A High-Precision Motor Control Method for Tracking Wandering Azimuth Coordinate System Based on Tri-Axis Rotational Inertial Navigation System (RINS)

Lü, Yanyu; Wang, Lei; Song, Tianxiao; Wang, Wei

doi:10.1109/jsen.2021.3126310

Cited by 5 publications

(7 citation statements)

References 20 publications

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“…From (12), it can be observed that there are two types of coupling errors associated with the rotation angular velocity ω r within the system: One type is with cos ϕ 1 and this type of error has a mean value of zero. The other type is one-sided errors, such as ∆K gz ω r .…”

Section: Oscillation Errorsmentioning

confidence: 99%

“…navigation system (RINS) can improve navigation accuracy [2,3] and therefore is now widely used in military and civilian applications [2][3][4][5]. The number of rotational gimbals in RINS is generally no more than three and studies have been conducted on different types of RINS, including single [4][5][6][7], dual [8][9][10], and tri-axis systems [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

“…The design of the rotation strategy mainly contains two aspects. On the one hand, the external angular motion of the carriers is isolated by designing different motor control laws to maintain the navigation performance of the RINS under fast maneuvering conditions, such as [5,8,12]. On the other hand, the rotation modulation principle needs to be fully utilized to offset and suppress the residual calibration errors of the inertial measurement unit (IMU), which is the focus of this manuscript.…”

Section: Introductionmentioning

confidence: 99%

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A multi-axis alternating continuous rotation scheme for tri-axis rotational inertial navigation system (RINS) with fiber optic gyro

Lu,

Wang,

Liu

et al. 2023

Meas. Sci. Technol.

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Benefiting from the rotational modulation technique and the gimbal structure, RINS can improve navigation accuracy by about one order of magnitude compared with the strap-down inertial navigation system (SINS). By continuously rotating around a fixed axis, the constant and slow variability errors perpendicular to the direction of the rotation axis can be effectively restrained while the errors in the direction of the rotation axis cannot be suppressed. Therefore, a multi-axis rotation scheme needs to be designed. Meantime, the fiber optic gyro (FOG), as a very popular inertial device, is well suited for RINS but has a larger scale factor error and poorer stability than the laser gyro; thus, it is not suitable to flip the IMU around the horizontal axis too much in the rotation scheme to avoid the rapid accumulation of horizontal misalignment angle. Accordingly, we propose a multi-axis alternating continuous rotation scheme for tri-axis RINS with FOG. During the navigation process, the inner, middle and outer gimbals rotate forward and reverse in sequence. The IMU rotates continuously in the three-axis direction can effectively suppress the effects of constant and slow-varying errors and also avoid the large velocity errors oscillation caused by flipping the IMU. The simulations and navigation tests show that the multi-axis alternating continuous rotation scheme can achieve navigation accuracy comparable to the multi-position rotation scheme and reduce the oscillation of velocity errors, which has important research significance and engineering value for the research of RINS with FOG.

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Section: Oscillation Errorsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A multi-axis alternating continuous rotation scheme for tri-axis rotational inertial navigation system (RINS) with fiber optic gyro

Lu,

Wang,

Liu

et al. 2023

Meas. Sci. Technol.

Self Cite

View full text Add to dashboard Cite

show abstract

“…The system needs to be integrated seamlessly with the aircraft's overall structure, systems, and controls, which can be technically demanding. 5 The control system for a singleaxis gimbal mounted propulsion system needs to be sophisticated to handle real-time adjustments to the engine's orientation and thrust vector. Developing robust control algorithms and ensuring accurate sensor inputs and actuator responses is a significant challenge.…”

Section: Problems Associated With Single-axis Gimbal Mounted Propulsi...mentioning

confidence: 99%

“…With potential applications ranging from military aviation to civilian sectors, the adoption of these innovative propulsion systems is poised to revolutionize the future of flight. 5 As research and development in this field continue, we can anticipate even greater advancements and a transformative impact.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Thrust Control: Unleashing the Potential of Single-Axis Gimbal Mounted Propulsion Systems for Aircraft

2023

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Single-axis gimbal mounted propulsion systems for aircraft are advanced technologies that provide dynamic control over the direction of thrust, independent of the aircraft's orientation. By utilizing a gimbal mechanism, actuators, and a sophisticated control system, these systems enable precise adjustments to the engine's orientation and thrust vector direction. This capability enhances maneuverability, enables vertical take-off and landing, facilitates hovering, and allows for advanced aerial maneuvers. The decoupling of the thrust vector from the aircraft's orientation offers significant advantages in military applications, search and rescue operations, and civilian sectors such as urban air mobility and aerial surveying. However, the development and implementation of these systems come with engineering challenges, control system complexity, weight considerations, and certification requirements. Artificial intelligence plays a crucial role in optimizing performance, enabling adaptive control, processing sensor data, and enhancing decision-making capabilities. Overall, single-axis gimbal mounted propulsion systems have the potential to revolutionize aircraft capabilities and pave the way for innovative advancements in aviation.

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Research on propagation mechanism for gyro installation error of dual-axis rotational inertial navigation system in UAV coordinated U-turn

Zhao,

Wang,

et al. 2024

Measurement

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A High-Precision Motor Control Method for Tracking Wandering Azimuth Coordinate System Based on Tri-Axis Rotational Inertial Navigation System (RINS)

Cited by 5 publications

References 20 publications

A multi-axis alternating continuous rotation scheme for tri-axis rotational inertial navigation system (RINS) with fiber optic gyro

A multi-axis alternating continuous rotation scheme for tri-axis rotational inertial navigation system (RINS) with fiber optic gyro

Dynamic Thrust Control: Unleashing the Potential of Single-Axis Gimbal Mounted Propulsion Systems for Aircraft

Research on propagation mechanism for gyro installation error of dual-axis rotational inertial navigation system in UAV coordinated U-turn

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