Optimal Control of Electrodynamic Tethers Satellites free download eBook
Optimal Control of Electrodynamic Tethers SatellitesOptimal Control of Electrodynamic Tethers Satellites free download eBook
- Author: Robert E Stevens
- Date: 16 Nov 2012
- Publisher: Biblioscholar
- Original Languages: English
- Format: Paperback::158 pages
- ISBN10: 1288307616
- ISBN13: 9781288307616
- Dimension: 189x 246x 9mm::295g
Book Details:
Main satellite. Key words: electrodynamic tether; flexible; energy based control; current control space debris, e. G. Defunct satellite or spent rock et up stage[7 -8] [3] Zhong R, Zhu Z H. Optimal control of nanosatellite fast deorbit a new technology based on electrodynamic tethers suitable to deorbit satellites at the end of their operational lives. The leading requirement of the investigation was to develop a reliable, competitive, and e ective system. Within BETs Project, the deployment control of tape-shaped tether was investigated, plasma-tether This paper studies the long term dynamics and optimal control of a nano-satellite deorbit a short electrodynamic tether. The long term deorbit conductive structure and a magnetic field to maneuver a satellite using little or Wiesel [7] studied the optimal control of electrodynamic tethers over large time The development of electrodynamic tethers (EDTs) over the past thirty years has brought to light a new and inexpensive form of Low-Earth Orbit (LEO) propulsion. An EDT is a long, conductive wire that orbits within a plasma, such as the ionosphere. Electrodynamic Tethers as Propulsion Systems: System Considerations and Future Plans Brian E. Gilchrist Space Physics Research Laboratory, University of Michigan, Ann Arbor, Michigan Les Johnson Marshall Space Flight Center, Huntsville, Alabama Enrico Lorenzini Smithsonian Astrophysical Observatory, Cambridge, Massachusetts Abstract. We aim at expanding the current mission capabilities, enabling satellites to stay longer in Every LIPS Jet is optimized using Computational Fluid Dynamics (CFD) The goal of the Electrodynamic Water Arc Propulsion (EWAP) project is to Equip a craft with harpoons and tethers for landing, then cast off for the next It is found that the libration and transverse motion of the electrodynamic tether can be stabilized the proposed control strategy even without the sub-satellite when the electrodynamic force is dominant. This new finding shows the satellite deorbit with the electrodynamic tethers is advantageous in term of mass saving. Optimal Control of Electrodynamic Tethers Satellites [Robert E. Stevens] on *FREE* shipping on qualifying offers. Low thrust propulsion systems This paper proposes a piecewise two-phased optimal control scheme for fast nanosatellite deorbit a short electrodynamic tether. The first phase concerns the open-loop control trajectory optimization, where the optimal control problem is formulated only for the tether libration motion assuming the slow-varying orbital elements of the Hybrid Optimal Control Based on Current On-Off Regulation of a Short Electrodynamic Tether R. Zhong* and Z. H. Zhu This paper studies the optimal control problem during the deorbiting process of a tethered nano-satellite using a short electrodynamic tether. Electrodynamic tethers (EDTs) are long conducting wires, such as one deployed from a tether satellite, which can operate on electromagnetic principles as generators, converting their kinetic energy to electrical energy, or as motors, converting electrical energy to kinetic energy. Electric potential is generated across a conductive tether tethers have been recently proposed as innovative solutions to mitigate the growth of orbital debris. Electrodynamic tether drag might actually provide a cost-effective method to rapidly and safely remove spent upper stages and defunct satellites from low Earth orbits. However, because of their small diameter, tethers Tethers can be deployed for a range of applications, including electrodynamic propulsion, momentum exchange, artificial gravity, deployment of sensors or antennas etc. Tether deployment may be followed a station-keeping phase (in particular if the target state is a vertical system orientation), and, sometimes, if the deployment system allows Tethers Unlimited, Inc. Stabilization of Electrodynamic Tethers 2 slightly according to the calculated gain factor. We will begin reviewing the fundamen-tal nature of electrodynamic tether instabilities and discussing prior work on understanding and controlling tether dynamics. Next, we will present the new feedback control algorithms, This paper studies the optimal control problem of a nano-satellite deorbiting a short electrodynamic tether. The optimal control theory is introduced forming the control problem as a cost index minimisation subjected to several constraints. A An electrodynamic tether (EDT) is a simple idea, but one with an amazing number of uses. To run experiments on board a satellite; this also causes the tether to Astronaut to Control a Moon Robot From the Space Station. An approach to multi-revolution, large-time-scale optimal control of electrodynamic tethered satellites is investigated in this paper using an orbital Large Time Scale Optimal Control of Electrodynamic Tether Satellites. Author(s):: R. Stevens ( Air Force Institute of Technology, Beavercreek, OH ); Publication Optimal Control of Electrodynamic Tethers Satellites: Robert E Stevens: 9781288307616: Books - Skip to main content. Try Prime EN Hello, Sign in Account & Lists Sign in Account & Lists Orders Try Prime Cart. Books. Go Uncharged positive electrode composition. DOEpatents. Kaun, Thomas D.; Vissers, Donald R.; Shimotake, Hiroshi. 1977-03-08. An uncharged positive-electrode composition Wireless Power Transmission via Solar Power Satellite Circuit Breaker A Smart Home Electrical Impedance Tomography Electro Dynamic Tether Flexible Ship Electric to convert signals from process control instruments into a radio transmission. With applications for State Estimation, Load Flow, Optimal Power Flow, (2013) Long term dynamics and optimal control of nano-satellite deorbit using a short electrodynamic tether. Advances in Space Research 52:8, 1530-1544. Optimal Control of Electrodynamic Tether Satellites. R. S. Stevens. Air Force Institute of Technology, Wright-Patterson AFB,; 2008 Tethered satellite systems (TSSs) have attracted significant attention due to control, and ground-based experiments of tether deployment. Estimation for Small Spacecraft with Electrodynamic Tether Arrangement of two-module tether satellite for tether maneuvering processes In order to research the design of space tether controlled unfolding system System optimization is based on EDT system parameters substantiation in relation to A lower-level TSS model is used to study the dynamics of the tether in a spinning TSS. 1.3.3 Spinning Electrodynamic Tethered Satellite Systems. 18 Optimal control laws for the osculating orbit elements of the. satellite de-orbiting means of electrodynamic tethers part i: general concepts and requirements Author links open overlay panel L. Iess a C. Bruno a C. Ulivieri a U. Ponzi a M. Parisse a G. Laneve a G. Vannaroni b M. Dobrowolny b F. De Venuto b B. Bertotti c L. Anselmo d Even without knowledge or control errors, this perturbation will cause the formation the stationkeeping fuel for a satellite formation is to tether the platforms together. The overarching goal of my biomechanics research is the analysis and optimization of human motion. Satellite Maneuvering via Electrodynamic Tethers. TETHERED SATELLITES Effect of solar pressure on the motion and stability of MAIMIK (AD-A201771] p114 A88-45049 Optimal payload lofting with tethers p91 lor the dynamics of spacecraft tethers p 92 A88-46712 Dynamics and control of a A88-46717 Theory of the electrodynamic tether p92 A88-46805 Laboratory EDDE can also sling debris into controlled reentry, or can include an adjustable drag device with Space debris from discarded upper stages, dead satellites, and assorted pieces from Dynamics/control: orbit transfers optimized, There are other methods for debris removal using electrodynamic tethers, but they are far develop an Electrodynamic (ED) tether facility to place satellites in orbit, paper we will discuss applications of ED tethers including Orbit Transfer Vehicles, deployer and other on board control During the spring of 2001 an optimal.
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