Recent content by Abdul Wali

hi, i am designing a fuzzy logic controller, i need to use a delay block for the change in error signal now i don't know that based on what factors should i choose the sampling time for this unit

@jim hardy as in the article he is comparing PID and IMC, so normally if u see the waveforms IMC response is better than PID but when i tune pid to the level where its response is even better than PID than the 80kv happens. else in normal condition, when the pid response is same as shown in the...

@Asymptotic on page 277 of the attached article look at the equation 7 and then on page 279 look at the Simulink model, from the equation it can be clearly seen that the E(s) is the input to the motor or output of the controller. but yeah it is E(s) not E(t). but still voltage...

@jim hardy and @Asymptotic One more question, can i call this output voltage of the controller as voltage consumption / Energy consumption of the controller?

@Asymptotic https://drive.google.com/open?id=0B9NQhKDld_D4SzZuN2xUZ2RXRlU output of pid

It could instead be referring to outputs from op amps forming an analog computer purpose-built to solve PID equations, although these days nearly all commercially available PID controllers are digital. Bottom line - increasing proportional gain increases output.@Asymptotic Actually, i am...

@jim hardy @Asymptotic Thanks for your replies. From some research and simulation analysis, i found the following information. "Increasing a forward path gain will increase controller output voltage and current and will try to accelerate the plant at a higher rate; the response will be...

hi, I read somewhere that if we increase the PID gains unnecessarily, it will cause more energy consumption of the controller and it will lead to noise and distortion in the practical. May someone please give me more explanation on this?? that how it lead to noise or distortion in practical??

Hi, when it comes to Transformer Oil testing, there are some parameters that we need to consider but i don't understand their definitions and i can't find their explanations online, so may someone please define these terms for me that what these terms actually mean? the terms are as follows...

@donpacino i got it. Just for general knowledge, in case if i want to select the fc for this filter so which of the following two concepts is correct? 1) check the value of the lowest decade cutoff frequency and then increase or move the corner frequency out until the noise is removed 2) check...

@donpacino thanks for your help. BTW the filter that we are talking about this is a high pass filter, right? and is it an analogue filter or digital filter? there are many types of filter active, passive etc. i want to know that this is actually what type of filter?

I have a question regarding the time delay margin. I know the definition of time delay margin now I want to know that for the stability of the system is it good to have large time delay margin or small time delay margin?

yeah, the problem is in the continuous domain but the place where I am stocked since some days and my main question is that how to choose the value of fb for the filter?? @donpacino and i think i explained the problem very clear in post #1.

@jim hardy Yes, this is the Bode plot that i want to achieve.

Dear @jim hardy No this is a different problem. the problem that posted yesterday was confusing and different, so please help with the solution of this problem if you can. the video that you sent me yesterday, i watched that and i don't think that can help me to solve this problem.