Agile and Precise Attitude Switching Maneuver of Flexible Spacecraft based on Nonstationary Frequency-Shaped Robust Control

Ikeda, Ryota; Takahashi, Masaki

doi:10.1299/jsdd.5.805

Cited by 2 publications

(2 citation statements)

References 13 publications

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“…Vibration reduction of the flexible spacecraft has always been of critical concern to researchers; in particular, when the attitude-switching of the spacecraft is done in an agile and precise manner, the controllers need to acquire a high-speed and precise attitude-switching maneuver during the execution. 1 Obviously, for precise pointing of the flexible spacecraft, not only the vibration suppression of the flexible appendages, such as the rotating manipulator, but also the mitigation of the quasi-periodic disturbance caused by the existing coupling between the spacecraft and manipulator motion are necessary. 2…”

Section: Introductionmentioning

confidence: 99%

Semi-physical experimental study of adaptive disturbance rejection filter approach for vibration control of a flexible spacecraft

Chu

Cui

Ren

et al. 2015

Proceedings of the Institution of Mechanical Engineers, Part G:

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Adaptive disturbance rejection filter (ADRF) approach, an active vibration control for flexible spacecraft, is developed and its parameters are identified using a closed-loop system method. Particularly, semi-physical experimental study of a maneuvering spacecraft equipped with a flexible manipulator is implemented to demonstrate the improvement of the attitude control performance. The control system consists of two main parts: (1) optimal input shaper is applied to the flexible manipulator to suppress the vibration and alleviate the effect of the vibration on the spacecraft; (2) ADRF is presented to mitigate the equivalent periodic disturbance caused by the nonlinear coupling between the spacecraft motion and the manipulator vibration. The disturbance frequency adaptation tracks the frequency of the periodic disturbance using adaptive notch filter, and the obtained frequency is then fed to disturbance rejection filter. The ADRF approach can provide optimal sets of gains based on the characteristics of the system. The semi-physical experimental results show that the frequency tracking method works quite well to be used in a real-time controller. The results also indicate that the ADRF can provide significant vibration reduction and improve the attitude control accuracy of the spacecraft body.

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Section: Introductionmentioning

confidence: 99%

Semi-physical experimental study of adaptive disturbance rejection filter approach for vibration control of a flexible spacecraft

Chu

Cui

Ren

et al. 2015

Proceedings of the Institution of Mechanical Engineers, Part G:

View full text Add to dashboard Cite

show abstract

“…For an example, ASTRO-G mission will require the high speed and precise attitude switching maneuver that changes 3 degrees in 15 seconds while keeping the attitude error at less than 0.005 degrees during the observation [1]. However, when the attitude of spacecraft is quickly changed, the vibration of flexible appendages become not ignorable, therefore, the vibration control is necessary for the precise pointing.…”

Section: Introductionmentioning

confidence: 99%

Vibration Control of Maneuvering Spacecraft with Flexible Manipulator Using Adaptive Disturbance Rejection Filter and Command Shaping Technology

Chu

Cui

2012

2012 Sixth International Conference on Internet Computing for Science and Engineering

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In order to satisfy the requirement of agile and precise performance of flexible spacecraft during an orientating maneuver with a large angle of rotation, an Adaptive Disturbance Rejection Filter (ADRF) combined with Optimal Input Shaping (OIS) control law is developed for a rigid space platform with flexible manipulator. OIS based smoothing method is applied to the flexible manipulator to suppress the vibrating motion of the flexible appendage and alleviate effect of it on the platform primarily. Furthermore, the mitigation of periodic disturbance is caused by the excitation of flexible appendages.The mitigation is studied by disturbance-rejection filter. The filter considers the inevitable existence of nonlinear coupling between the platform motion and manipulator vibration motion, the disturbance frequency is an important factor need to be intensively studies. We present an Adaptive Notch Filter(ANF) that is based on close-loop system identification method. The filter helps identify the disturbance frequency and update the parameters of the DRF adaptively. Simulation results confirm the ability of the proposed controller in high-speed and precise attitude switching maneuver while suppressing the manipulator vibration.

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Agile and Precise Attitude Switching Maneuver of Flexible Spacecraft based on Nonstationary Frequency-Shaped Robust Control

Cited by 2 publications

References 13 publications

Semi-physical experimental study of adaptive disturbance rejection filter approach for vibration control of a flexible spacecraft

Semi-physical experimental study of adaptive disturbance rejection filter approach for vibration control of a flexible spacecraft

Vibration Control of Maneuvering Spacecraft with Flexible Manipulator Using Adaptive Disturbance Rejection Filter and Command Shaping Technology

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