Structure testing machine
US5511431A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 23, 1994 |
| Grant date | Apr 30, 1996 |
| Priority date | — |
| Expiry date | Sep 23, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2203/0208
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A structure testing machine for carrying out tests on a test structure (25) for an assessment of the response of the structure to test loads applied to the structure in the direction of a predetermined axis of the structure under the control of a monitored control system (21) which forms part of the machine and which has a forward path which includes an actuator (24) which is supported by a machine frame and which upon actuation applies to the test structure a test load in the direction of the predetermined axis, and a controller (22) responsive to a controller input signal and to controller parameters to apply to the actuator an actuating signal to cause the actuator to subject the test structure to a test load which produces dimensional changes in the test structure in the direction of the predetermined axis. The machine is provided with an adaptive control loop which comprises a stiffness estimator (27) which generates from the dimensional changes in the test structure adaptive control signals (E.sub.S) representative of the structure stiffness and adaptive control signals (E.sub.C) representative of the combined stiffness of the actuator, actuator support frame and the test str…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.