Company Filing History:
3 out of 3 
3 out of 2,994 
Years Active: 2016-2017
Title: Innovations of Qizhi Li in Magnetic Levitation Technology
Introduction
Qizhi Li is a prominent inventor based in Beijing, China. He has made significant contributions to the field of magnetic levitation technology, holding a total of 3 patents. His work focuses on enhancing the performance and efficiency of magnetic levitation molecular pumps.
Latest Patents
One of his latest patents is titled "Method and system for synchronously inhibiting subcritical vibrations of magnetic levitation molecular pump rotor." This innovative method involves synchronously sampling signals of subcritical vibrations generated when the rotor touches down. By obtaining the amplitude and phase of these vibrations, a compensation force is output to inhibit them effectively. This method achieves accurate synchronization of signals and rapid inhibition of rotor vibrations.
Another notable patent is the "Method of dynamic balancing for magnetic levitation molecular pump." This method includes activating a force-free control module after starting the motor of the pump. If the maximum radial vibration amplitude remains within a protective clearance during rotor acceleration, the control module can inhibit co-frequency vibrations. This allows the rotor to exceed its rigid critical rotational speed, facilitating a high-speed dynamic balancing operation.
Career Highlights
Qizhi Li has worked with notable organizations such as Kyky Technology Co., Ltd. and Tsinghua University. His experience in these institutions has contributed to his expertise in magnetic levitation technology and innovation.
Collaborations
Some of his coworkers include Yu Wang and Han Wu, who have collaborated with him on various projects related to his patents and research.
Conclusion
Qizhi Li's contributions to magnetic levitation technology through his innovative patents demonstrate his commitment to advancing this field. His work not only enhances the efficiency of molecular pumps but also sets a foundation for future developments in this area.