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Hello: I'm new to the group and I'm starting on my first real-time control project.
LabVIEW Real Time and Modicon PLCs are candidates for my project, with some in-house programming talent in each. LabVIEW is used in our company in some data acquisition applications, and Modicon PLCs are used in some control applications.
What is experience with LabVIEW RT in critical control applications?
Some aspects of my application are:
- Fuzzy logic control may be used.
- Occasional tuning and algorithm changes may be done by users (casual/infrequent programmers). I think this would favor LabVIEW.
- High reliability/fault tolerance is important. Some of our PLC applications have 2 out of 3 voting or analog middle value selection is used.
- Input data is analog over a wide-area network at 30 samples/second. The number of input channels is modest (100-200).
- Output will cause discrete, feedforward control action.
- It's basically one of a kind implementation. Cost from hardware/software vendor is not critical compared to development cost, reliability, maintainability and ease of change.
I think a PC solution may offer more flexibility and sophistication in the algorithms, and LabVIEW has a lot of capabilities in signal processing,
filtering, linear algebra, etc.
Does anyone have experience with fuzzy logic tools in either LabVIEW or PLC?
Carson Taylor
Bonneville Power Administration
LabVIEW Real Time and Modicon PLCs are candidates for my project, with some in-house programming talent in each. LabVIEW is used in our company in some data acquisition applications, and Modicon PLCs are used in some control applications.
What is experience with LabVIEW RT in critical control applications?
Some aspects of my application are:
- Fuzzy logic control may be used.
- Occasional tuning and algorithm changes may be done by users (casual/infrequent programmers). I think this would favor LabVIEW.
- High reliability/fault tolerance is important. Some of our PLC applications have 2 out of 3 voting or analog middle value selection is used.
- Input data is analog over a wide-area network at 30 samples/second. The number of input channels is modest (100-200).
- Output will cause discrete, feedforward control action.
- It's basically one of a kind implementation. Cost from hardware/software vendor is not critical compared to development cost, reliability, maintainability and ease of change.
I think a PC solution may offer more flexibility and sophistication in the algorithms, and LabVIEW has a lot of capabilities in signal processing,
filtering, linear algebra, etc.
Does anyone have experience with fuzzy logic tools in either LabVIEW or PLC?
Carson Taylor
Bonneville Power Administration