Method and apparatus for angle measurement

US9140580B2 · kind B2 · utility

Assignee

• DR. JOHANNES HEIDENHAIN GMBH · DE

Inventors

• Steffen Bielski · Garching bei München, DE
• Erich Strasser · Trostberg, DE
• Stephan Kreuzer · Traunstein, DE
• Alexander Kobler · Altötting, DE
• Darko Perusin · Traunreut, DE
• Elmar Mayer · Nußdorf, DE

Key dates

• Filing date: Jul 27, 2012
• Grant date: Sep 22, 2015
• Expiry date: Dec 27, 2033

Classification

• Technology area (CPC G): Physics
• CPC primary: G01D5/24471
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

An apparatus for angle measurement that includes a graduation carrier with a code track disposed concentrically to a center point of the graduation carrier. The apparatus includes a first scanning unit having a first interface and a second scanning unit having a second interface, wherein the first and second scanning units ascertain angle values of the graduation carrier by scanning the code track. The apparatus further includes a control unit having: 1) a device interface that is in communication with a follower electronics unit, 2) a control unit interface that is in communication with the first and second interfaces and 3) a processing unit. By which the processing unit, angle values of the first and second scanning units can be requested and processed into a corrected angle value, and the corrected angle value can be transmitted to the follower electronics unit via the device interface.