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

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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.
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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.

lloydmalecaut
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How we create cot trigonometric block in simulink?

thesparkingwire
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What is expansion of subsystem please explain in detail

sopanwagh
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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

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

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

guilhermeferrari
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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

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

sunilsuyal
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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??

rohangujar
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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!

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

nivenk
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in model properties how xinitial and xfinal positive reply

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

Mohammad-bbes
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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

renjithshenoi
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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

anhnsgk