Part 5: Converting Dynamic System Models to Control Design Models (Advanced Signal Processing Toolkit or Control Design and Simulation Module)

If you want to design controllers for a dynamic system, you must convert the dynamic system model you identified to a system model that you can use in the LabVIEW Control Design and Simulation Module. For example, you can use the Control Design and Simulation Module to design controllers for this DC servomotor to control the behaviors of this DC servomotor.

You also can use the Control Design and Simulation Module to complete the following tasks:

• Construct plants and control models
• Analyze dynamic system performance
• Simulate dynamic systems with a wide option of solvers
• Deploy dynamic systems to real-time hardware

Complete the following steps to convert a dynamic system model to a control design model.

1. Add the SI Convert to Models of CDT VI to the block diagram of the VI you created.
   
   Add 
   
   
2. Select a proper instance of this polymorphic VI.
   • MIMO TF—Select this instance to convert a transfer function dynamic system model.
   • MIMO SS—Select this instance to convert a state-space dynamic system model.
3. Create a constant for the realization type input of the SI Convert to Models of CDT VI.
4. Set the realization type constant to full.
5. Wire the system model out output of the following VIs or Express VIs to the system model input of the SI Convert to Models of CDT VI.
   • SI Estimate State-Space Model VI
   • SI Estimate Transfer Function Model VI
   • SI Model Estimation Express VI
   • SI Transfer Function Estimation Express VI
6. Create an indicator for the transfer function model or state-space model output of the SI Convert to Models of CDT VI. The following figure shows the block diagram.
   

   

7. Wire all error in and error out terminals on the block diagram.
8. Run this VI to convert the dynamic system model.
9. Save the resulting model.

The following figure shows the resulting dynamic system model.

Note  If you have the Control Design and Simulation Module installed, you can wire the resulting model to the Control Design VIs and Functions or the Simulation VIs and Functions.