Apparatus and method for material testing including configuring an electrical machine in a braking configuration
US11788940B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 23, 2021 |
| Grant date | Oct 17, 2023 |
| Priority date | — |
| Expiry date | Oct 19, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2203/0423
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An example material testing apparatus includes: guide means; sample test means for holding a sample and applying a test force to the sample; a crosshead arranged to support at least a portion the sample test means, wherein the crosshead is moveable about the guide means; crosshead drive means for moving the crosshead generally vertically about the guide means, wherein the crosshead drive means is driven by an electric machine in a driving configuration; and a controller arranged to: configure the electric machine into the driving configuration; control the crosshead drive means to move the crosshead generally vertically about the guide means; and configure the electric machine into a braking configuration, wherein in the braking configuration a winding of the electric machine is connected together with a low resistance connection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.