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What Is Simulation? 5

Posted by Guy Rouleau,

This week we are taking a break from Simulink features and capabilities to take a step back and look at the history of simulations.

What Is Simulation?

Sometimes it is good to take a step back and remember why we do simulations in the first place. What is simulation? What kind of problems can simulations help us solve? What kind of questions can simulations answer?

Who better to explain all that than a person who is not only a Simulink expert, but has also used simulations extensively for solving interesting and challenging engineering problems like designing a autopilot for Apollo Lunar Module and developing a digital flight control system for forward-swept wing X-29 aircraft. He even wrote a book titled Numerical Computing with Simulink!

Sit back and enjoy Dr. Richard Gran talking about about the history of simulation and how simulations help answer questions:


Now it's your turn

Let us know what you think about this video and if you would like to see more like that by leaving a comment here.

5 CommentsOldest to Newest

Prashant Panchal replied on : 2 of 5
An awesome tutor. Such a simple, understandable explanation for the question ,why we need simulation ?. I love it. Thanks for sharing this video.
Kevin replied on : 3 of 5
Mr. Rouleau Good day! I saw you in mathworks.com discussing about simulink in matlab I just thought if you can help me also. My problem is I want to make an image encryption using simulink in Matlab not only that you must also use chaotic maps like Tinkerbell map. I do not know where to start so please Mr. Rouleau help me. Thank you for your response
wei replied on : 4 of 5
@Guy, Could you turn off vidoe's autoplay? It's a nice talk given by Dr. Gran, but not most convenient to have it played every time when your site's is visited for another month.
Anusuya replied on : 5 of 5
Hi, I know this isn't the right place to ask this question. But I need your advice. I had designed an analog PLL using Hspice simulator. I was able to achieve desired capture range. But when I tried to design the same circuit using Simulink blocks, the capture range I got was very different. It is especially not sufficient in the low frequency region. Why do you think this is ? I calculated parameters of each PLL block designed in Hspice, like the LPF transfer function, Phase detector gain, VCO input sensitivity and VCO quiscent frequency and copied them in the Simulink blocks. Yet the capture range was very different. are there any specific configuration parameters that I need to change ? Please help