If a heater is controlled by turning it on and off, does a PID algorithm help in more closely controlling the temperature? Will running the...

If a heater is controlled by turning it on and off, does a PID algorithm help in more closely controlling the temperature? Will running the PID loop faster than the temperature measurement improve anything? How would a PID control be an improvement over a simple temperature comparison with or without an anticipator? -- Rick

As it said. We need to replace some analog PID boards due to supply and side effects the existing ones have. The PID code that comes in...

As it said. We need to replace some analog PID boards due to supply and side effects the existing ones have. The PID code that comes in digital drives and process controllers are pretty much what we're looking for how ever, we only need just a design that allows a input ref, reference feed back and a output to drive what ever device. This device should have it's own mini LCD inter...

What I want: A Autotuning for a servo control The Process: The control signal is the current of the motor. The motor has an encoder which is...

What I want: A Autotuning for a servo control The Process: The control signal is the current of the motor. The motor has an encoder which is used for the field oriented control and additionaly for position control. The control loop: there is one PID controler for the position control. The Encoder delivers the real position and the error is calculated and input to the PID. The PID outputs...

Yet another video on tuning PID controllers has been tossed into the YouTube pool. ? https://youtu.be/drYO60z6_h4 -- Tim...

Yet another video on tuning PID controllers has been tossed into the YouTube pool. ? https://youtu.be/drYO60z6_h4 -- Tim Wescott Wescott Design Services http://www.wescottdesign.com I'm looking for work -- see my website!

I have a program being ran every 20 milliseconds and I'm trying to implement PID control. So P = SetPoint - Actual, I = I + P ? , and D = P -...

I have a program being ran every 20 milliseconds and I'm trying to implement PID control. So P = SetPoint - Actual, I = I + P ? , and D = P - Old_P???? On D, should "Old_P" be from the previous round or should it be a value from a certain length of time ago? Also, is "I" just summed up or is it the sum of I over a certain length of time? I'm trying to find out if I need to set up a...

How about it? Experiments of the third kind , take 999999. Update Testing the temperature controller There has been some talk about PID...

How about it? Experiments of the third kind , take 999999. Update Testing the temperature controller There has been some talk about PID controllers to keep temperature constant. And I wanted to keep the 'D' out of the PID. After the melted box experiment (see early postings on this subject), I had some idea of the amount of power needed to keep the box with sensors at about 40C, and fr...

Hi, Can a partial differential equation be numerically calculated to give a function that is equivalent to a PID loop for controlling a...

Hi, Can a partial differential equation be numerically calculated to give a function that is equivalent to a PID loop for controlling a multivariable system (ie a lunar lander with yaw/pitch/thrust to land on a given X/Y coordinate from a given altitude)? Do partial differential equation solvers ie for the heat equation, also work for large numbers of variables, ie 10? Is this method ...

hi, this is pavan,presently i am dealing online ups project.In that i am usin pid and pfc fuctions. in pid i get problem in using...

hi, this is pavan,presently i am dealing online ups project.In that i am usin pid and pfc fuctions. in pid i get problem in using of compensators,any one please send me voltage compensator transfer fuction equation and current compensator transfer fuction equation.please send me breifly.........! regards, pavan ningala.

Hi guys/gals. A bit of a problem has caused me to revisit PID/ PI controll= ers and tuning. I have this nice paper on the Ziegler=96Nichols...

Hi guys/gals. A bit of a problem has caused me to revisit PID/ PI controll= ers and tuning. I have this nice paper on the Ziegler=96Nichols tuning me= thod that compares the closed loop period to the open loop step response of= the system. It then shows the closed loop step response for different tun= ing parameters. But I can=92t seem to lay my hands on it... grumble. I=92= ll keep se...

hi, this is pavan,presently i am dealing online ups project.In that i am using pid and pfc fuctions. in pid i get problem in using...

hi, this is pavan,presently i am dealing online ups project.In that i am using pid and pfc fuctions. in pid i get problem in using of compensators,any one please send me voltage compensator transfer fuction equation and current compensator transfer fuction equation. I have one equation............ Gv(s)=Kpv((1+Tco.S)/Tco.S) here Kpv=(2K2K3/K1Km)*(Vacmax/Vacmin)*(Vac...

Ran across this Magnetic paint at Home Depot the other day, just thought I'd make others...

Ran across this Magnetic paint at Home Depot the other day, just thought I'd make others aware. http://www.rustoleum.com/cbgproduct.asp?pid=127 Mikek

https://www.youtube.com/watch?v=JVqJ7uRGwoA -- Tim Wescott Control systems, embedded software and circuit design I'm looking for work! ...

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.wescottdesign.com

Embedded Systems Design (or whatever they call themselves) kept moving this around -- so I've revamped it, updated it, and posted it on the...

Embedded Systems Design (or whatever they call themselves) kept moving this around -- so I've revamped it, updated it, and posted it on the web. Take a gander. Please comment on anything you like/don't like. I'm not sure if the way that I'm setting off the math is a Really Good Idea or a Really Bad Idea -- I'm trying to make it easy for the math-averse to skip over it, without breakin...

We have some devices that have been in use for many years (not made by us). These are analog PID boards that employ a 324N chip. The...

We have some devices that have been in use for many years (not made by us). These are analog PID boards that employ a 324N chip. The circuit works very well and is very flexible in what it can do. THis is the problem. Lately been getting a few random failures of the op-amp. Today, one failed simply by turning one of the pots on the board that is in the feed back loop as the GAIN con...

type in this: 1 lakh indian rupees in USD (the price of Tata's new car) and it responds: 1 lakh Indian rupees = 2 547.2 U.S....

type in this: 1 lakh indian rupees in USD (the price of Tata's new car) and it responds: 1 lakh Indian rupees = 2 547.2 U.S. dollars http://www.bloomberg.com/apps/news?pid=20601091&sid=acHGVoFxur.Q&refer=india

We have a piece of equipment that has 2 optical potentiometers mounted on a process machine, which generates an oscillation effect up to 100...

We have a piece of equipment that has 2 optical potentiometers mounted on a process machine, which generates an oscillation effect up to 100 hz from the second pot. This causes the first Pot to also get effected by this movement. Thus, we needed to remove this oscillating component from the first pot so that the final PID loop wouldn't see this component, to regulate the position of th...

Imagine a mass that we want to heat with some closed-loop controller. It's C2 below. Voltage represents temperature. Thermal systems...

Imagine a mass that we want to heat with some closed-loop controller. It's C2 below. Voltage represents temperature. Thermal systems are diffusive, which we represent as a bunch of RC lags. Assume the voltage at C4 is the temperature sensor. If I were to design a PID controller, I'd have to really think about it, or fiddle some, to keep it stable. But if I do a dumb on/off thermostat, ...

Hi guys, I'm trying to measure resistance, current, and voltage of a resistor (heater) connected to a 0-24V @ 3A transformer. The heater's...

Hi guys, I'm trying to measure resistance, current, and voltage of a resistor (heater) connected to a 0-24V @ 3A transformer. The heater's consumption is actually 2A max., and I'd be controlling it with a triac driven with an 8-bit micro, which I'd also use to get the above readings and send them to the host. This is my initial layout: https://docs.google.com/viewer?a=v&pid=explorer...

I was trying to turn a previous SV filter into a notch, (Freq ~3.3 kHz, Q~10-20, see my mech. PID thread.) I was thinking of just subtracting...

I was trying to turn a previous SV filter into a notch, (Freq ~3.3 kHz, Q~10-20, see my mech. PID thread.) I was thinking of just subtracting the BP from the input. But almost all the web stuff I could find said add the HP and LP. (That seemed crazy to me, at high Q both those are peaking.. but then again the SV filter seems a bit crazy to me... two integraters in a row, come on. :^) S...

I know about the auto-tuning algorithm for PID: cycle the temperature up an= d down, measure the peaks and distance between the peaks, and...

I know about the auto-tuning algorithm for PID: cycle the temperature up an= d down, measure the peaks and distance between the peaks, and calculate Kp,= Ki, and Kd. =20 But recently I've been experimenting with what Phelan called PDF, and am in= trigued by it. There isn't a lot of information out there about it, but ne= arly everyone that's used it has good things to say. =20 The prob...