Company Filing History:
Years Active: 2003
Title: Innovations of Robert J Ewalds
Introduction
Robert J Ewalds is a notable inventor based in Schifflange, Luxembourg. He has made significant contributions to the field of engineering, particularly in the area of solenoid actuated valves. His innovative approach has led to the development of a unique patent that enhances the performance of these devices.
Latest Patents
Ewalds holds a patent for "Model-based position control for a solenoid actuated valve." This invention presents an improved position control mechanism for solenoid actuated valves. The solenoid is activated through a combination of a feed-forward component, which is based on a model of the steady state operation of the valve, and a closed-loop feedback component. This feedback responds to changes in the commanded position and compensates for any inaccuracies in the steady state model. The method includes a valve characterization procedure that measures the actual force generated by the solenoid for various combinations of valve position and solenoid current. This results in a table of coil current in terms of developed force and valve position. In operation, the model estimates the solenoid force required to achieve the commanded valve position under steady state conditions. A controller then uses this information to obtain a feed-forward coil current command, which is combined with a closed-loop feedback coil current command to develop a corresponding PWM duty cycle.
Career Highlights
Robert J Ewalds is currently employed at Delphi Technologies, Inc. His work has been instrumental in advancing the technology related to solenoid actuated valves. Ewalds has demonstrated a strong commitment to innovation and engineering excellence throughout his career.
Collaborations
Ewalds has collaborated with notable colleagues, including James Craig Smith and James F Sinnamon. These partnerships have contributed to the successful development and implementation of his innovative ideas.
Conclusion
Robert J Ewalds is a distinguished inventor whose work in solenoid actuated valves has made a significant impact in the field of engineering. His patent reflects a deep understanding of control mechanisms and showcases his innovative spirit.