Premium
Implementing an image based control algorithm for an optomechanical image derotator
Author(s) -
Altmann Bettina,
Pape Christian,
Reithmeier Eduard
Publication year - 2017
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201710358
Subject(s) - rotary encoder , controller (irrigation) , computer vision , position (finance) , computer science , tracking (education) , encoder , artificial intelligence , image (mathematics) , object (grammar) , range (aeronautics) , image processing , camera interface , digital image processing , engineering , agronomy , economics , biology , aerospace engineering , operating system , psychology , pedagogy , finance
In this paper an image‐based control for an optomechanical image derotator is implemented. A derotator is an optical system to support measurements on rotating components by tracking their rotational movement. As a consequence, the position and rotational velocity of the measurement object has to be known continuously. In general this would be accomplished by measuring these variables using a rotary encoder. However, not all measuring objects are equipped for this task. As a solution universally applicable to a wide range of measuring objects, an image‐based approach is developed in the scope of this work. The object is captured with a high‐speed camera to determine its position and velocity by image processing algorithms. To proof the applicability of this concept, a controller using the data acquired with the camera and a controller using data of the rotary encoder are compared. (© 2017 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)