VisSim/ModelWizard – Add-On

VisSim/ModelWizard is a Windows®-based software program for developing high fidelity, dynamic models of process plant subsystems or components from real-time plant and historic data. Using VisSim/ModelWizard, process control engineers and technicians can easily create models for tuning controllers without spending days or weeks developing the models.

VisSim Model Wizard screen shot

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The product consists of a simple wizard interface combined with a set of sophisticated algorithms. The underlying algorithms identify the key frequencies of a system, even in the presence of noise, and generate a mathematical model of optimal order, or alternatively, of an order specified by the user. The software is designed to produce models for single input/single output (SISO) systems and is particularly well-suited for PID controlled systems. These models can be easily configured with other VisSim blocks (for example, PID control blocks) to perform process simulation, off-line tuning (optimization) or operator training.

With VisSim/ModelWizard, generating models is simple. The wizard interface guides you through an easy four step process then automatically produces a VisSim transfer function block that represents the system. You can then connect pre-configured VisSim PI, PD or PID blocks to the transfer function block to create, simulate and tune the control system.

VisSim Model Wizard chart

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Used in conjunction with VisSim/OptimizePRO™, a VisSim product option, VisSim/ModelWizard lets you automatically calculate optimal PID controller gains relative to user-defined parameters such as rise-time, settling-time, overshoot and steady-state error.

 

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