VisSim/Analyze
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 linearizing the system about a specified
operating point. Linearized 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 analyze 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.
VisSim/Analyze also features a compensator
design capability that allows you to interactively design feedback
control systems. You edit the poles and zeros of the compensator
transfer function in a floating window. In return, VisSim/Analyze
automatically updates the Bode and root locus plots of the combined
plant-compensator system to reflect the effects of the pole and zero
manipulation. Once you attain the desired response characteristics,
you can place the compensator in the VisSim diagram.
Features
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Approximates the dynamics of a nonlinear
system by linearizing the system about a specific operating point
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ABCD state-space matrix form (screen
display or .M/.MAT file exportation)
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Numerical perturbation for creating SISO
ABCD state-space linearization
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Calculates transfer function information,
including numerator and denominator polynomials in the powers of
the s-plane; gain, zeros, and poles locator; and cleansing of
numerical round-off errors
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Computes Bode phase/magnitude, root
locus, and Nyquist plots
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Interactive compensator design
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