VisSim/Analyze
Introduction
VisSim/Analyze lets you perform a frequency domain analysis of a VisSim model or subsystem. It helps answer the question... "Is this a stable system ?"
VisSim/Analyze approximates the dynamics of a nonlinear system by linearising the system about a specified operating point. Linearised systems can be represented in ABCD state space or transfer function form. With VisSim Analyze, you can easily access transfer function information, edit zeroes and poles and compute Nyquist, Bode and root locus plots.
You can then design a controller for a plant model by interactively editing compensator zeroes and poles, then observe their combined behavior in Bode and root locus plots. Once the desired responses are obtained, the pole placement controller block is simply inserted into a VisSim diagram.
The preliminary pole placement controller is then connected to a plant model creating a feedforward or a feedback control loop. A simulation is run in VisSim and the results of the simulation can be viewed easily in the form of plots. The stability of the closed loop system can then be determined using Nyquist plots.
VisSim/Analyze lets you analyse system models or their subsystems and obtain state-space representation and pole-zero locations for complex systems. When frequency domain analysis is required, VisSim/Analyze generates Bode, Nyquist, and root locus plots.