A survey on design of reaction spheres and associated speed and orientation measurement technologies

Zhang, Jie; Yuan, Liming; Chen, Silu; Liang, Yusheng; Huang, Xiaolu; Zhang, Chi; Yang, Guilin

doi:10.1016/j.isatra.2019.09.014

Cited by 15 publications

(4 citation statements)

References 35 publications

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“…. Ω = T e − T d = (e a i a + e b i b + e c i c )/Ω − T d (1) where m is the mass of the rotor; f x and f y are the bearing force of the AMB in the x-axis and y-axis, respectively; k ix , k iy , k x and k y are the current stiffness and displacement stiffness of the AMB, respectively;…”

Section: Force Analysis Of the Mlrwmentioning

confidence: 99%

See 1 more Smart Citation

Loss Estimation and Thermal Analysis of a Magnetic Levitation Reaction Flywheel with PMB and AMB for Satellite Application

Tong

Liu

et al. 2022

Energies

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The magnetic levitation reaction flywheel (MLRW) is a novel actuator of spacecraft attitude control because of its significant advantages, including lack of friction and active suppression of vibration. However, in a vacuum environment, the poor heat dissipation conditions make it more sensitive to various losses and rises in temperature. Therefore, increasing temperature is the key issue for components used in space. In this study, the losses of the three kinds of heat-generating areas in the MLRW, namely, the passive magnetic bearing (PMB), the active magnetic bearing (AMB) and brushless DC motor (BLDCM), were analyzed and calculated. Based on the electromagnetic field theory, the loss model of PMB was proposed. Based on the finite element method (FEM) and Bertotti model, the loss power of the AMB and the BLDCM was obtained. The calculated loss values were brought into the FEM to calculate the temperature field distribution of the MLRW system. Then, the key factors affecting the heat dissipation of the flywheel were obtained by combining thermal network analysis with the temperature field distribution. Finally, a prototype was fabricated. The maximum estimated and experimental temperatures were 34.8 °C and 36.8 °C, respectively, both at the BLDCM stator. The maximum error was 5.4%, which validates the calculated model.

show abstract

Section: Force Analysis Of the Mlrwmentioning

confidence: 99%

“…Reaction flywheels supported by AMBs and PMBs are very important apparatus in spacecraft attitude adjustment [1,2]. Compared with the traditional reaction flywheel supported by mechanical bearings, the MLRW has the advantages of not making contact, not requiring lubrication, and active vibration suppression [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Loss Estimation and Thermal Analysis of a Magnetic Levitation Reaction Flywheel with PMB and AMB for Satellite Application

Tong

Liu

et al. 2022

Energies

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“…External actuators include cold gas thrusters, magnetic torquers and gravity gradient booms [2] while internal actuators are represented in the momentum exchange devices 2 (MED). Momentum wheels, reaction wheels, control momentum gyros, and reaction spheres are the four types of MEDs depending on their operating principles [3,4].…”

Section: Introductionmentioning

confidence: 99%

Comparative study of control moment gyroscopes’ steering laws

Gamal,

Desouky,

Ashry

et al. 2024

J. Phys.: Conf. Ser.

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The Control Moment Gyroscope (CMG) is superior to other attitude actuators in terms of torque amplification capabilities. Its operating margin is hampered by the singularity problem, which needs the proper selection of a steering law. This study analyses five steering laws for avoiding or escaping different types of singularity; pseudoinverse, pseudoinverse with the null space approach, singularity robust (SR) inverse, generalized SR inverse, and new generalized SR inverse. This analysis measures the effectiveness of these laws in terms of attitude performance and command generation. Simulation results are provided to show the performance of each steering law, with an emphasis on the benefits and drawbacks of each steering law.

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“…The development of hybrid drive multi-DOF motors has gradually become a research trend [20]. The hybrid driven multi-DOF motor mainly combines various drive modes, and hence it does not have the problems of the conventional one drive mode.…”

Section: Introductionmentioning

confidence: 99%

Design and Analysis of Electromagnetic-Piezoelectric Hybrid Driven Three-Degree-of-Freedom Motor

Guo

Wang

et al. 2020

Sensors

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Multi-DOF movement actuators are widely used in industry, mainly in the fields of bionics and precision machining. With the non-stop improvement of modern-day industry, the requirements for the precision, integration and flexibility of multi-degree-of-freedom motion actuators in the industrial field have progressively increased. This paper presents a novel electromagnetic–piezoelectric hybrid driven three-degree-of-freedom motor. The driving method of the hybrid drive motor can be divided into electromagnetic driving and piezoelectric driving. The motor structure and working principle are analyzed. The structural parameters are obtained by modal analysis of the stators and rotor. The rationality of the stator structure is proved by using the transient analysis of the piezoelectric stators. The magnetic field characteristics of the motor are analyzed by both analytical method and the finite element method. The contact pressure and displacement between the piezoelectric stator and the rotor are analyzed by the analytical method. A motor drive model is established, which provides the basis for motor optimization design and control. Finally, a motor prototype and its test platform were built, and the experimental results are presented to verify the rationality of the motor design.

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A survey on design of reaction spheres and associated speed and orientation measurement technologies

Cited by 15 publications

References 35 publications

Loss Estimation and Thermal Analysis of a Magnetic Levitation Reaction Flywheel with PMB and AMB for Satellite Application

Loss Estimation and Thermal Analysis of a Magnetic Levitation Reaction Flywheel with PMB and AMB for Satellite Application

Comparative study of control moment gyroscopes’ steering laws

Design and Analysis of Electromagnetic-Piezoelectric Hybrid Driven Three-Degree-of-Freedom Motor

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