Simulink Tutorial - 11 - Types of Solver - Variable & Fixed Step

Video explains variable and fixed step solver. It also explains how ti take inputs from excel sheet and access data in simulink. The video shows how outputs of system differ using different solvers.

[@lloydmalecaut1769]

Solution to problem 'undefined reference to t ...' . I will echo the solution provided by an earlier commenter 'Stip Kafle', when importing the excel sheet you will notice a drop down menu in the top left corner titled 'Output type', you must specify the type as column vectors. You will now see that t and u are imported as seperate variables into the workspace and are therefore defined.

[@rohangujar3655]

External input specified in the Configuration Parameters dialog box on the Data Import/Export page (or as an option to SIM command) to a model containing no root level input ports what does this mean

[@kwetisamuel5232]

Many thanks for this video

[@sunilsuyal6985]

HI,Can you make a vidoe on fixed point system scaling ? Why we need to do scaling and how to do it?

[@farzanehsalehi4963]

Thank you

[@uditsaxena3844]

Thanks

[@mukundabhalke2323]

good explanation

[@renjithshenoi7777]

I have uploaded the excel and made changes in configuration parameters for data import and export and executed the model. Showing error as t is not defined. What can be done

[@thesparkingwire]

How we create cot trigonometric block in simulink?

[@sopanwagh9561]

What is expansion of subsystem please explain in detail

[@Pooh_Piglet]

Will u able to help us in our project using matlab and simulink ?

[@magyarikristof]

Thank you for the video! Can you help me a little bit please? After I close Matlab along with Simulink, then reopening, Simulink cannot seem to find pre-defined variables (e.g. t; u). How can I relate them to each other? Thank you!

[@simulinktutorial9086]

+magyarikristof when you reopen the model, you need to import data manually as shown in the video. If you want to avoid that then add the load command for datasheet in callbacks. So every time you open the model the datasheet data is loaded in the workspace

[@sameergdk1]

you can write load command to load the data automatically.

[@prashanthu493]

@@sameergdk1 you load by adding it to the pre-load function

[@rohangujar3655]

in below error t is column matrix

[@Asharamkumhar]

in model properties how xinitial and xfinal works................hope positive reply

[@Mohammad-bb7es]

Hii It's showing error loading input data into root-level inport

[@gopalkamble6525]

How check vector data where is

[@guilhermeferrari2562]

Hello, how do I input a series of values on simulink?

[@jaisiyaram2034]

csv import , mat file , or creation of vecctor in workspace.. as long as variable is visible in workspace it will be considered for simulation

[@nivenk8536]

Why input given needs to be column matrix ? Why not row matrix what is the reason behind?

[@simulinktutorial9086]

Just as an exercise try to give it as a row matrix and simulate and check if it simulates

[@sadiq114]

Dear Simulink Tutorial your videos are very step-by-step as one wants. I liked it and I learn a lot. But I noticed one thing in this video that brings me some confusion. And that is that in your initial time data in Excel file, you have written 0.4 twice. Why? I thought very much but in vain. Is it some typos or you intentionally kept it like that. And if you did it intentionally, then how will we know that where should we repeat this time data?

[@renjithshenoi7777]

Error evaluating expression '[t, u]' for 'ExternalInput' specified in the Configuration Parameters dialog for block diagram 'untitled': Undefined function or variable 't'. Component: Simulink | Category: Model error Error evaluating external inputs specified in the Configuration Parameters dialog on the Data Import/Export Page. External inputs may be specified as either (a) a list of matrices, structures or timeseries or (b) a single MATLAB expression or function

[@simulinktutorial9086]

+Renjith Shenoi t should be column matrix

[@kiranbs5057]

@@simulinktutorial9086 It is column matrix max ....Did same thing like u did in the tutorial video

[@rohangujar3655]

Error evaluating expression '[t, u]' for 'ExternalInput' specified in the Configuration Parameters dialog for block diagram 'untitled'. Caused by: Undefined function or variable 't'. where should be the function defined??

[@stipkafle4642]

While Importing data from spreadsheet,when spreadsheet windows pop up then in upper left corner there appears 'output data type' just change it to column type.

[@ashishkumargautam4751]

@@stipkafle4642 thank you

[@kiranbs5057]

@@stipkafle4642 Thank You . It's Working

[@watchout2entertain992]

fuction of powerGui

[@pramodtony5491]

pse reply fast

[@anhnsgk45830]

Ur statements are contradicting. Once u r telling that variable step will not respond to zero crossing and at the same time, u say that fixed step will not respond to zero crossing