Variable-structure diagnostics approach achieving optimized low-frequency data sampling for EMA motoring subsystem
US7211982B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 5, 2006 |
| Grant date | May 1, 2007 |
| Priority date | — |
| Expiry date | Jun 5, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S706/913
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention provides a diagnostics methodology and embedded electronic system that allows optimized low-frequency data sampling for EMA motoring subsystems in an operating vehicle. Each of the EMA motoring subsystems includes: an EMA; at least one motor for driving the EMA; and power controls for operating the motor, wherein the power controls includes a DSP controller for sampling and processing data at low-frequency sampling rates. The diagnostic methodology includes a method that has the steps of: determining an operational mode of the EMA motoring subsystem; selecting a sampling rate optimized for the determined operational mode; acquiring and processing data at the selected sampling rate; and analyzing the processed data to identify and classify a fault of the EMA motoring subsystem.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.