Spherical Magnetic Dipole Actuator for Spacecraft Attitude Control

Chabot, Joshua A.

doi:10.2514/1.g001471

Cited by 13 publications

(5 citation statements)

References 48 publications

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“…Dynamic of a rigid satellite is given by Euler Equation, [11]. The dynamic of a satellite that is expressed in b F is represented in (2).…”

Section: Dynamic and Kinematics Of Spacecraftmentioning

confidence: 99%

“…Ashok et al proposed control moment gyros based attitude control system to achieve time-optimal maneuver for agile (rigid) satellite [1]. Chabot and Schaub presented a spherical actuator for satellite attitude control that covers modeling, simulation of attitude control of a rigid body system motion as well as comparison with a configuration of three reaction wheels [2]. in [3], Stevenson and Schaub used rigid body approach in the attitude control development prior to do testbed experiment of remote electrostatic charge control.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Asymptotic Stability of Quaternion-based Attitude Control System with Saturation Function

Septanto¹,

Suprijanto²

2017

IJECE

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In the design of attitude control, rotational motion of the spacecraft is usually considered as a rotation of rigid body. Rotation matrix parameterization using quaternion can represent globally attitude of a rigid body rotational motions. However, the representation is not unique hence implies difficulties on the stability guarantee. This paper presents asymptotically stable analysis of a continuous scheme of quaternion-based control system that has saturation function. Simulations run show that the designed system applicable for a zero initial angular velocity case and a non-zero initial angular velocity case due to utilization of deadzone function as an element of the defined constraint in the stability analysis.

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“…Dynamic of a rigid satellite is given by Euler Equation, [11]. The dynamic of a satellite that is expressed in b F is represented in (2).…”

Section: Dynamic and Kinematics Of Spacecraftmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Asymptotic Stability of Quaternion-based Attitude Control System with Saturation Function

Septanto¹,

Suprijanto²

2017

IJECE

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show abstract

“…However, in such systems the actuators employed have considered using multiple reaction wheels (RW) and thrusters to perform the maneuvers. In contrast this paper addresses the problem of spacecraft attitude control with a single VSCMG [5], which can be viewed as a hybrid of a RW and a control moment gyro (CMG) [6]. CMGs are known to be more power efficient than RWs while they suffer singularity problems in their control laws; while RWs are not capable of high torque performance and require frequent de-saturation [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Control of a Thrust-Vectoring CubeSat Using a Single Variable-Speed Control Moment Gyroscope

Biggs¹,

Livornese²

2020

Journal of Guidance, Control, and Dynamics

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A minimal actuator design is proposed for orbit-attitude control of a spacecraft. The actuator design includes a single thruster, fixed in the body frame, and a Variable Speed Control Moment Gyro (VSCMG) used for thrust-vectoring. It is known that the full-attitude cannot be controlled using a single VSCMG, but that a single axis is controllable. This paper develops a nonlinear control that is able to vector the thruster at discrete intervals or continuously. The closed-loop stability of the system is proved using Lyapunov stability theory for each control law. These control laws could enable high-manoeuvrability of CubeSats, utlizing either a single chemical (impulsive) or electric thruster (continuous). The controls are demonstrated, in simulation, with an application to a 12U CubeSat rendezvous utilizing a single throttable electric thruster.

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“…Compared with the traditional multi-DOF motion device, the permanent magnet spherical motor (PMSM) has advantages of small size, light weight, fast response and high positioning accuracy [2]. In the system of multi-DOF motion, such as robot joint, satellite attitude control, the panoramic camera system and power-assisted wheelchair, PMSM has broad application prospects [3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Dynamic analysis and current calculation of a permanent magnet spherical motor for point‐to‐point motion

Guo

Shen

Wang

et al. 2019

IET Electric Power Applications

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Point-to-point (PTP) motion of the end effector is an essential part for using robot manipulators to perform precision machining task. Traditionally, it is implemented by several motors with complex transmission mechanism, which causes slow responses, low positioning precision and dynamic performance. Therefore, dynamics analysis and modified electrifying method of a permanent magnet spherical motor (PMSM), which can provide up to three degrees-of-freedom independently for PTP motion is presented in this study. First, a new inverse kinematics method for solving PMSM's rotation angle using a crossproduct between two points is proposed. Through dynamics analysis, the control torque is designed by using sinusoidal function to plan the PTP motion. Second, a modified electrifying method by combined coils has been proposed based on the currenttorque equation, which deduced the calculation burden by reducing the dimensions of characteristic matrix. Finally, the simulations and experimental results show that PTP motion trajectory planning based on sinusoidal function and the modified electrifying control method can not only reduce the torque disturbance and increase the electromagnetic torque, but also has the advantages of relatively simple control and better tracking control performance.

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Spherical Magnetic Dipole Actuator for Spacecraft Attitude Control

Cited by 13 publications

References 48 publications

Asymptotic Stability of Quaternion-based Attitude Control System with Saturation Function

Asymptotic Stability of Quaternion-based Attitude Control System with Saturation Function

Control of a Thrust-Vectoring CubeSat Using a Single Variable-Speed Control Moment Gyroscope

Dynamic analysis and current calculation of a permanent magnet spherical motor for point‐to‐point motion

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