How to find Kp,Ki of PI Controller from Gain and Time constant ?

Hello ! I have a PSIM circuit model where for the PI Controller Gain and Time constant values are mentioned. I would like to use the same values with Matlab PI controller where input is...

13 January 2021 6,066 7 View

Simscape Linearization Error | frestimate(modelname,op,io,in) ?

Hello ! When tried to linearize the model for Bode plot in matlab getting the following error. In "frestimate(modelname,op,io,in)", it is required for each of the linearization input I/O...

08 December 2020 4,598 1 View

Battery SOC increasing even with Circuit Breaker Open - Reason for this in Matlab Simulation ?

I have noticed my battery SOC keep on increasing even before I close the switch between Constant current source and battery ! Any idea why this is happening ? Tried manually deleting the...

03 November 2020 9,241 9 View

PI Controller - Control transfer from on to other. Looking for a efficient method ?

I have two PI controller running in parallel both controls the same output variable, based predefined input conditions I would like to transfer control from Control A to Control B without any...

21 October 2020 1,717 5 View

How to plot efficiency curve of dc-dc converter ?

Dealing with LLC resonant converter simulation and would like to plot the efficiency curve. How Can I do that ? eff = Pout/Pin ( Pout I can calculate from Output voltage and current but input...

18 October 2020 5,210 4 View

How can we decide the frequency range for approximation to be used for a Fractional order PID controller used in a power electronic converter?

Hi, I am not clear as to how to decide the frequency range required for the approximation of a FOPID controller used to control a power electronic converter. Can anyone suggest some papers which...

27 March 2020 1,454 2 View

Matlab method to find anomaly in time series data with two variable ?

Hi I have a large time series with two variables ( In reality more dependent variable, but now focusing on only two) in which variable2 is dependent on variable1. Algorithm need to identify...

25 February 2020 7,957 3 View

Show Eye Mask with Matlab Eye Diagram ?

Hi, I am trying to generate eye diagram for a particular signal along with defined Eye mask. But cannot find any reference for how to integrate Eye Mask along with Matlab Eye Diagram Object ? Any...

22 January 2020 1,766 2 View

Decode Flexray Physical Layer Signal to Binary in Matlab ?

Hi I was going through different methods to implement serial decoding for Flexray analogue electrical signal using Matlab. Any Suggestion or useful reference much appropriated ! Reference...

05 December 2019 3,282 3 View

Signal similarity analysis after cross correlation ?

I have a reference time series and main data set(Similar sampling rate) which contains multiple instance of reference signal. Applying Cross Correlation (xcorr - Matlab) and from the highest...

07 November 2019 1,608 3 View

Help request in CST microwave?

im working now on TPV solar cells and metamaterials and i realy need our help in CST microwave i have a tpv cell simulation and i want to extract particullarly the absorbtion of only the active...

02 March 2021 2,246 2 View

Does the circuit modeling for planar monopole antennas using Foster canonical forms give good approximation?

Hi researchers, I am searching for some accurate way to do the circuit modeling of planar CPW-fed monopole antennas. I have gone through the literature where mostly circuit modeling is done using...

28 February 2021 7,016 1 View

What is Flat Lens Antenna?

28 February 2021 5,433 3 View

Compact antenna for the frequency range 1 MHz-5 MHz?

Hello everybody! I have a problem with developing a compact antenna for the 1MHz-5MHz frequency range. Tell me what type of antenna can be used and what books and articles to read to perform this...

27 February 2021 7,710 4 View

Can impedance of antenna be less than 50 ohms?

I am simulating helix antenna in hfss, right now, giving excitation with 50 ohms port. When I see the results of Z parameter (real). It shows lower than 50 ohms. Do not understand, if it can be...

27 February 2021 4,218 7 View

Is there a way to use waveguide ports for circular antenna design in CST?

Hi, whenever i use circular array i get this error "Waveguide ports must be aligned with Cartesian coordinate planes for the transient solver" Does anyone use circular array with waveguide ports?...

09 February 2021 3,609 8 View

How to model in HFSS or FEKO Free Space Material Characterization?

I am having trouble setting up this problem in HFSS or FEKO. In HFSS, I've tried both FEM and FEBI-IE solvers. With FEKO, I've tried it's MoM solver and default settings. I am would like model...

09 February 2021 375 2 View

What is best solution for optical metamaterial design calculation: HFSS, COMSOL, CST?

Dear all, Now I'm selecting FEM for design of metamaterials on NIR~VIS frequencies, and keeping 3 software: ANSYS HFSS, COMSOL with wave optics module, and CST STUDIO SUITE. Could you give me...

09 February 2021 9,517 2 View

Which journals (Q1,Q2) accept simulation based design and results of antenna if fabrication and testing facility is not available?

I need a list of good (preferably Q1,Q2) journals that will accept research papers prepared on designs done with the help of simulation software e.g CST, HFSS etc.

08 February 2021 9,636 5 View

Sound transmission loss (Acoustic Metamaterial)?

My design contains three parts. A silicon rubber membrane is placed between upper and lower part. I want to calculate sound transmission loss by using comsol Multiphysic. There are lots of...

05 February 2021 466 4 View