Title:
SYSTEM AND METHOD FOR LOAD SENSING USING PIEZOELECTRIC EFFECT
Document Type and Number:
WIPO Patent Application WO2005006397
Kind Code:
A3
Abstract:
System and method for measuring static load by using a piezoelectric load sensor with a feedback technique to compensate for the signal loss due to charge leakage, and therefore ensures measurement accuracy. The system is integrated with other structure, objects and devices to measure static loads applied to a mechanical shaft, in an on-line, in-process, quasi real-time fashion. The system can be used to measure static load and thus oversee an entire machine system or a manufacturing process.
Inventors:
GAO ROBERT X (US)
SOVENYI SZABOLCS (US)
SOVENYI SZABOLCS (US)
Application Number:
PCT/US2004/018535
Publication Date:
May 12, 2005
Filing Date:
June 10, 2004
Export Citation:
Assignee:
UNIV MASSACHUSETTS (US)
GAO ROBERT X (US)
SOVENYI SZABOLCS (US)
GAO ROBERT X (US)
SOVENYI SZABOLCS (US)
International Classes:
G01G3/13; G01N3/08; H01L; (IPC1-7): G01N3/08
Foreign References:
| US5861582A | 1999-01-19 | |||
| US4713770A | 1987-12-15 | |||
| US4729459A | 1988-03-08 | |||
| US5581013A | 1996-12-03 | |||
| JPS6421237A | 1989-01-24 |
Other References:
See also references of EP 1644716A4
Download PDF: