PSpice Application Notes

PSpice App Note_Analog Behavioral Modeling

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APPLICATION NOTE 10 Sets of equations like this can be solved using similar techniques to the first problem. In this example, we would use three integrators with three feedback loops and three node voltages to solve for x1, x2, and x3. Let's look at a real example. This is a chemical system which contains four components, x1, x2, x3, and x4. They are related by four equations containing "rate constants" (the Ks) and "physical constants" (R and Q): A schematic containing ABM components for integration, summing, and taking square roots, etc., is shown in Figure 13. It also contains definitions for Q and R (the physical constants), and the Ks.

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