China Three Gorges University

Ecolab USA Inc.

Huazhong Agricultural University

Wuhan Bio-links Technology Co., Ltd.

Zhihui Luo

Yubao Liu

Lida Zhu

Min Liu

Chao Wang

Chao Zhang

Chao Tan

Xianwei Yang

Hongguang Piao

Sheng Zheng

Mingxue Shao

Xiufeng Huang

Guangduo Lu

Hua Zhao

Liqing Pan

Qiongying Ren

Yunli Xu

Hongyu Zhang

Yuan Quan

Qingyong Yang

Duo Fan

A high-precision magnetic suspension accelerometer for measuring the linear acceleration of a spacecraft is provided, comprising a magnetically shielded vacuum chamber system, a magnetic displacement sensing system, a magnetic suspension control system and a small magnetic proof mass. A optical coherence displacement detection technique is utilized for precisely measuring the position and the posture of the small magnetic proof mass in real time, and a magnetic suspension control technique is utilized for precisely controlling the position and the posture of the small magnetic proof mass to be brought back to the origin, so as to keep the small magnetic proof mass in the center of the systemic inner chamber. When the spacecraft is subject to a non-conservative force, the magnitude and direction of the acceleration can be precisely measured via the measurement of currents in the position control coils due to the acceleration of the spacecraft proportional to the currents of the position control coils. The accelerometer of the invention can avoid the technical bottleneck of high-precision machining, is easy to be produced and can achieve more high-precision measurement of the acceleration vector.

High-precision magnetic suspension accelerometer

Growing community of inventors

Yichang, China

Zhihui Luo