Qianjie Liu

Title: Qianjie Liu: Innovator in Electro-Hydraulic Systems

Introduction

Qianjie Liu is a notable inventor based in Nanchang, China. He has made significant contributions to the field of electro-hydraulic systems, particularly in the area of fault diagnosis for pressure sensors. His innovative methods have the potential to enhance the reliability and efficiency of hydraulic systems.

Latest Patents

Qianjie Liu holds a patent titled "Methods for fault diagnosis of pressure sensor of electro-hydraulic system with explicit controller and implicit controller in parallel." This method involves receiving parameter information from the electro-hydraulic system and estimating the first chamber pressure of the hydraulic actuator online. It utilizes the second chamber pressure to improve diagnostic accuracy. The process includes obtaining valve opening signals from both explicit and implicit controllers, calculating residual signals, and comparing them with preset thresholds to identify faults in the independent metering valves. This method is recognized for its simplicity, fast response time, low troubleshooting costs, and improved diagnostic coverage.

Career Highlights

Throughout his career, Qianjie Liu has worked at prestigious institutions such as East China Jiaotong University and Chongqing University. His experience in these academic environments has allowed him to develop and refine his innovative approaches to engineering challenges.

Collaborations

Qianjie Liu has collaborated with notable colleagues, including Gang Li and Diancheng Chen. Their combined expertise has contributed to advancements in the field of electro-hydraulic systems.

Conclusion

Qianjie Liu's work in fault diagnosis methods for electro-hydraulic systems showcases his innovative spirit and dedication to improving engineering practices. His contributions are valuable to the advancement of technology in this field.