Spinning projectile’s attitude measurement using intersection ratio of magnetic sensors

Yu, Jing; Bu, Xiongzhu; Xiang, Chao; Yang, Bo

doi:10.1177/0954410016644628

Cited by 8 publications

(5 citation statements)

References 15 publications

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“…After the algorithm is verified, it is verified according to the data of the magnetic measurement system. With the three-axis magnetometer HMC1053 produced by Honeywell company as the only attitude sensing chip and the STM32 single chip microcomputer produced by ST Company as the controller, the control circuit was designed to constitute the magnetic attitude measurement system [21,22], and the magnetic measurement system was fixed on the three-axis highprecision flight simulation turntable, as shown in Figure 6. e control table rotates around the X-axis, Y-axis, and Zaxis, respectively, and the roll angle is calculated by using the magnetic measurement system, and the roll angle and the roll rotation rate are optimized and estimated by taking the magnetic measurement as the observation data.…”

Section: Validation Of Semiphysical Turntable Datamentioning

confidence: 99%

A Real-Time Estimation Method of Roll Angle and Angular Rate Based on Geomagnetic Information

Gao

Zhang

et al. 2020

Mathematical Problems in Engineering

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In the course of the guidance transformation of the rotating projectile, the accurate acquisition of the roll angle and roll angle rate is very important to the attitude determination and guidance control of the rotating projectile. However, due to the impact of high rotation and high overload of projectile, MEMS gyros have problems such as limited range, saturation, overload, and even performance degradation, which make the roll angle rate unable to be output normally. At the same time, because the MEMS gyro estimation of roll angle is in the form of angular rate integral, the roll angle cannot be estimated normally if the roll angle rate cannot be accurately obtained. In order to solve this problem, a real-time estimation of projectile roll angle and roll rate based on geomagnetic information under high dynamic and high overload conditions is presented. Firstly, according to the motion characteristics of the rotating projectile, the motion model of the projectile is established, and the roll angle and roll angle rate of the projectile are estimated by Kalman filtering algorithm under the conditions of high axial rotation and high overload. Considering the high dynamic characteristics of the rotating projectile, based on the Kalman filter, the algorithm of the forgetting filter with the forgetting factor is further adopted to estimate the roll angle and roll angle rate, so as to reduce the error caused by the estimation delay in the process of high-speed dynamic change. Simulation data and semiphysical test results show that the accuracy of roll angle estimated by this method reaches about 2° in semiphysical test, which is one time higher than that calculated by the system. In the semiphysical experiment, the accuracy of the estimated roll rotation rate reaches 5 °/s, which is more than 6 times higher than that obtained by direct derivation. In the high dynamic stage, compared with the pure Kalman filter, the accuracy of roll angle with forgetting factor estimation is improved by an order of magnitude, and the accuracy of roll angle rate is improved by 4 times, which meets the desired accuracy of rotating projectile.

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Section: Validation Of Semiphysical Turntable Datamentioning

confidence: 99%

A Real-Time Estimation Method of Roll Angle and Angular Rate Based on Geomagnetic Information

Gao

Zhang

et al. 2020

Mathematical Problems in Engineering

View full text Add to dashboard Cite

show abstract

“…Unfortunately, this kind of method is only suitable for the situation where the pitch and yaw angles change slowly. In [12], they derived the ratio of magnetometer extreme values to pitch angle by establishing an output model for triaxial magnetometer, thereby proposing the cross‐ratio method to determine the attitude of the projectile. Their method is simple in principle, but the pre‐calibration process is complicated, and the anti‐interference ability is poor.…”

Section: Introductionmentioning

confidence: 99%

Real‐time estimation of roll angle for trajectory correction projectile using radial magnetometers

Zhao

2020

IET Radar, Sonar & Navigation

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“…However, the large volume of the satellite receiver is not suitable for the limited space of the projectile. The magnetometer based on the Earth’s magnetic field has the advantages of low cost, strong overload resistance, and all-weather operation [ 13 , 14 , 15 ]. On the one hand, the calibration of the magnetometer is complicated.…”

Section: Introductionmentioning

confidence: 99%

Roll Angular Rate Measurement for High Spinning Projectiles Based on Redundant Gyroscope System

Zhang

et al. 2020

Micromachines

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Precision-guided projectiles, which can significantly improve the accuracy and efficiency of fire strikes, are on the rise in current military engagements. The accurate measurement of roll angular rate is critical to guide a gun-launched projectile. However, Micro-Electro-Mechanical System (MEMS) gyroscope with low cost and large range cannot meet the requirement of high precision roll angular rate measurement due to the limitation by the current technology level. Aiming at the problem, the optimization-based angular rate estimation (OBARS) method specific for projectiles is proposed in this study. First, the output angular rate model of redundant gyroscope system based on the autoregressive integrated moving average (ARIMA) model is established, and then the conventional random error model is improved with the ARIMA model. After that, a Sage-Husa Adaptive Kalman Filter (SHAKF) algorithm that can suppress the time-varying process and measurement noise under the flight condition of the high dynamic of the projectile is designed for the fusion of dynamic data. Finally, simulations and experiments have been carried out to validate the performance of the method. The results demonstrate the proposed method can effectively improve the angular rate accuracy more than the related traditional methods for high spinning projectiles.

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Spinning projectile’s attitude measurement using intersection ratio of magnetic sensors

Cited by 8 publications

References 15 publications

A Real-Time Estimation Method of Roll Angle and Angular Rate Based on Geomagnetic Information

A Real-Time Estimation Method of Roll Angle and Angular Rate Based on Geomagnetic Information

Real‐time estimation of roll angle for trajectory correction projectile using radial magnetometers

Roll Angular Rate Measurement for High Spinning Projectiles Based on Redundant Gyroscope System

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