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Transfer Function impelmentation

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smxx

smxx

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Hi
How we can implement a transfer function of a control system "H(S)" by a micro-controller.
I now that we have to transfer from "S" domain to "Z" and then to "difference Equation",:arrow:y(n)=a*y(n-T)+b*y(n-Kt)+...+x(n)".
that x(n) is the sample of input and y(n) is state of of system and T is the sampling time.
In micro-controller programing there is many "if",interrupt,and branching that shift the sampling time and real time calculation.
How we can solve this.
thanks
 

Usually, this operation have to be done by library written on assembler and provided by mcu's vendor. It uses ARM core for full power.
 
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    smxx

    smxx

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Dear Easyrider83
my question is about branching for ex. display /keyboard /port communication that
destroy "real time" programming
thanks
 

smxx said:
Dear Easyrider83
my question is about branching for ex. display /keyboard /port communication that
destroy "real time" programming
thanks
Click to expand...

You need to study timers and interrupts and real-time programming. Even quite small MCUs give you the tools for achieving this in general so long as it has enough processing overall (plus some margin).

The bottom line is that you need a timer driving an interrupt that calls your data acquisition/processing routine.
 

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