw data next time. Thanks sir :)]]> 2016-10-18 08:43:28 UTC https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/131390943 jolene flow PI and P khairulanwar862 https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/136013878 proceed with report]]> 2016-11-08 08:19:33 UTC https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/136013878 group Wong flow PI and P khairulanwar862 https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/136014003 proceed with report f]]> 2016-11-08 08:20:10 UTC https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/136014003 group Wong pressure Practical 2 khairulanwar862 https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/136016977 please provide the raw data -unaltered-]]> 2016-11-08 08:37:32 UTC https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/136016977 group Wong practical 4 pressure khairulanwar862 https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/136282966 please use correct data for step 6 practical 4 pg. 9

you may proceed with report for pressure]]> 2016-11-09 02:03:40 UTC https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/136282966 Group Wong https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/137245539 Hi sir, the comment on pressure raw data is for p or pi?]]> 2016-11-14 01:00:10 UTC https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/137245539 group Wong practical 2 pressure P khairulanwar862 https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/137593761 Actually i ask for raw data for practical 2 (P) the file you upload is the same things, just want to make sure the trend but since it has an acceptable trend. You may proceed with report.]]> 2016-11-15 01:35:19 UTC https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/137593761 group Syeedah practical 1 pressure P khairulanwar862 https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/137596408 for SP50 at PB400%, you should get PV inline with SP. you may proceed with report after that.]]> 2016-11-15 01:53:30 UTC https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/137596408 group Syeedah practical 2 pressure P khairulanwar862 https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/137598962 SP50 V4 Half Opened. You should extend the graph to include stable trends which you have in raw data. Other than that, everything should be ready for report writing.]]> 2016-11-15 02:18:05 UTC https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/137598962 group Wong pressure P practical 4 at PB120% khairulanwar862 https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/137601260 I just realized your PV stay at 50%. I think your team forgot to change it to auto mode after manual adjustment]]> 2016-11-15 02:39:38 UTC https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/137601260 group Syeedah khairulanwar862 https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/137601595 you may proceed with report writing for other practical pressure P and amend necessary changes as stated before. Check previous Padlet comment for your group. ]]> 2016-11-15 02:42:20 UTC https://padlet.com/khairulanwar862/rkne2uuz44wc/wish/137601595