Company Filing History:
Years Active: 1987-1989
Title: Innovations by Steven J Hallman in Four Wheel Steering Systems
Introduction
Steven J Hallman is an accomplished inventor based in Saginaw, MI (US). He has made significant contributions to the field of automotive technology, particularly in steering systems. With a total of 4 patents to his name, Hallman's work focuses on enhancing vehicle control and performance.
Latest Patents
One of Hallman's notable inventions is a four wheel steering system with closed-loop feedback and open-loop control. This innovative system employs a separate closed-loop feedback controller and an open-loop feedforward control path. The response characteristics of both control paths are optimized to enhance overall system performance. By independently varying the authority and delay properties of these paths, Hallman achieves the benefits of both control methods within a single system.
Another significant patent is the closed-loop four wheel steering system featuring dual response rate rear steering. In this system, the driver’s steering inputs are measured and filtered to delay their application to the reference model. This design allows the rear steer control to respond at different rates to driver inputs and externally generated disturbances, improving the vehicle's handling and responsiveness.
Career Highlights
Steven J Hallman is currently employed at GM Global Technology Operations, Inc. His work at this leading automotive company has allowed him to develop and refine his innovative steering technologies. Hallman's expertise in this area has positioned him as a key contributor to advancements in vehicle dynamics.
Collaborations
Throughout his career, Hallman has collaborated with talented individuals such as Scott S Kimbrough and Kenneth Lee Westercamp. These partnerships have fostered a creative environment that encourages innovation and the development of cutting-edge automotive technologies.
Conclusion
Steven J Hallman's contributions to four wheel steering systems exemplify his commitment to innovation in the automotive industry. His patents reflect a deep understanding of vehicle dynamics and control systems, paving the way for enhanced driving experiences.