Self-excited oscillation of spinning solar sails utilizing solar radiation pressure
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https://doi.org/10.1007/s42064-018-0047-4
Self-excited oscillation of spinning solar sails utilizing solar radiation pressure Yuki Takao1 (B), Osamu Mori2 , and Jun’ichiro Kawaguchi2 1. Department of Aeronautics and Astronautics, The University of Tokyo, Tokyo 113-8654, Japan 2. Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
ABSTRACT The present paper proposes a control method to excite spinning solar sail membranes for
KEYWORDS solar sail
three-dimensional use. Using optical property switching, the input is given as the change
solar radiation pressure
in magnitude of the solar radiation pressure. The resonance point of this system varies
vibration mode
with the vibration state due to its nonlinearity and the change in equilibrium state. To
self-excited oscillation
deal with this, a state feedback control law that automatically tracks the resonance point
mechanical resonance
is developed in the present study. The proposed method enables decentralized control of
decentralized control
the actuators on the sail, each of which determines the control input independently using only the information of vibration state. The proposed method is validated using numerical simulations. The results show that the nonlinear system behaves differently from the linear system, and the vibration grows using the decentralized control regardless of resonance point variation.
Research Article Received: 01 December 2018 Accepted: 25 February 2019 © Tsinghua University Press
2019
1
Introduction
As a fuel-free propulsion system, the study and technology of solar sails have developed rapidly in recent decades. The applications of photon propulsion, for example, include interplanetary rendezvous [1], planetcentered orbits [2], heliocentric displaced orbits [3], and station keeping [4]. A study of the GeoSail mission examined the concept of Earth’s magnetotail observation using a Sun-synchronous orbit achieved by a solar sail [5]. Solar radiation pressure was used as the energy source of propulsion in these studies. In addition, solar radiation pressure can also be effective for fuel-free attitude control [6]. Research on coupled attitude-orbit control of a solar sail using solar radiation pressure has recently been conducted, for example, in Ref. [7]. In addition, the understanding of solar sail structure is necessary because the solar sail membrane is so flexible that it deforms easily. The influence of solar sail membrane vibration on attitude and orbital dynamics was investigated in Ref. [8]. In accordance with the development of research, many solar sail missions have been launched in recent years.
B
[email protected]
In 2010, the Japan Aerospace Exploration Agency (JAXA) launched the solar sail demonstrator IKAROS. IKAROS accomplished all its missions, demonstrating the fundamental technologies for solar sailing for the first time in the world [9]. The Planetary Society’s LightSail 2 is scheduled to launch early in 2019, in an attempt to show the effec
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