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mfile version of Simulink integrator
This should get you started: http://en.wikipedia.org/wiki/Bogacki%E2%80%93Shampine_method You might also be interested to ...

12 years ago | 0

Answered
What is the difference between using Data Store Blocks & Delay block to avoid algebraic loop error
The performance is the same and both options are computationally equivalent. In my opinion here what should guide your choice is...

12 years ago | 0

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Why you should use the Function-Call Split block
Today I had a good discussion with a user regarding the Function-Call Split block introduced in R2010a. On one side, the...

12 years ago

Answered
find_system versus Simulink.findVars
Simulink.findVars returns a list of simulink.variableusage objects. http://www.mathworks.com/help/simulink/slref/simulink.var...

12 years ago | 0

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Quickly Switching Model Configuration Sets
During the life of a model, you will very likely need to change many configuration parameters to complete different tasks....

12 years ago

Answered
changing matrix dimension in simulink circuit gives an error....
Specify the dimensions of the ports of the MATLAB function blocks... it will help the engine to propagate the correct dimensions...

12 years ago | 0

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continuous integrator vs discrete-time integrator
What you observe is expected. Different blocks... different results ;-) Use Scope blocks to understand the evolution. As y...

12 years ago | 0

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Answered
Systematically pause Simulink model and continue from Matlab command line
In most cases where I have seen users asking to control the execution of a model from MATLAB code, the most appropriate solution...

12 years ago | 0

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MATLAB Tech Talks: Bode Plot
This week we are introducing MATLAB Tech Talks - short videos explaining important engineering concepts in an informal and...

12 years ago

Published

Defining custom shortcuts in Simulink
On this blog, I sometimes highlight features that it took me a while to appreciate and include in my daily workflow. I...

12 years ago

Published

The Easiest Way to Import Signals Into Your Model
A benefit of Model-Based Design is using the same model to accomplish several tasks: tuning, testing, debugging, combining...

12 years ago

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Inverse Dynamics is SimMechanics
SimMechanics First Generation can handle inverse dynamics (specifying motion and measure force/torques). Since R2012a, SimMe...

12 years ago | 0

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Answered
How to measure force in SimMechanics second generation?
This is not directly possible in R2013a. We are working on that for a future release. As a workaround, you can actuate the de...

12 years ago | 0

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Understanding the rate transition block in realtime windows target
The "scheduling" chapter of he Simulink Coder documentation will explain you how to control ow the execution of a slow task can ...

12 years ago | 0

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Published

Model Explorer or Command Line?
Today I would like to ask you a question. This week I received a large model where I wanted to find all the Lookup Table...

12 years ago

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Can I modify how a native Simulink block is auto-coded?
The Code Replacement Library seems to be what you are looking for. See this example: http://www.mathworks.com/help/coder/exam...

12 years ago | 0

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Answered
Supported Matlab Functions in Simulink
Use coder.extrinsic if you do not need to generate code.

12 years ago | 0

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Configuring Models for Linear Analysis
One of the benefits of Model-Based Design is the ability to perform linear analysis on your non-linear model and design...

12 years ago

Published

Sum Block: Round or Rectangular?
Working in technical support, I see a lot of Simulink models from users. I have realized that many users do not know how to,...

13 years ago

Answered
Simulink Problem: Derivative input is Inf
Use the Simulink debugger to identify where the Inf or NaN originates. There is a "NaN" breakpoint.

13 years ago | 1

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Answered
How to pass from [1x1] to single signal 1 in Simulink?
To go from [1x1] to 1 and vice-versa, use the Reshape block: http://www.mathworks.com/help/simulink/slref/reshape.html To...

13 years ago | 0

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Answered
Is there any way to disable code generation in Simulink
Wrap your whole script in a separate MATLAB-file and make it extrinsic so that your MATLAB Function code look like: %%% func...

13 years ago | 6

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Answered
How to decatenate or discatenate (opposite of concatenate) a vector in simulink?
Use the Selector block

13 years ago | 0

Published

Comparing Runs using Simulation Data Inspector
Do you use the Simulation Data Inspector? Here is an example where it saved me a lot of debugging time. Simulation...

13 years ago

Published

Zero-Crossing Detection… what are your options?
When using Simulink variable-step solvers, zero-crossing detection is very useful to capture events accurately. However for...

13 years ago

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In a For Iterator Subsystem, how to use the iteration variable ?
The iteration variable is a signal coming out of the For Iterator block. Inside the subsystem, you can use a Selector block:...

13 years ago | 0

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Implementing a PID Controller on an Arduino Board
This week my colleague Pravallika is back to continue her motor control story! In my previous post, we saw how to estimate...

13 years ago

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Initial condition for Memory block with TRIM (Linear Analysis Tool)
The Memory block has an option "Direct feedthrough of input during linearization" if you do not want to initialize it during lin...

13 years ago | 0

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Pressure relief valve with proportional control
I recommend using a Pressure Sensor and the Variable Area Orifice. then write a Simscape component (or use blocks from the Physi...

13 years ago | 0

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linearising a non-linear plant model
It looks like you are in the right direction: - The System Identification Toolbox is the tool to identify the relation betwee...

13 years ago | 0

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