Spacecraft Attitude Maneuver using Two Single-gimbal Control Moment Gyros

Kasai, Shinya; Kojima, Hirohisa; Satoh, Mitsunori

doi:10.2514/6.2012-4960

Cited by 6 publications

(10 citation statements)

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“…They modeled the system as the six degree-of-freedom rigid body spacecraft motion with the flexible structures and used θ -D technique to control it. Using two single-gimbal control moment gyros, an arbitrary rest-to-rest attitude maneuver problem for a satellite was studied by Kasai et al [8]. Gui et al [9] studied the attitude control problem of a spacecraft using two reaction wheels.…”

Section: Introductionmentioning

confidence: 98%

Dynamics and control of a smart flexible satellite moving in an orbit

et al. 2015

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In this paper, the three axes maneuver control and vibration suppression of a smart flexible satellite moving in a circular orbit are studied. First, by using Lagrange-RayleighRitz technique and assumed mode method, the governing equations of a flexible satellite with PZT (lead zirconate titanate) piezoelectric patches are obtained. The flexibility of the appendages and the assumption of a large angle trajectory cause the governing equations to be nonlinear and coupled. The piezoelectric layers, attached to both sides of the appendages, are considered as sensors and actuators. A thorough look at the resulting equations reveals that the flexible satellite dynamics that include the appendage vibrations and rigid maneuver occur in two different time scales. By using the singular perturbation theory, the system dynamics is divided into two fast and slow subsystems. The slow and fast subsystems are associated with rigid motion dynamics and flexible appendages dynamics, respectively. A hybrid controller, which is proposed for use, consists of a variable structure controller (VSC) for maneuvering control of the slow subsystem, and a Lyapunov based controller for vibration suppression of the fast subsystem. The stability of the controllers is studied using the Lyapunov stability theory. Finally, the system behavior is simulated and the simulation results show the efficient performance of the proposed hybrid controller.

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Section: Introductionmentioning

confidence: 98%

Dynamics and control of a smart flexible satellite moving in an orbit

et al. 2015

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“…These sensors were located at strategic points of a human body in order to study the angular velocities and global accelerations of the movement of said body in different situations, from a walk to various inflection types. By obtaining these parameters, the generated moment by the body can be studied; thus, we can analyze possible ways to anticipate a fall, or differentiate between it and bending over [4] through some kind of automation to control, like in some robots or even in satellites [5,6]. Having the data of falls, we can take advantage of the gyroscopic effect to cushion/avoid it, like other studies carried out to improve the position/effort of a person [7,8].…”

Section: Introductionmentioning

confidence: 99%

Angular Moment and Corrective Forces in Human Walking Processes: Sensor and Actuator Analysis

Maciá

Ferrández-Pastor

García‐Chamizo

2019

13th International Conference on Ubiquitous Computing and Ambient ‪Intelligence UCAmI 2019‬

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Taking into account the dynamics of a human body in its daily movement, one can study the forces that are generated in its variations with respect to a normal walk. These forces can be reduced, generating an opposite force through some device if one takes into account that their magnitude is not very large in some cases. This paper outlines results obtained from the sensorization of a human body in uniform movement, and changes in angular velocity and moment of a force produced by different inflections in normal movement. The aim was to calculate the moment of a force thanks to the measured angular velocity, and then study the opposition to this movement by using the produced reaction by the conservation of angular moment (gyroscopic effect). The study was carried out through the positioning of different sensors that were placed to analyze points of interest of the movement. In this study, we were able to appreciate changes in the variables to study up to two orders of magnitude at the generated moment, when the movement went from being uniform, which is equivalent to a walk, to the situation of an inflection, for example, a fall or bending over. With the collected data, the prediction of a fall could be studied and perhaps avoided.

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“…Existing attitude control logics with CMGs are composed of attitude control laws and CMG steering laws [1,2]. According to attitude tracking errors, the desired attitude control torque is computed by the attitude control laws.…”

Section: Introductionmentioning

confidence: 99%

Improved Path Planning and Attitude Control Method for Agile Maneuver Satellite with Double-Gimbal Control Moment Gyros

Cui

et al. 2015

Mathematical Problems in Engineering

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Double-gimbal control moment gyros can implement the satellite attitude maneuver efficiently. In order to reduce the energy consumption of double-gimbal control moment gyros and avoid the singularity state, an attitude maneuver path planning method is proposed by using the improved Fourier basis algorithm. Considering that the choice of the Fourier coefficients is important for the Fourier basis algorithm to converge quickly, a choosing method of the initial Fourier coefficients which can reduce the computational time of the path planning algorithm notably is proposed. Moreover, an attitude-tracking feedback controller based on the Fourier basis path planning algorithm is designed to acquire robustness. Simulation results show that the proposed path planning algorithm can implement attitude maneuver path planning in shortened time. Meanwhile, the feasibility of the attitude-tracking feedback controller which is based on the above path planning algorithm is verified in terms of the low energy consumption, high attitude-tracking precision, and the safe use of double-gimbal control moment gyros.

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Spacecraft Attitude Maneuver using Two Single-gimbal Control Moment Gyros

Cited by 6 publications

References 0 publications

Dynamics and control of a smart flexible satellite moving in an orbit

Dynamics and control of a smart flexible satellite moving in an orbit

Angular Moment and Corrective Forces in Human Walking Processes: Sensor and Actuator Analysis

Improved Path Planning and Attitude Control Method for Agile Maneuver Satellite with Double-Gimbal Control Moment Gyros

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