MATLAB Fault Analysis - "Continuous-time signals support faults only if its destinations are discrete" Error Command

I am trying to trigger a fault in MATLAB for my simulation, so I can get some disturbance in my current simulation outputs. However, it is not working and I am getting the following error:

Fault Inport block 'Fault_Analysis_FaultModel/output_fault/Fault Inport' is set to read/override invalid signal on the Outport number 1 of block 'Fault_Analysis/Current'.

Caused by:

• Target signal is a continuous-time signal. Continuous-time signals support faults only if its destinations are discrete.

At the moment, I have triggered a timed fault at 10 sec. How can I fix this issue? Is there another way I can achieve the same goal? Any support is much appreciated.

Answer 1

[MULI]

Hi Krishna,

I understand that you are getting an issue when you tried to trigger a fault using “Simulink Fault analyser”.

• “Simulink Fault analyser” restricts fault injection to discrete-time destinations, leading to errors when interacting with continuous-time components.
• To create a fault in your model you can use “Fault” block in simscape.
• “Fault” block allows you to represent an electrical fault as an instantaneous change in resistance which replicates both open-circuit and short-circuit fault behaviours. 

You can refer to the below link for more information and examples related to this block.

https://www.mathworks.com/help/releases/R2023b/sps/ref/fault.html