Combined Approach Helping to Reduce Periodic Disturbances in Speed Measuring

Ettler, Pavel; Puchr, Ivan; Ŝtika, Jirí

doi:10.3182/20100826-3-tr-4016.00032

Cited by 3 publications

(1 citation statement)

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“…This method is based on the incremental rotary encoder's properties. For detailed description see (Ettler et al, 2010). These methods are processed in parallel, and in this selected time period, a combination of the second and the third method is selected as the result.…”

Section: Pilot Applicationmentioning

confidence: 99%

Signal Pre-Processing Subsystem for the Purpose of Industrial Control

Puchr¹,

Herout

2011

Proceedings of the 8th International Conference on Informatics in Control, Automation and Robotics

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Commonly used methods of signal processing are often too complex and many of them induce time delay between the original and processed signal. A problem arises how to supply the controller with quality input signals without substantial delay taking limited computing power of the controller's hardware into account. A possible solution based on a signal pre-processing subsystem (SPS) delivering quality input signals to the controller is described in this paper. Concept of the SPS is based on a hardware unit with a real-time operating system managing a composition of application tasks. Hardware and software structure of the SPS is composed to enable to utilize the following specific signal processing strategy. Different signal processing methods process a particular signal simultaneously and an algorithm of continuous decision making provides the momentary best possible result in the form of a weighted combination of outputs generated by single signal processing methods. Solution is intended for enhancement of the automatic thickness/gauge control (AGC) for cold rolling mills.

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Section: Pilot Applicationmentioning

confidence: 99%