Cost-effective improvements of a rotating platform by integration of a high-accuracy inclinometer and encoders for attitude evaluation

Wen, Chenyang; He, Sheng Yang; Bu, Changgen; Hu, Peida

doi:10.1088/1361-6501/28/1/015901

Cited by 4 publications

(3 citation statements)

References 26 publications

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“…According to the different configurations of MEMS accelerometers [13][14][15], inclinometers can be divided into three categories: single-axis, orthogonal dual-axis/threeaxis [16] and redundant-axis configuration. The singleaxis configuration inclinometer can only measure the pitch angle, while the orthogonal dual-axis/three-axis configuration inclinometer can measure the pitch and roll angles simultaneously.…”

Section: Traditional Inclinometermentioning

confidence: 99%

Tilt measurement using inclinometer based on redundant configuration of MEMS accelerometers

Lu¹,

Liu²,

Zhang³

2018

Meas. Sci. Technol.

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Inclinometers are widely used in tilt measurement and their required accuracy is becoming ever higher. Most existing methods can effectively work only when the tilt is less than 60°, and the accuracy still can be improved. A redundant configuration of micro-electro mechanical system accelerometers is proposed in this paper and a least squares method and data processing normalization are used. A rigorous mathematical derivation is given. Simulation and experiment are used to verify its feasibility. The results of a Monte Carlo simulation, repeated 3000 times, and turntable reference experiments have shown that the tilt measure range can be expanded to 0°–90° by this method and that the measurement accuracy of can be improved by more than 10 times and the measurement accuracy of can be also improved effectively. The proposed method is proved to be effective and significant in practical application.

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Section: Traditional Inclinometermentioning

confidence: 99%

Tilt measurement using inclinometer based on redundant configuration of MEMS accelerometers

Lu¹,

Liu²,

Zhang³

2018

Meas. Sci. Technol.

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“…However, the mechanism of pitch measurement error has not been analyzed in detail. Moreover, some on-situ correction methods have also been used to improve pitch measurement accuracy [21][22][23][24]. Sipos et al used a thin-shell method to determine sensor error models so that the accuracy of a pitch and a roll angle evaluation was improved.…”

Section: Introductionmentioning

confidence: 99%

A method for improving the performance of centering rod surveying based on two-position correction

Dai¹,

Pan²,

Yang³

et al. 2022

Meas. Sci. Technol.

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Aiming at the problem that accelerometer’s bias and scale factor error decrease the measurement accuracy of centering rod surveying, a performance improving method for pitch measurement is proposed. The error model of centering rod surveying is built so that the relationship between pitch measurement error and accelerometer’s bias and scale factor error are clear. Numerical simulations are conduced out and the error variation is revealed. A two-position correction method is come up and twelve verification experiments are carried out. After correction, the measurement error is reduced from a few centimeters to submillimeter scale. Experimental results illustrate that the accuracy of pitch measurement is improved effectively, which meets the requirements for use. Three repeated experiments are carried out, the calculated uncertainties are 0.053 %, 0.035 % and 0.027 % separately, which indicates the feasibility and effectiveness of the proposed method in practical applications. It can provide some guidance for improving the performance of centering rod surveying.

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“…The turntable is a high-precision turntable for seeker testing. The rotary table is driven by an ultrasonic motor to ensure the nonmagnetic and high-precision requirements of the turntable [11,12]. Ultrasonic motors use the linear effects of piezoelectric materials to achieve linear or rotational motion through frictional coupling.…”

Section: Introductionmentioning

confidence: 99%

Research on Accuracy Analysis and Motion Control of Two-axis Non-magnetic Turntable Based on Ultrasonic Motor Journal

Wang

2020

mech

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In the calibration process of the positioner, in order to obtain the accurate angular position information of each axis of the turntable, it is necessary to test the rotation accuracy of the turntable higher than the accuracy of the target gyroscope, in order to achieve the test and calibration of the positioner. Therefore, this paper uses the non-magnetic technology to carry out research on the pointing accuracy and motion control of the turntable. At the same time, the influence of grating installation error on precision detection is analysed. The influence of steady-state error of turntable on the motion accuracy of turntable is analysed. Finally, the influence of servo control parameters on the dynamic performance of turntable and the influence on steady-state error are analysed. The test of the corner positioning accuracy of the turntable is carried out. The positioning accuracy and motion control parameters of the two-axis precision non-magnetic turntable are obtained, and the PID adjustment is introduced to make the accuracy index of the non-magnetic turntable meet the requirements. The turntable can realize a non-magnetic working environment and can achieve the high precision required by the index under the driving of the ultrasonic motor.

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Cost-effective improvements of a rotating platform by integration of a high-accuracy inclinometer and encoders for attitude evaluation

Cited by 4 publications

References 26 publications

Tilt measurement using inclinometer based on redundant configuration of MEMS accelerometers

Tilt measurement using inclinometer based on redundant configuration of MEMS accelerometers

A method for improving the performance of centering rod surveying based on two-position correction

Research on Accuracy Analysis and Motion Control of Two-axis Non-magnetic Turntable Based on Ultrasonic Motor Journal

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