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MEMS gyro temperature compensation identification algorithm based on thin plate spline interpolation method
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作者 SHANG Zhigang YAN Xiaofang +1 位作者 MA Xiaochuan HAO Yinghao 《Chinese Journal of Acoustics》 CSCD 2016年第4期485-496,共12页
MEMS gyroscopes are widely used in the underwater vehicles owing to their excellent performance and affordable costs.However,the temperature sensitivity of the sensor seriously affects measurement accuracy.Therefore,i... MEMS gyroscopes are widely used in the underwater vehicles owing to their excellent performance and affordable costs.However,the temperature sensitivity of the sensor seriously affects measurement accuracy.Therefore,it is significantly to accurately identify the temperature compensation model in this paper,the calibration parameters were first extracted by using the fast calibration algorithm based on the Persistent Excitation Signal Criterion,and then,MEMS gyro temperature compensation model was established by utilizing the thin plate spline interpolation method,and the corresponding identification results were compared with the results from the polynomial fitting method.The effectiveness of the proposed algorithm has been validated through the comparative experiment. 展开更多
关键词 MEMS gyro temperature compensation identification algorithm based on thin plate spline interpolation method IMU TPS
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The admittance feature representation and impact sound feature extraction in the material identification of ribbed plates
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作者 TIAN Xuhua CHEN Ke’an +2 位作者 LI Han YANG Lixue LIU Yang 《Chinese Journal of Acoustics》 CSCD 2018年第3期275-290,共16页
The admittance features representing the physical attributes are used as the in termediates to extract the materialattributesrelated impact sound features of ribbed plates. Firstly, the admittance feature representati... The admittance features representing the physical attributes are used as the in termediates to extract the materialattributesrelated impact sound features of ribbed plates. Firstly, the admittance feature representations of metal ribbed plates attributes are obtained and the relationship between the admittance features and the impact sound features are established via correlation analysis method. Then, materialattributesrelated impact sound features are obtained indirectly. Finally, the performances of different sound features for the material recognition of ribbedmetal plates are verified through the Support Vector Machine classifier. The results indicate that the obtained four sets of features can effectively identify the materials of the metal ribbed plates, while the accuracy of a single feature depends on the separable degree of the corresponding material attribute. And the features extracted based on admittance functions have higher average accuracy than that of timbre features. Therefore, the proposed sound feature extraction method based on admittance features is valid, and the extracted sound features can effectively reflect the physical attributes. 展开更多
关键词 The admittance feature representation and impact sound feature extraction in the material identification of ribbed plates
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