| US 7,614,291 B2 | ||
| Test bed and method for aerodynamic measurements on an object | ||
| Welf Ebeling, Munich (Germany); Karlheinz Ebbinghaus, Munich (Germany); Edzard Mercker, Munich (Germany); and Oliver Meyer, Munich (Germany) | ||
| Assigned to Bayerische Motoren Werke Aktiengesellschaft, Munich (Germany) | ||
| Filed on Feb. 25, 2008, as Appl. No. 12/36,672. | ||
| Application 12/036672 is a continuation of application No. PCT/EP2006/008002, filed on Aug. 12, 2006. | ||
| Claims priority of application No. 10 2005 040 445 (DE), filed on Aug. 26, 2005. | ||
| Prior Publication US 2008/0202227 A1, Aug. 28, 2008 | ||
| Int. Cl. G01M 17/00 (2006.01) | ||
| U.S. Cl. 73—116.07 | 15 Claims |
| 1. A test bed for performing aerodynamic measurements on an object, comprising:
a weighing plate operatively configured to support a weight of the object;
a bearing device on which the weighing plate is mounted relative to a stationary environment;
wherein the bearing device comprises at least one magnetic bearing including at least one magnetic coil and a current source,
the current source being operatively coupled to provide electric current through the magnetic coil; and
an evaluating device for determining a change in the electric current through the magnetic coil and evaluating a change in
forces acting on the weighing plate as a function of the determined change in current through the magnetic coil.
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