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Creating a 6DOF model in Matlab/Simulink

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Kaustubh Surdi
Kaustubh Surdi 2011-6-15
Hi guys, I am trying to create a 6DOF (spring-mass-damper) model in Matlab/Simulink, wherein I can first, generate different types of input excitation signals (burst random, chirp, etc.), then apply them on any DOFs and generate multiple responses. So basically a MIMO MDOF system. And then record the time histories generated for further processing. Please let me know if there is an easier way to do this. Also, how do you create a burst random signal in Matlab? Thanks.

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回答（2 个）

Fangjun Jiang
Fangjun Jiang 2011-6-15
How easy do you expect? It's not going to be as easy as a finger snap. But you are heading to the right direction. MATLAB and Simulink are the perfect tools for this task. You need to write down the mathematical equation of your sping-mass-damper system and build a Simulink model block by block. Then you can run simulations, plot responses, etc. The random signal and chirp signal are readily available in Simulink block library.
Kaustubh Surdi
Kaustubh Surdi 2011-6-15
I attended a Mathworks webinar on dynamic systems, where they talked about Simscape which can be used to develop these systems. I am new to Simscape but would like to know more about it. Would that be one of the ways to model the system? Thanks.
  2 个评论
Fangjun Jiang
Fangjun Jiang 2011-6-15
Yes, if you have the Simscape toolbox, then it would be easier to build the model. Instead of deriving a mathematical equation first, you just need to drag and drop those components, like spring, mass and damper. Just like you building up a lego blocks.
Arnaud Miege
Arnaud Miege 2011-6-15
You can also have a look at some of videos on the Simscape web page:
http://www.mathworks.co.uk/products/simscape/demos.html

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