Latest threads in ⧑ Industrial Control Groupshow only best voted threads
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Bode plot Vs. Root Locus
Hi All, I am a bit confused between the stability of a second order system as predicted by Bode plots and by the Root Locus technique. I have a system with just two real overlapping poles at s=10 ,...
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17 years ago
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Boiler Drum Level Dynamic Simulation
I am looking for help to build a dynamic simulation of a boiler drum level. Issues that are important to capture include: - inverse response of the level to changes in drum pressure, steam flow,...
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17 years ago
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Parker ACR9000
Any one here used one before? Have build custom machines using the 6K series. Rep talked us into the ACR for this project.. Comments? st
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17 years ago
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MPC stability
Hello, I was just wondering: Can implementing MPC on a stable linear system, gives unstable closed loop behavior? In case of PID control, if we make PID more aggressive (increase Kc beyond some...
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17 years ago
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Nonlinear Observers
Hello, Is there any good book or paper on Nonlinear Observers? I have tried technical journals but all of them start with specific type of observer. I am new to nonlinear observers so want some basic...
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17 years ago
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valve limit switches recommended wiring in protection systems
We are working in a modification project on a chemical plant where we have to implement a logic for a protection system where we have valves limit switches involved. In the Hazop arised a question...
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17 years ago
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Integration methode
What is the consequence of using the often used integration method in control systems: Yn = Yn-1 + ki * Xn compared to the more precise: Yn = (Xn + Xn-1) dT / 2 + Yn-1 Thanks Ole
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17 years ago
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Do Not Model Disturbance Driven Data for Controller Tuning
A fairly common stumbling block for those new to controller tuning relates to step 2 of the controller design and tuning recipe. Step 2 says to "collect controller output (CO) to process variable (PV)...
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17 years ago
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cascade control
dear all Can anyone tell how to achieve bumpless transfer in cascade loops along with different modes the primary and secondary controllers are during execution. B/R Kiran
5
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17 years ago
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Dancer Speed follower circuit before i build one
Yes, these drives have all of those controls how ever, they do not correct for the problems totally. These pay off units use a catenary arm that has a short travel to them. If it wasn't for this short...
16
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17 years ago
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doubt
For continuous time linear systems, I use rung-kutta 4th order integration approach for analysis purpose with proper integral sampling. Can I adopt the same approach for real-time digital control...
7
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17 years ago
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Need for suggestions on studying ILC
I will take up the ILC research during my next 3 years, please give me some advice on the future, best reference books as well as the mathematical foundation required.
12
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17 years ago
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Custom PLC Programs Generated Automatically
Sorry if this seems like spam, but I need some people to test out a product I recently launched called The PLC Code Generator. It can generate an entire PLC program from simple input and output...
1
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17 years ago
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PID control of Batch process
Hello, I am a graduate student in process control field. I want to control batch process using PID controller. I want to apply PID on batch system to make it follow certain trajectory of controlled...
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17 years ago
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AB remote I/O
Using a PLC-5 with some 1794 remote i/o and have a question about the logic. The instructions BTR, BTW use a five word integer (N) data file for the Control Block. What does this Control Block...
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17 years ago
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