Page 736 - ExtendSim User Guide
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710 Math and Statistical Distributions
Integration vs. summation in the Holding Tank block
• Inmodelswithmorethanoneintegratingblock,wheretheintegratingblocksareinterdepen- dent or cross-coupled, the feedback between the blocks is usually a correction factor. If this feedback is delayed, the system may correct too late or overcorrect, causing the model results to become unstable. This is often observed as a graph where the traces oscillate with increasing magnitude as time progresses. The integrated (no delay) choice compensates for the feedback delays by outputting results one step earlier. For example, the Preda- tor_Prey model discussed on page 76 is an example of interdependent Holding Tank blocks.
How To

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