MUMBAI, India, Nov. 13 -- Intellectual Property India has published a patent application (202621120447 A) filed by Lakshmi Narain College Of Technology on October 07, 2026, for A Method, A Fault-Tolerant Controller And A System For Controlling A Direct-Current Motor Drive.
Inventors include Dr. Govind Prasad Pandiya; and Dr. Amrita Pahadia.
The application for the patent was published on November 13, 2026, under issue no. 46/2026.
Abstract: ABSTRACT A METHOD, A FAULT-TOLERANT CONTROLLER AND A SYSTEM FOR CONTROLLING A DIRECT-CURRENT MOTOR DRIVE The present invention relates to a method, a fault-tolerant controller, and a system for controlling a direct-current motor drive. The system includes a direct-current motor, a power converter, sensors, a pass-indexed state-memory buffer, and a controller. The controller forms a two-dimensional Roesser state vector from current-cycle measurements and preceding-cycle state information. A fault residual identifies a fault-contaminated state component. A memory-contamination gate prevents the contaminated component from being stored, while a state observer substitutes a bounded estimated state, thereby limiting fault propagation between operating cycles. A controller gain corresponding to an identified fault class is selected from gains derived using Linear Matrix Inequality conditions based on an unsymmetrical Lyapunov matrix. A stability-certificate monitor verifies a Lyapunov-decrease condition before authorizing a corrective pulse-width-modulated voltage command. If verification fails, a bounded fallback signal is applied. The present arrangement maintains stable motor operation under sensor, actuator, converter, parameter, and load disturbances in real time.
Disclaimer: Curated by HT Syndication.
