Latest design and simulation module for LabVIEW

30 April 2008 Design Automation

National Instruments has released the NI LabVIEW 8.5 Control Design and Simulation Module, an extension of the LabVIEW graphical system design platform that helps engineers and scientists analyse open-loop model behaviour, design closed-loop controllers, simulate systems and create realtime implementations. The latest version of the module introduces new design features such as analytical proportional integral derivative (PID) for improving system closed-loop stability and model predictive control to multivariable systems. The LabVIEW Control Design and Simulation Module also offers expanded support of LabVIEW MathScript with the addition of 18 new .m file functions to simplify such tasks as creating models, defining how models are connected and analysing system stability.

A new time-saving feature in the module is analytical PID capability. Historically, engineers and scientists have identified the proper PID controller gain values by experimentally tuning their controllers. The analytical PID feature provides engineers and scientists with functions to find sets of PID gain values automatically for a given system model, making it easy for them to avoid undesired behaviour at design time and improve system stability.

The latest version of the module also includes model predictive control (MPC), a popular algorithm used in industry to control multiple input, multiple output (MIMO) systems in complex process control applications. Engineers and scientists can use the MPC feature to construct controllers that adjust the control action before a change in the output setpoint actually occurs. This ability to predict model behaviour, combined with traditional feedback, helps the controller make smoother adjustments that are closer to the optimal control action values.

For more information contact National Instruments, +27 (0)800 203 199, [email protected], www.ni.com/southafrica

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