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Rate limiter blocks? [message #1792597]

Fri, 20 July 2018 04:48

Rafi Zulfahmi

Messages: 5
Registered: May 2018

Junior Member

Dear all,

I work on some projects where i need to adapt some scheme from Matlab's simulink to 4DIAC's function blocks from.
But currently, i can't find some blocks that i need.

A blocks that i can't seems to find is some kind of rate limiter to limit the rate of changes of input signal to some value between a specified slew rate and fall rate. I only find some blocks that limits the value of input itself to some specified value
The second blocks that i can't find is a polynomial blocks, when i need to put some input signal to solve some polynomials.

Is these blocks available on the 4DIAC? I use 1.8.4 for now.

Thankyou.

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Re: Rate limiter blocks? [message #1792602 is a reply to message #1792597]

Fri, 20 July 2018 06:47

Martin Melik Merkumians

Messages: 117
Registered: March 2016

Senior Member

Hi Rafi,

no such FBs are not available afaik.

Best regards,
Martin

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Re: Rate limiter blocks? [message #1792728 is a reply to message #1792602]

Mon, 23 July 2018 09:50

Alois Zoitl

Messages: 1581
Registered: January 2014

Senior Member

but we are happy to add such to our library if you can provide them to us.

Also please if possible upate to the latest 4diac 1.9.1 (soon 1.9.2). 1.8.4 is now more then 1.5 years old.
Alois

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Re: Rate limiter blocks? [message #1792785 is a reply to message #1792728]

Tue, 24 July 2018 04:31

Rafi Zulfahmi

Messages: 5
Registered: May 2018

Junior Member

Thankyou for the answers Prof. Alois and mr . Martin

Here is the information about the library that i search https://www.mathworks.com/help/simulink/slref/ratelimiter.html
i'm very grateful if it can be added. I'll try to develop it too if i can

About the versions, I've installed the 1.9.1 before, but some of the libraries that i need is seemingly isn't available anymore (OSCAT) in the current versions, so i downgraded to 1.84.

[Updated on: Tue, 24 July 2018 04:32]

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Re: Rate limiter blocks? [message #1792787 is a reply to message #1792785]

Tue, 24 July 2018 05:32

Alois Zoitl

Messages: 1581
Registered: January 2014

Senior Member

Hi,

we are currently not sure how we'll proceed with OSCAT. But you can use the 1.8.4 OSCAT also in 1.9.x. You just need to copy the fbt files into your projet's typelib and to copy the FORTE module into the new forte.

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