Rotational Speed Measurement Based on Avago ADNS-9800 Laser Mouse Sensor
Conference: PCIM Europe 2016 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
05/10/2016 - 05/12/2016 at Nürnberg, Deutschland
Proceedings: PCIM Europe 2016
Pages: 5Language: englishTyp: PDF
Personal VDE Members are entitled to a 10% discount on this title
Authors:
Liu, Cheng; Liu, Ji-Gou; Sun, Hui (ChenYang Technologies GmbH & Co. KG, Markt Schwabener Str. 8, 85464 Finsing, Germany)
Xu, Yanan (ChenYang Technologies GmbH & Co. KG, Markt Schwabener Str. 8, 85464 Finsing, Germany & Institute for Electrical Drive Systems and Power Electronics, Technische Universität München, Arcisstr. 21, 80333 Munich, Germany)
Kennel, Ralph (Institute for Electrical Drive Systems and Power Electronics, Technische Universität München, Arcisstr. 21, 80333 Munich, Germany)
Abstract:
In this paper, a rotational speed measuring system is proposed on the basis of a laser mouse sensor. The rotational speed of a motor can be determined by measuring the air gap change of a target disc mounted on the motor shaft with the laser mouse sensor ADNS-9800 of Avago / PixArt. By applying a Fast Fourier Transform algorithm, the fundamental frequency of the sampled data from the sensor can be extracted, which is directly proportional to the rotational speed. With this method, a measuring accuracy of 0.5% in speed range from 50 RPM to 6000 RPM can be achieved.