@techreport{BenekenDihFriedetal.2018, author = {Beneken, Gerd and Dih, Denise and Fried, Adrian and Hauch, Julia and Hummel, Sabine and Junker, Elmar and Karlinger, Peter and K{\"o}ster, Heinrich and Krause, Harald and Muscat, Dirk and Niedermaier, Peter and Sch{\"a}fle, Claudia and Schutter, Sabina and Sigr{\"u}ner, Michael and Stanzel, Silke and Str{\"u}bbe, Nicole and Werndl, Peter and Wirnsberger, Markus and Zentgraf, Peter}, title = {Jahresbericht 2018, Forschung - Entwicklung - Innovation}, organization = {Technische Hochschule Rosenheim}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:861-opus4-12374}, pages = {68}, year = {2018}, abstract = {Mit dem j{\"a}hrlich erscheinenden Forschungsbericht m{\"o}chte die Technische Hochschule Rosenheim einen Einblick in ihre vielf{\"a}ltigen Projekte und Aktivit{\"a}ten der angewandten Forschung und Entwicklung geben. Im Jahresbericht 2018 wird {\"u}ber Vorhaben im Jahr 2018 berichtet.}, language = {de} } @techreport{AckermannAngermeierAueretal.2014, author = {Ackermann, Timo and Angermeier, Martin and Auer, Veronika and Beneken, Gerd and Bernhardt, Andreas and Botsch, Rafael and B{\"u}cker, Dominikus and Hager, Ralf and Hauck-Bauer, Eva and Heigl, Martin and Hirschm{\"u}ller, Sebastian and H{\"o}llm{\"u}ller, Janett and Karlinger, Peter and K{\"o}ster, Heinrich and Krause, Harald and Kucich, Martin and Matthias, Kira and Patzl, Victoria and Pl{\"o}nnigs, Ren{\´e} and Posch, Georg and Schanda, Ulrich and Scheerer, Josua and Schlecht, Johannes and Schmidt, Jochen and Stichler, Markus and Uhl, Cornelius and Viehhauser, Peter and Weber, Gabriel and Wolf, Christopher and Zagler, Stefan and Zentgraf, Peter}, title = {Forschungsbericht 2013}, organization = {Hochschule Rosenheim}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:861-opus4-12324}, pages = {56}, year = {2014}, abstract = {Mit dem j{\"a}hrlich erscheinenden Forschungsbericht m{\"o}chte die Hochschule Rosenheim einen Einblick in ihre vielf{\"a}ltigen Projekte und Aktivit{\"a}ten der angewandten Forschung und Entwicklung geben. Im Forschungsbericht 2013 wird {\"u}ber Vorhaben im Jahr 2013 berichtet.}, language = {de} } @article{KarlingerZillmerZentgrafetal.2016, author = {Karlinger, Peter and Zillmer, Markus and Zentgraf, Peter and W{\"u}rtele, Martin and Grimm, G{\"u}nther}, title = {Neue Regler f{\"u}r Plastizfierungen an Spritzgießmaschinen}, series = {Zeitschrift Kunststoffe}, journal = {Zeitschrift Kunststoffe}, year = {2016}, language = {de} } @article{ZillmerKarlingerZentgrafetal.2016, author = {Zillmer, M. and Karlinger, Peter and Zentgraf, Peter and W{\"u}rtele, M. and Grimm, G. and Wolf, W.}, title = {Vorausschauende Zylindertemperierung}, series = {Kunststoffe}, journal = {Kunststoffe}, number = {10/2016}, year = {2016}, language = {de} } @techreport{AlversammerAngermeierBernhardtetal.2013, author = {Alversammer, Wolfgang and Angermeier, Martin and Bernhardt, Andreas and Bischof, Wolfgang and Botsch, Rafael and Eierle, Benno and Feldmeier, Franz and Hack, Andreas and Hauck-Bauer, Eva and Heigl, Martin and K{\"o}lzer, Brigitte and K{\"o}ster, Heinrich and Krose, Eva and Leps, Torsten and Mennicken, Titus and Muscat, Drik and Ober, Thorsten and Ott, Robert and Ruminski, Nils and Seidlmeier, Heinrich and Stauss, Kilian and Stetter, Andrea and Viehhauser, Peter and Wambsganß, Mathias and Zagler, Stefan and Zauner, Johannes and Zentgraf, Peter}, title = {Forschungsbericht 2012}, organization = {Hochschule Rosenheim}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:861-opus4-12338}, pages = {48}, year = {2013}, abstract = {Mit dem j{\"a}hrlich erscheinenden Forschungsbericht m{\"o}chte die Hochschule Rosenheim einen Einblick in ihre vielf{\"a}ltigen Projekte und Aktivit{\"a}ten der angewandten Forschung und Entwicklung geben. Im Forschungsbericht 2012 wird {\"u}ber Vorhaben im Jahr 2012 berichtet.}, language = {de} } @inproceedings{Zentgraf2017, author = {Zentgraf, Peter}, title = {ANALYTICAL ATTITUDE DETERMINATION FROM A SPECIFIC RATE PROFILE}, series = {40th ANNUAL AAS GUIDANCE AND CONTROL CONFERENCE, Breckenridge, Colorado, USA}, booktitle = {40th ANNUAL AAS GUIDANCE AND CONTROL CONFERENCE, Breckenridge, Colorado, USA}, year = {2017}, abstract = {The problem dealt with in this paper is the analytical determination of the attitude of a rigid body which undergoes a given rate profile. Usually the attitude is determined by solving the kinematic differential equation numerically. For long lasting movements the outcome can cost computation time plus encountered losses in accuracy, which can be disturbing especially in optimization problems. This contribution solves the kinematic differential equation for certain rate profiles exactly and compares the results in accuracy and computation time with the standard procedures.}, language = {en} } @inproceedings{ZentgrafBergeChassetetal.2010, author = {Zentgraf, Peter and Berge, S. and Chasset, C. and Filippi, H. and Gottzein, E. and Guti{\´e}rrez-Ca{\~n}as, I. and Hartrampf, M. and Krauss, P. A. and Kuehl, C. and L{\"u}bke- Ossenbeck, B. and Mittnacht, M. and Montenbruck, O. and M{\"u}ller, C. and Rueda Boldo, P. and Truffi, A.}, title = {PREPARING THE GPS-EXPERIMENT FOR THE SMALL GEO MISSION}, series = {33rd ANNUAL AAS GUIDANCE AND CONTROL CONFERENCE}, booktitle = {33rd ANNUAL AAS GUIDANCE AND CONTROL CONFERENCE}, editor = {American Astronautical Society,}, year = {2010}, abstract = {This paper deals with the preparation of the Small GEO mission and the accommodation of a GPS receiver as an experiment. The expected benefits of using the GPS receiver for Small GEO are explained. The feasibility of using GPS for position determination is investigated by simulation using a MosaicGNSS receiver, which was stimulated by a Spirent RF signal generator. A procedure, how to evaluate flight data on ground is outlined. Success criteria of the experiment and the minimal size of the downlink stream required and reserved for the receiver TM are presented.}, language = {en} } @misc{ZentgrafErb2009, author = {Zentgraf, Peter and Erb, S.}, title = {IMPACT OF ELECTRIC PROPULSION UNCERTAINTY ON ORBIT PREDICTION}, editor = {Zentgraf, Peter}, year = {2009}, abstract = {This paper analyses the achievable performance of the orbit prediction for a geostationary satellite using clusters of electrical propulsion (EP) thrusters for station-keeping and a star tracker based attitude control system. The challenge in the orbit prediction is that the real electrical propulsion thrust is known with limited accuracy only. In combination with thrust pointing errors, these inaccuracies can accumulate to large orbit position errors during long low thrust burn arcs. The discrepancy between real and predicted satellite position is determined in terms of probability and as a worst case scenario.}, language = {en} } @inproceedings{ZentgrafReggio2009, author = {Zentgraf, Peter and Reggio, D.}, title = {MAGNETIC RATE DAMPING FOR SATELLITES IN LEO}, series = {32nd ANNUAL AAS GUIDANCE AND CONTROL CONFERENCE}, booktitle = {32nd ANNUAL AAS GUIDANCE AND CONTROL CONFERENCE}, year = {2009}, abstract = {This article deals with the topic of damping the rates of a satellite after separation from the launcher by sensing the rates with magnetometers or gyroscopes and actually damping it with torquerods or thrusters. In literature problems of this kind are treated by linearization which is not adequate here due to the high nonlinearity of the problem caused by the high gyroscopic torque. This paper addresses the observability and controllability of the rate dynamics for symmetric satellite bodies. Furthermore, robust stability of any bodies is investigated by means of the Krasovskii-LaSalle principle which is a variant of Ljapunov's Second Method. It is found that - apart from one exception - the system is robustly stable for certain conditions depending only on the gain matrix and not depending on the orbit, moments of inertia or initial conditions. The exception is that of the intuitive case of an equator type orbit, in which the satellite rotates around the magnetic field lines, in this case the satellite's rate cannot be damped. Several design configurations are analysed with respect to their performance and cost: Rate damping with magnetometers or gyroscopes as sensors, and torquerods and thrusters as actuators. The results are evaluated with respect to the time to reach the desired rate, the propellant and the power equivalent battery mass used. The goal is to use the results to allow an AOCS equipment and architecture trade-off at an early project phase. The design of the rate damping control of the SWARM project is presented as an example and demonstrated with simulations.}, language = {en} } @inproceedings{ZentgrafBergeEdforsetal.2009, author = {Zentgraf, Peter and Berge, S. and Edfors, A. and Olsson, T. and Pionnier, G. and Bj{\"o}rk, M. and Chasset, C. and Nordeb{\"a}ck, T. and Rieschel, M. and L{\"u}bke- Ossenbeck, B.}, title = {Advanced AOCS Design on the First Small GEO Telecom Satellite}, series = {60th International Astronautical Congress, Oct. 12 -16, 2009, Daejon, South Korea}, booktitle = {60th International Astronautical Congress, Oct. 12 -16, 2009, Daejon, South Korea}, year = {2009}, abstract = {The advanced Attitude and Orbit Control System (AOCS) design of the Small GEO platform is now being adapted for the first commercial mission. The Small GEO telecommunications satellite is a new development to fill a niche in the telecom industry for small platforms weighing about 1.5 tonnes and targeting payloads of 300 kg and 3 kW. The first mission will launch into Geostationary Transfer Orbit (GTO). Small GEO is being developed by a Consortium led by OHBSystem AG. The Swedish Space Corporation is a partner in the Consortium and supplies the AOCS and Electric Propulsion (EP) subsystems. The project is currently in Phase C and the first mission will fly in 2012. This article gives an overview of the AOCS development status. The AOCS architecture is a three-axis stabilized system using reaction wheels for attitude control, star trackers for attitude determination, and EP for orbit control. The AOCS software is being developed using model-based design techniques and test driven development. Results from subsystem level testing of flight code will be presented. The AOCS design is characterized by a number of advances in technology beyond traditional telecom satellite designs. Perhaps the largest deviation from a traditional design is complete reliance on EP for orbit control. Angular momentum management of the reaction wheels relies solely upon EP in the nominal modes. The EP is not used in the safe modes and therefore a cold gas system is included On-board. The cold gas system uses Xenon, the same fuel used by the EP. Another advance is the reliance upon APS-based star trackers. APS (Active Pixel Sensor) star trackers have a number of advantages over their CCD-based cousins in terms of robustness. The traditional fine sun sensor is simplified to a fault tolerant system of solar cells giving low, but more than adequate, accuracy. In addition, a GPS sensor will be flown on-board as an experiment.}, language = {en} }