Location History:
- London, CA (2004)
- Ontario, CA (2004 - 2005)
Company Filing History:
Years Active: 2004-2005
Title: Ke Liu: Innovator in Brushless DC Motor Technology
Introduction
Ke Liu is a prominent inventor based in California, known for his contributions to the field of brushless DC motor technology. With a total of 4 patents to his name, Liu has made significant advancements that enhance the efficiency and performance of electric motors.
Latest Patents
Liu's latest patents include a method and system for determining electronic commutation in brushless DC machines irrespective of the placement of rotor position sensors. This innovative approach utilizes a single-bit rotor sensor and the back EMF signal from a stator winding to calculate a delay value, which is crucial for establishing commutation. Another notable patent is a speed-based open-loop start-up method for brushless DC motors. This method allows for starting a brushless DC motor at any initial speed by establishing an initial stator-field speed and synchronizing the rotor speed with the stator-field speed.
Career Highlights
Ke Liu is currently employed at Siemens VDO Automotive Corporation, where he continues to develop cutting-edge technologies in motor control. His work has been instrumental in advancing the capabilities of brushless DC motors, making them more reliable and efficient for various applications.
Collaborations
Liu has collaborated with notable colleagues such as John Edward Makaran and Scott Kirkpatrick, contributing to a dynamic work environment that fosters innovation and creativity.
Conclusion
Ke Liu's contributions to brushless DC motor technology exemplify his commitment to innovation and excellence in engineering. His patents reflect a deep understanding of motor dynamics and a drive to improve electric motor performance.