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Control Design and Simulation Module Known Issues

Primary Software: LabVIEW Modules>>Simulation Module
Primary Software Version: 1.0
Primary Software Fixed Version: N/A
Secondary Software: LabVIEW Toolkits>>Control Design Toolkit, LabVIEW Toolkits>>System Identification Toolkit

Problem:
Are there any known issues with Control Design and Simulation Module 8.5?

Solution:
The following is a list of known issues for the Control Design and Simulation Module 8.5. See the readme for other known issues.

Installation order of LabVIEW, Control Design and Simulation Module and related products

As with all toolkits and modules, the version of LabVIEW to which you are installing the toolkit or module must be installed first. In the case of the products mentioned below, the Control Design and Simulation Module 8.5 must be installed after any previous versions of Control Design Toolkit, System Identification Toolkit and/or Simulation Module.

You must install these products in the following order:
  1. LabVIEW 8.2.x
  2. Control Design Toolkit 2.1.x, Simulation Module 8.2, System Identification Toolkit 3.0.x
  3. LabVIEW 8.5
  4. Control Design and Simulation Module 8.5
  5. Optional: System Identification Toolkit 3.0.x can be installed with LabVIEW 8.5. KnowledgeBase: 4B2AGDGH: Control Design Toolkit 2.1.2 cannot be installed after LabVIEW 8.5 is installed.

Missing error code descriptions

The error code file that ships with the Control Design and Simulation Module 8.5 is incomplete see KnowledgeBase 4BQB2E7G: Missing Error Code Descriptions for Control Design & Simulation Module 8.5 for more details.

Rosenbrock and BDF solver accuracy on LabVIEW Embedded targets

Computational accuracy of Rosenbrock and BDF solvers is not assured on LabVIEW Embedded targets. See KnowledgeBase 4BNDLR00: Rosenbrock and BDF Solvers Produce Incorrect Results on the ADI Blackfin for more details.

Discrete Transfer Function with SIM and CDT Datatype Have Different Results

Substitute the existing LLB in C:\Program Files\National Instruments\LabVIEW 8.5\vi.lib\Simulation\DiscreteLinear\Implementation\SIM Discrete Transfer Function Direct.llb with the one attached and mass compile the VI's running in LabVIEW.

Alternatively you can open the VI from C:\Program Files\National Instruments\LabVIEW 8.5\vi.lib\Simulation\DiscreteLinear\Implementation\SIM Discrete Transfer Function Direct.llb\SIM Discrete Transfer Function Diagram (SISO CD).vi and manually modify the terminals from State Derivatives (input and output) to States (input and output) as shown in the image below.



Related Links:

KnowledgeBase 4B2AGDGH: Control Design Toolkit 2.1.2 with LabVIEW 8.5

KnowledgeBase 4HE0PS1S: Issues with the Control Design Instance of the Discrete Transfer Function (SISO)
KnowledgeBase 33CBHOVS: Can I Convert a Continuous Transfer Function (TF) To a Discrete TF in LabVIEW?

Attachments:
SIM Discrete Transfer Function DirectSIM Discrete Transfer Function Direct.llb




Report Date: 07/11/2007
Last Updated: 04/27/2009
Document ID: 4BA8GRGH

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