The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 05, 2021
Filed:
Sep. 12, 2016
Texas Instruments Incorporated, Dallas, TX (US);
Shanmuganand Chellamuthu, Richardson, TX (US);
Qunying Li, Allen, TX (US);
Sri Navaneethakrishnan Easwaran, Plano, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
An angular resolver system includes, for example, an imbalance detector for detecting degraded resolver output signals. The imbalance detector includes a first and second power averaging circuits and a comparator circuit. The first power averaging circuit includes a first integrator for generating over a first time window a first average power signal in response to resolver sensor output signals. The second power averaging circuit includes a second integrator for generating over a second time window a second average power signal in response to the resolver sensor output signals, where the first time window is longer than the second time window. The comparator circuit compares the first average power signal and the second average power signal and generates a fault signal when the first average power signal and the second average power signal differ by a selected voltage threshold.