Extension of the rotation-rate measurement range with no sensitivity loss in a cold-atom gyroscope

2021 ◽  
Vol 104 (1) ◽  
Author(s):  
Yuan Zhao ◽  
Xuguang Yue ◽  
Fusheng Chen ◽  
Chen Huang
Keyword(s):  
Rotation Rate ◽  
Cold Atom ◽  
Measurement Range ◽  
Rate Measurement ◽  
Sensitivity Loss

Rotation rate measurement of a microfluidic biodisk spinner and automatic adjustment for the pulsed light source

2007 ◽  
Vol 39 (1) ◽  
pp. 202-209 ◽  
Author(s):  
Chern-Sheng Lin ◽  
Chia-Hau Lin ◽  
Chao-Ying Wu ◽  
Hong Zong Shieh ◽  
Chi-Chih Lay
Keyword(s):  
Light Source ◽  
Rotation Rate ◽  
Rate Measurement ◽  
Pulsed Light ◽  
Automatic Adjustment

scholarly journals Performance Enhancement Method for Angular Rate Measurement Based on Redundant MEMS IMUs

Micromachines ◽  
2019 ◽  
Vol 10 (8) ◽  
pp. 514 ◽  
Author(s):  
Li Xing ◽  
Xiaowei Tu ◽  
Weixing Qian ◽  
Zhi Chen ◽  
Qinghua Yang
Keyword(s):  
Performance Enhancement ◽  
Low Cost ◽  
Angular Rate ◽  
Measurement Data ◽  
Measurement Range ◽  
Measurement Unit ◽  
Small Range ◽  
Rate Measurement ◽  
Wide Range ◽  
Mems Gyroscopes

Aiming at the low-cost, wide-range, and accurate measurement requirement for Microelectromechanical System (MEMS) Inertial Measurement Unit (IMU) on a multi-rotor Unmanned Aerial Vehicle (UAV), the paper designs a heterogeneous parallel redundancy configuration scheme. In redundant MEMS IMUs, a high-cost and small-range MEMS gyroscope is combined with low-cost and large-range MEMS gyroscopes. Then, an adaptive data fusion method of redundant MEMS gyroscopes is proposed. By the designed experiments based on the simulation data and the sensor measurement data, the proposed method has been proved that it can effectively improve the angular rate measurement performance of the multi-rotor UAV and broaden the angular rate measurement range on the basis of saving the configuration cost and volume of the micro IMU.

The Triaxial Angular Rate Measurement System Based on Two MEMS Accelerometers Used for Rotating Carrier

2014 ◽  
Vol 609-610 ◽  
pp. 1219-1225
Author(s):  
Xiao Ming Zhang ◽  
Dai Di Zhao ◽  
Jian Yu Shang ◽  
Xing Cui ◽  
Jun Liu
Keyword(s):  
Measurement System ◽  
Measurement Accuracy ◽  
Physical Simulation ◽  
Angular Rate ◽  
Measurement Range ◽  
Small Range ◽  
Rate Measurement ◽  
Mechanics Model ◽  
Mems Accelerometers ◽  
Large Measurement

Considering that the MEMS Gyroscope used in rotating carrier has the problems of small range and low measurement accuracy, the tri-axial angular rate measurement system based on two MEMS accelerometers used for rotating carrier was presented in this paper. The system has the advantages of large measurement range, anti-high overload, simple structure, small volume and low price. From the principle of the tri-axial angular rate measurement system, the mathematical model of the system was established and the mechanics model of the system was discussed. The different processing method of the output signal in each condition was summarized based on the mechanics model. Finally, the semi-physical simulation experiment was done to verify these theories. The experimental results show that the system scheme is feasible and has obvious advantages in the range and measurement accuracy.

Rotation rate measurements with a large area cold atom interferometer

2020 ◽  
Author(s):  
A. Landragin ◽  
M. Altorio ◽  
R. Gautier ◽  
L. A. Sidorenkov ◽  
R. Geiger
Keyword(s):  
Rotation Rate ◽  
Cold Atom ◽  
Atom Interferometer ◽  
Large Area

State special primary acceleration measurement standard for gravimetry GET 190-2019

2020 ◽  
pp. 3-8
Author(s):  
L.F. Vitushkin ◽  
F.F. Karpeshin ◽  
E.P. Krivtsov ◽  
P.P. Krolitsky ◽  
V.V. Nalivaev ◽  
...  
Keyword(s):  
High Precision ◽  
Free Fall ◽  
Measurement Range ◽  
Measurement Standard ◽  
Acceleration Measurement ◽  
Measurement Systems ◽  
Free Fall Acceleration ◽  
Investigation Methods ◽  
Measurement Results ◽  
Upper Level

The State special primary acceleration measurement standard for gravimetry (GET 190-2019), its composition, principle of operation and basic metrological characteristics are presented. This standard is on the upper level of reference for free-fall acceleration measurements. Its accuracy and reliability were improved as a result of optimisation of the adjustment procedures for measurement systems and its integration within the upgraded systems, units and modern hardware components. A special attention was given to adjusting the corrections applied to measurement results with respect to procedural, physical and technical limitations. The used investigation methods made it possibled to confirm the measurement range of GET 190-2019 and to determine the contributions of main sources of errors and the total value of these errors. The measurement characteristics and GET 90-2019 were confirmed by the results obtained from measurements of the absolute value of the free fall acceleration at the gravimetrical site “Lomonosov-1” and by their collation with the data of different dates obtained from measurements by high-precision foreign and domestic gravimeters. Topicality of such measurements ensues from the requirements to handle the applied problems that need data on parameters of the Earth gravitational field, to be adequately faced. Geophysics and navigation are the main fields of application for high-precision measurements in this field.

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