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Question: StepProperties returning endefined, StepResponsePlot should be built in to DynamicSystems package.

Question:StepProperties returning endefined, StepResponsePlot should be built in to DynamicSystems package.

gkokovidis 2335 Maple
dynamicsystems discrete-step-response
February 22 2020
0

I am trying to recreate an example,  See attached worksheet below.  I can't figure out what I am doing wrong here.  I have tried using the command StepProperties on other discrete transfer functions, without any problems.  Having a function that plots the Step Response of a system, Continuous or Discrete, should be built in.


 

Trying to recreate step response of discrete time system as in this example below:

 

https://www.mathworks.com/help/control/examples/creating-discrete-time-models.html

 

> 

restart:with(DynamicSystems):interface(version);

`Standard Worksheet Interface, Maple 2019.2, Windows 7, November 26 2019 Build ID 1435526`

 (1)
> 

 

> 

sysz:=TransferFunction((z-1)/(z^2-1.85*z+0.9),discrete,sampletime=0.1);

"module() ... end module"

 (2)
> 

propz:=StepProperties(sysz);

HFloat(0.0), [undefined, undefined], [undefined, undefined], [undefined, undefined], [undefined, undefined], [undefined, undefined], [undefined, undefined]

 (3)
> 

 

> 

 


 

Download DiscreteStepResponseError.mw

Regards,

Georgios
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