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The most recent discussions

Peter Ponders PID YouTube Channel


July 22, 2017, 7:21 pm

https://www.youtube.com/user/pnachtwey The name sounds basic but I am actually targeting control professionals and those with math skills to understand the math behind the control theory. This ch... Read more »

Mapping positive definite matrix through a similarity transformation


May 25, 2017, 10:17 pm

Hello all, This is my first post on the group. I'm hoping that the group can help me b etter understand something. I'm designing a feedback controller with LQR in Matlab. My LTI model (A,B,C an ... Read more »

New Video: Implementing the PID Controller in Software


September 8, 2016, 2:13 am

https://www.youtube.com/watch?v=JVqJ7uRGwoA -- Tim Wescott Control systems, embedded software and circuit design I'm looking for work! See my website if you're interested http://www.wescottdes... Read more »

Being an electrical engineer come new here and asking something.


August 31, 2016, 11:26 am

Greetings to all, I am new here. I am an electrical engineer. I had been using siemens products(s7 s5 wincc ) for over ten years. Recently, I found this group and joined in. It seems that it is PID ... Read more »

Learning Root Locus is Useless ( well almost, but I have never used it. )


August 21, 2016, 2:10 am

My videos will concentrate on what people need to know using the tools taht are available today. I despise the propagation of old techniques like Z-N . They are a waste of time and misleading. ... Read more »

Video: What is a PID Controller?

  [ 2 ]
May 4, 2016, 9:48 pm

Just posted a video. It's my first real effort and, as videos go, rough as a cob -- but I think the information is solid. I have a 15-minute time limit -- trying to fit an informative video into ... Read more »

Got SHITmadzu in your lab?


May 13, 2015, 1:08 pm

Working with a group in another lab who are using Shimadzu HPLC... what a freaking nightmare! Equipment doesn't work and Shimadzu service doesn't work either.... constantly down or broken! Reminde... Read more »

Shameless plug -- control systems talk in San Jose, September 14th-18th


April 23, 2015, 6:26 pm

In case anyone has been dying to attend one of my talks (or send an associate), I'm now hooked up with a company that presents seminars. Basically, they do all the work that I absolutely dreaded... Read more »

A general observation about controls


April 17, 2015, 5:18 pm

Why does it seem like control theory texts go out of their way to obfuscate things? From naked observer bias, it seems like most stuff you can apply controls to is much more linear than not. Sy... Read more »

Adaptive PIDF under closed-loop


March 28, 2015, 10:56 am

Hi guys I know this not quite by the book of control theory, but i am looking into ways to implement an adaptive system onto my PIDF. Lets say (theoretical) that we dont have equations of state, hen... Read more »

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The best rated discussions

single-phase alpha-beta / dq transformation

rating: 5

Hello everyone. I am currently working on a single phase converter and need a to controll the current. In my struggle to design the control-system I have found out that it would become much easier ... Read more »

1747-PIC ALLEN BRADLEY ERROR

rating: 5

I am using RSLOGIX with Windows 98. I had no problem for the last several weeks communicating with our SLC500 equipment, until today... I hook up the laptop to the SLC500 via a 1747-PIC. When I do ... Read more »

Question (from a layman) about torque

rating: 5
  [ 2 ]

I recently used a surplus windshield wiper motor in a drum coffee roaster application. The drum has an 11 inch diameter, and the motor can reliably do about 5 pounds of coffee beans. It's coupled wit... Read more »

Advantages & Disadvantage of SCADA system?

rating: 5
  [ 2 ]

Any body please tell me briefly what are the Advantages & Disadvantage of SCADA system? in practical world?. best regards, Rizwan Read more »

Need Omron S3D manual

rating: 5

I need a manual or any other documentation on using the Omron S3D/S3D-P Sensor Controller and programmer. I can't seem to find much info at all on the web on these items. Can someone lead me to a d... Read more »

Where to put valve limit switches

rating: 4.67

I am doing an automation upgrade to a steam superheater at our gas plant. Upgrading from pneumatic control and hard wire logic to DCS and PLC. I have a question about opinions on where to put valve... Read more »

Foundation Fieldbus Microcontrollers

rating: 5

Hi Everybody, I am trying to build a positioner with Foundation Fieldbus support. The system architecture would consist of: a. Analog In (4 - 20 mA for position set-point input in manual mode). b. An... Read more »

Generating "Random" values in PLC-5/SLC500

rating: 5

Anybody have a clever way of doing this? I have been using a maximal length ring counter to create 65536 pseudo random steps, which is about all you can expect, but I wonder if there is a more clev... Read more »

Converting Ladder Diagram to Structured text

rating: 4.5

I want to convert a Ladder Diagram to Structured text. Does anyone know if there is a tool or program to do this automatically? Read more »

Temperature control

rating: 5
  [ 2 ]

Hi guys. I am new to control area. I have got a task. There is room with central heating, fancoil, ventilation, warm floor, one window, one door. And I have to develop system that would be able to ke... Read more »

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