Error Analysis of Magnetohydrodynamic Angular Rate Sensor Combing with Coriolis Effect at Low Frequency

Ji, Yue; Xu, Mengjie; Li, Xingfei; Wu, Tong; Tuo, Weixiao; Wu, Jiangqin; Dong, Jiuzhi

doi:10.3390/s18061921

Cited by 7 publications

(4 citation statements)

References 30 publications

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“…Huo studied the principle and designed the magnetic field of prototype [15,16]. Xu proposed a parallel magnetic field scheme to design and realize a prototype, and finished the corresponding testing [17], then improved its performance with new methods and structures in follow-up researches [18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Design parameters analysis and verification of angular vibration sensor based on magnetohydrodynamics

Wang

et al. 2021

Int. J. Metrol. Qual. Eng.

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The angular vibration is concerned in many fields such as satellite platform, manufacturing equipment for micro-electromechanical systems. However, the angular vibration with a frequency more than 15 Hz is difficult to be measured by traditional gyroscopes. The angular vibration sensor based on Magnetohydrodynamics can meet the requirements of both wide bandwidth and higher precision. In order to optimize the structure, a response of conducting fluid in the static magnetic field to the angular vibration is modeled in this paper. Based on this model, the sensitivity of the design parameters of magnetic field intensity, conducting fluids' height and width are analyzed to get an optimized parameter for higher precision and bandwidth. A prototype was developed to verify the analysis and optimization. The experiment results showed that the model is accurate with 6.7% error in lower-cut-off frequency and 1.4% error in scale factor. It can meet the design requirement of 6–1000 Hz.

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Section: Introductionmentioning

confidence: 99%

Design parameters analysis and verification of angular vibration sensor based on magnetohydrodynamics

Wang

et al. 2021

Int. J. Metrol. Qual. Eng.

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“…A solution to the resonance and detection range limitations of gyro is to adopt a multi-sensor fusion technology [8,9,10]. The ability of the sensor to detect frequencies can be easily divided into low-bandwidth measurement sensors and high-bandwidth measurement sensors [11,12]. Therefore, sensor data can be combined into two different characteristics in the form of a combining filter.…”

Section: Introductionmentioning

confidence: 99%

Optimal Design Based on Closed-Loop Fusion for Velocity Bandwidth Expansion of Optical Target Tracking System

Mao

Ren

Luo

et al. 2019

Sensors

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Micro-electro-mechanical system (MEMS) gyro is one of the extensively used inertia sensors in the field of optical target tracking (OTT). However, velocity closed-loop bandwidth of the OTT system is limited due to the resonance and measurement range issues of MEMS gyro. In this paper, the generalized sensor fusion framework, named the closed-loop fusion (CLF), is analyzed, and the optimal design principle of filter is proposed in detail in order to improve measurement of the bandwidth of MEMS gyro by integrating information of MEMS accelerometers. The fusion error optimization problem, which is the core issue of fusion design, can be solved better through the feedback compensation law of CLF framework and fusion filter optimal design. Differently from conventional methods, the fusion filter of CLF can be simply and accurately designed, and the determination of superposition of fusion information can also be effectively avoided. To show the validity of the proposed method, both sensor fusion simulations and closed-loop experiments of optical target tracking system have yielded excellent results.

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“…An on-orbit calibration system generally requires a high calibration efficiency, convenient operation, and small size. The MHD micro-angular vibration sensor requires high calibration accuracy and a wide passband: the order of magnitude of the angular resolution can be as high as μrad, and the measurable frequency can reach or exceed 800 Hz [20]. Table 1, Table 2 and Table 3 report each method’s “priority”, which combines the method’s convenience, size, accuracy, coverage frequency, and additional advantages and disadvantages.…”

Section: Introductionmentioning

confidence: 99%

An On-Orbit Dynamic Calibration Method for an MHD Micro-Angular Vibration Sensor Using a Laser Interferometer

Liu

et al. 2019

Sensors

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The magnetohydrodynamic (MHD) micro-angular vibration sensor is a significant component of the MHD Inertial Reference Unit (MIRU) and measures micro-amplitude and wide frequency angular vibration. The MHD micro-angular vibration sensor must be calibrated in orbit since the ground calibration parameters may change after lift-off. An on-orbit dynamic calibration method for the MHD micro-angular vibration sensor is proposed to calibrate the complex sensitivity of the sensor in high frequency. An absolute calibration method that combines a homodyne laser interferometer and an angular retroreflector was developed. The sinusoidal approximation method was applied, and the calibration system was established and tested using a manufactured MHD sensor. Furthermore, the measurement principle and installation errors were analyzed, including the eccentric installation error of the retroreflector, the tilt installation error of the retroreflector, and the optical path tilt error. This method can be realized within a rotation range of ±3∘ and effectively avoid the installation error caused by mechanical errors. The results indicate that the calibratable angular vibration frequency range is 25–800 Hz, and the angular velocity range is 0.076–7590 mrad/s. The expanded uncertainties of the sensitivity amplitude and phase shift of the calibration system for the MHD micro-angular sensor are 0.04% and 1.2∘ (k=2).

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Error Analysis of Magnetohydrodynamic Angular Rate Sensor Combing with Coriolis Effect at Low Frequency

Cited by 7 publications

References 30 publications

Design parameters analysis and verification of angular vibration sensor based on magnetohydrodynamics

Design parameters analysis and verification of angular vibration sensor based on magnetohydrodynamics

Optimal Design Based on Closed-Loop Fusion for Velocity Bandwidth Expansion of Optical Target Tracking System

An On-Orbit Dynamic Calibration Method for an MHD Micro-Angular Vibration Sensor Using a Laser Interferometer

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