Patents & Publications

Innovations & Contributions in control theory, control applications, powertrains, electric drive systems and power generation systems

Granted Patents

1. US12463428B2 "Systems and Methods for Multiple Energy Storage System Dispatch", Caterpillar Inc, Granted: Nov 4, 2025; Filed: Oct 4, 2023

2. US12431712B2 “Systems and Methods for Control of Distributed Energy Resources”, Caterpillar Inc, Granted: Sept 30, 2025; Filed: Sept 9, 2022

3. US11962156B2 “Systems And Methods For Constrained Optimization Of A Hybrid Power System That Accounts For Asset Maintenance And Degradation”, Caterpillar Inc, Granted: April 16, 2024; Filed: Aug 19, 2021

4. US11936184B2 “Systems And Methods For Operating Hybrid Power System By Combining Prospective And Real-Time Optimizations”, Caterpillar Inc, Granted: March 19, 2024; Filed: Aug 19, 2021

5. US11451085B2 “Fuel Cell and Battery Backup Power Sources within Power Systems”, Caterpillar Inc, Granted: Sept 20, 2022; Filed: Aug 31, 2020

6. US11428704B2 “Generator Pole Slip Detection”, Caterpillar Inc, Granted: Aug 30, 2022; Filed: Jan 9, 2020

7. US11404986B2 “Torque Control Based on Rotor Resistance Modeling in Induction Motors”, Caterpillar Inc, Granted: August 2, 2022; Filed: Aug 14, 2020

8. US11384629B2 “Systems and Methods for Driving a Pump using an Electric Motor”, Caterpillar Inc, Granted: July 12, 2022; Filed: Nov 30, 2020

9. US12060877B2 “Hydraulic Fracturing Pump Control System”, Caterpillar Inc, Granted: Aug 13, 2024; Filed: Sept 18, 2020

10. US11188045B2 “Energy Management System with genset and energy storage”, Caterpillar Inc, Granted: Nov 30, 2021; Filed: March 18, 2019

11. US10998732B2 “System and Method for Diverse Multi-Source Energy Management”, Caterpillar Inc, Granted: May 4, 2021; Filed: March 20, 2019

12. US86263682 “Electric drive power response management system and method”, Caterpillar Inc, Granted: Jan 7, 2014; Filed: Sept 7, 2010

13. US8482238B2 “System and method for estimating generator rotor temperature in an electric drive machine”, Caterpillar Inc, Granted: July 9, 2013; Filed: Nov 30, 2010

14. US7918296B2 “Cooling system for an electric drive machine and method”, Caterpillar Inc, Granted: April 5, 2011; Filed: Sept 15, 2008

15. US7467619B2 “Apparatus and method for accurate detection of locomotive fuel injection pump solenoid closure”, General Electric Company, Granted: Dec 23, 2008; Filed: Sept 24, 2007

16. US7328690B2 “Apparatus and method for accurate detection of locomotive fuel injection pump solenoid closure”, General Electric Company, Granted: Feb 12, 2008; Filed: July 16, 2004

17. US7000598B2 “Bumpless crankshaft position sensing”, General Electric Company, Granted: Feb 21, 2006; Filed: May 27, 2004

18. US6507789B1 “Gear transmission condition monitoring method and apparatus”, General Electric Company, Granted: Jan 14, 2003; Filed: July 18, 2000

19. US6208097B1 “Traction vehicle adhesion control system without ground speed measurement”, General Electric Company, Granted: Mar 27, 2001; Filed: Dec 6, 1999

20. US6430466B1 “System for controlling clamp pressure in an automatic molding machine”, General Electric Company, Granted: Aug 6, 2002; Filed: Aug 23, 1999

21. US6250904B1 “Closed loop control of roll speeds in plastics sheet extrusion”, General Electric Company, Granted: June 26, 2001; Filed: Feb 22, 1999

22. US6449564B1 “Apparatus and method for monitoring shaft cracking or incipient pinion slip in a geared system”, General Electric Company, Granted: Sept 10, 2002; Filed: Nov 23, 1998

Select Academic Publications

1. American Control Conference, “Approximate Stability Conditions for Systems with Input Delay and Digital PI/PID Controller of Time Delay Control Form”, American Control Conference, May 2021

2. ASME Dynamic Systems and Control Conference, “New Analysis/Design of Generalized Discrete PI Controller via Discrete Time Delay Control for Nonlinear Systems”, Oct 2020

3. ASME Dynamic Systems and Control Conference, “New Stability Analysis and Design of Discrete Time Delay Control for Nonaffine Nonlinear Systems”, Oct 2020

4. American Control Conference, “New Stability Conditions for Time Delay Control of Nonlinear Systems”, July 2020

5. IEEE Conference on Control Applications,, “Phase Locked Loop Control of Turboprop Aircraft Engines for Cancellation of Interior or Exterior Noise”, Sept 1995

6. Journal of ASME Dynamic Systems, Measurement, and Control, “Analysis of linear time invariant systems with time delay”, 1992

7. Journal of ASME Dynamic Systems, Measurement, and Control, “Dynamic analysis and control of high speed and high precision active magnetic bearings”, 1992

8. ASME Winter Annual Meeting, “Stability analysis of time delay control with application to high speed magnetic bearings”, 1990

9. Second International Symposium on Magnetic Bearings, “A Digital Time Delay Controller for Active Magnetic Bearings”, 1990

10. IEEE Control System Magazine, “Computer-Aided Design and Analysis for a Class of Nonlinear Systems”, 1990

Patent Publications

1. US20250206176, “Electrified Machine and Charger Fleet and Microgrid Power Dispatch”, Pub June 19, 2025; Patent filed: Dec 13, 2023

2. US20250202235, “Structure for Computationally Efficient Optimization for Real Time Microgrid Dispatch”, Pub June 26, 2025; Patent filed: Dec 21, 2023

3. US20250125630, “Systems and Methods for Microgrid Asset Dispatch”, Pub April 17, 2025, Patent filed: Oct 17, 2023

4. US20250070595 , “Method and System for Configuring an Electrical Grid”, Pub Feb 27, 2025, Patent filed: Aug 21, 2023

5. WO2024054743, “Distributed micro-grid control system with a plurality of controllers connected to each other in a peer-to-peer network”, Pub March 2024, Filed: Aug 15, 2023

6. US20250042273, “Charging System for Non-Road Electric Vehicle”, Caterpillar Inc., Pub Feb 6, 2025, Patent filed: Aug 1, 2023

7. US20240405313 “Thermal management of Battery Systems”, Pub Dec 5, 2024, patent filed May 30, 2023

8. DE102021121927, “Power sources for a fuel cell and for power failure protection in power supply systems”, Patent pub Mar 3, 2022, Filed: Aug 24, 2021

9. US20170353037 “Flexible variable speed genset system”, Patent Pub Dec 7, 2017; Filed: June 16, 2016

10. US20120018236 “Electric powertrain for off-highway trucks”, Patent pub Jan 26, 2012; Filed: July 26, 2011

11. US20100065356 “Electric powertrain for off-highway trucks”, Patent pub Mar 18, 2010; Filed: Sept 15, 2008