planar motor

3 - coordinate

planar motor

Overview

Inductor

Control

Prototyp

LIM

Deutsch

Other Projects

Contakt

Prof. Dr.-Ing. Peter Dittrich
         Tel. : 03641 205 716 
Email: peter.dittrich@fh-jena.de
         
   Dipl.-Ing. (FH) Daniel Radeck
Tel.: 03641 205 718
     Email: radeck@fh-jena.de

supported by
Stiftung Industrieforschung

The 3 - coordinate planar motor works in 3 degrees of freedom (3 – DOF) without mechanical transmission or gears. This means the mover can work controlled in the two Cartesian coordinates x, y and in the rotation coordinate phi z_b.

The planar motor contains 4 inductors. The two inductors of the coordinate x_b and each of the inductors of the coordinate y_b are separately controlled. The base consists of massive iron with a copper layer on the top. It is the secondary part of the induction motor.
Four air bearings provide the gap between the mover and the secondary part. The position is measured with two optical 2D-navigation sensors (mouse sensors).

With the control unit it possible to plan the trajectory for the movement in the fixed coordinate frame (x, y, phi z_b).

Potentials

• Direct drive without mechanical transmission like gears

• No mechanical backslash or reduced stiffness in the drive

• High dynamic behavior and high accuracy

• Easy construction and compact package

• No wearing parts and high reliability

• Small mass and a low number of single parts

• In relation to conventional 3-DOF drive solutions high performance in the case of big travel ranges

Literature:
Dittrich, P.; Radeck, D.: Positionierung mit einem 3 – Koordinaten Planarmotor. SPS/IPC/DRIVES Nuernberg 2004, S. 487 - 494
Dittrich, P.: Integrierte Mehrkoordinaten–Asynchronantriebe. 4. Polish-German Mechatronic Workshop 2003, S. 85-88, Ilmenau 2003
Dittrich, P.; Loos, A.; Oravecz, T.: Planarantrieb aus Induktionsmotoren. Feinwerktechnik & Mikrotechnik 110(2002), H5., S. 16-18
Dittrich, P.: Asynchroner Mehrkoordinatenantrieb. DE OS 197 12 893 A1



© 2006