State estimation, diagnosis and control using equivalent time sampling

US8751097B2 · kind B2 · utility

Assignees

• GM GLOBAL TECHNOLOGY OPERATIONS LLC · US
• THE INDIAN INSTITUTE OF TECHNOLOGY KHARAGPUR · IN

Inventors

• Soumen De · Bengaluru, IN
• Pattada A. Kallappa · Savanuru, IN
• Pulak Bandyopadhyay · Rochester Hills, US
• Siddhartha Mukhopadhyay · Sherghati, IN
• Somnath Sengupta · Ellicott City, US
• Alok Kanti Deb · Sherghati, IN

Key dates

• Filing date: May 10, 2011
• Grant date: Jun 10, 2014
• Expiry date: Dec 31, 2031

Classification

• Technology area (CPC G): Physics
• CPC primary: G05B23/0254
• WIPO field: Control
• WIPO sector: Instruments

Abstract

A method and system for using Equivalent Time Sampling to improve the effective sampling rate of sensor data, and using the improved-resolution data for diagnosis and control. Data samples from existing sensors are provided, where the sampling rate of the existing sensors is not sufficient to accurately characterize the parameters being measured. High-resolution data sets are reconstructed using Equivalent Time Sampling. High-resolution input data sets are used in a system model to simulate the performance of the system being measured. Results from the system model, and high-resolution output data sets from Equivalent Time Sampling, are provided to an estimator, which provides accurate estimation of measured quantities and estimation of quantities not measured. Output from the estimator is used for fault diagnosis and control of the system being measured.