1. LabVIEW Based Embedded Design
Sadia Malik
Ram Rajagopal

2. LabVIEW
Dataflow based graphical development environment, developed by National Instruments.
Targeted towards T&M and Automation (TMA) industries.
Allows the development of flexible, scalable, cost reduced TMA applications offering support for a variety of standard interfaces.
Recently, support for development of Hard Real Time systems was added (LabVIEW RT)

3. Objective of Project
The objective of this project is to propose a framework for using the LabVIEW RT software and hardware environment for embedded systems design. We will:
-Characterize and formalize the underlying model of computation, adapting it for embedded development;
-Design a state-of-the-art embedded motion control system;

4. G G is the MoC underlying LabVIEW A typical program :
G is a homogeneous, multidimensional, dynamic, structured dataflow language
Some other properties: Turing Complete, non-deterministic, composable

5. G and Other MoCs G can be modeled as: Process Networks (PN)
VIs are small processes
Finite data channels, and locals/globals
Integer Dataflow (IDF)
Integer Case structure (no fork/join)
Multidimensional tokens
Synchronous Dataflow (SDF)
Without case and data dependent loops=> G is SDF

6. Embedded Design Requirements
Desired requirements for embedded software specification and scheduling:
[1] Determinate and Sample Rate Consistent
[2] Complete Execution
[3] Bounded Execution
For G, we proved that:
[1] Always SR consistent (homogeneous).
Verify determinism at O(|actors|3).
[2] Always allows complete execution.
[3] Add max_count to while loops.

7. Next Generation Motion
Today:
- In system development, design/simulation and
implementation behaviors can differ
- Motion controllers are PID based closed systems
Proposal:
- Integrated design, simulation and implementation
- Motion control to the next level, flexible MIMO solution