SIVOR: A Testbed for the Evaluation of On-Off Valves on an F16 Airplane - Viability Analysis

Guilherme Sartori Natal
Instituto Tecnológico de Aeronáutica, São José dos Campos, SP, Brazil

Emilia Villani
Instituto Tecnológico de Aeronáutica, São José dos Campos, SP, Brazil

Petter Krus
Department of Management and Engineering Fluid and Mechatronic Systems, Linköping University, Sweden

Ladda ner artikelhttp://dx.doi.org/10.3384/ecp1815617

Ingår i: WIEFP2018 – 4th Workshop on Innovative Engineering for Fluid Power, November 28-30, Sao Paulo, Brazil

Linköping Electronic Conference Proceedings 156:4, s. 17-21

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Publicerad: 2018-12-10

ISBN: 978-91-7685-136-4

ISSN: 1650-3686 (tryckt), 1650-3740 (online)


In this paper, the viability for the utilization of the SIVOR (Simulador de Voo Robótico – Robotic Flight Simulator) as a testbed for the evaluation of the dynamics changes caused by the replacement of conventional servovalves by on-off valves on an F16 airplane will be analyzed. The current version of the SIVOR consists of an industrial robotic arm that carries a cabin which contains a seat, a curved 55-inches TV, a joystick, a throttle stick, pedals and a black cover to avoid external interferences from the peripheral vision, which can break the immersion of the simulation. The replacement of conventional servovalves by on-off valves has been considered in order to increase the energy efficiency of the airplane hydraulic actuators. However, on-off valves might cause undesirable effects on the flight dynamics. Therefore, this replacement must be adequately evaluated through simulations before being tested on an actual airplane. In order to conclude if the SIVOR is a viable solution for this analysis or not, the necessary workspace for the simulation to be representative will be defined. This study will consist of a comparison between the linear accelerations and angular velocities sensed by a pilot inside the airplane and inside the SIVOR cabin, which are estimated through vestibular system models. The SIVOR will be considered viable if it is able to provide a workspace that generates a small enough motion sensation error between the F16 airplane and the simulator cabin.


Robotics, Aircraft actuation systems, Efficiency, On/off valves, Hydraulic systems


[1] Achten, P. “Convicted to innovation in fluid power”, Proceedings of the Institute of Mechanical Engineers, Part I: Journal of Systems and Control Engineering. Volume 224, Number 6, pp 619–621, 2010.

[2] Locateli, C.C., Teixeira, P.L., De Pieri, E.R., Krus, P., De Negri, V.J. “Digital hydraulic system using pumps and on/off valves controlling the actuator”, Proceedings of the 8th FPNI Ph.D Symposium on Fluid Power, Jun. 2014.

[3] Scheidl, R.; Linjama, M.; Schmidt, S. “Is the future of fluid power digital?”, Proceedings of the Institution of Mechanical Engineers, Part I: Journal of Systems and Control Engineering, Volume 226, Number 6, pp. 721-723, 2012.

[4] Heitzig, S., Sgro, S., Theissen, H. “Energy efficiency of hydraulic systems with shared digital pumps”, International Journal of Fluid Power, Volume 13, pp. 49-58, 2012.

[5] Linjama, M., Vihtanen, H.-P., Sipola, A., Vilenius, M. “Secondary controlled multi-chamber hydraulic cylinder”, The 11th Scandinavian International Conference on Fluid Power. Linköping, Sweden, Jun. 2009.

[6] Huova, M.; Laamanen, A. “Control of three-chamber cylinder with digital valve system”, Proceedings of The Second Workshop on Digital Fluid Power, pp. 94-105, Nov. 2009.

[7] Sartori-Natal, G., Hernandez-Arjoni, D., De Oliveira, W.R., Boulhosa-Rodamilans, G., Silveira, L., Da Silva, E.T., Villani, E., Gonzaga-Trabasso, L. “Implementation analysis of a washout filter on a robotic flight simulator - A case study”, Journal of Aerospace Technology and Management, Volume 11, 2019 (in press).

[8] Schmidt, S.F., Conrad, B. “Motion drive signals for piloted flight simulators”, NASA Report, CR-1601, 1970.

[9] Fernandez, C., Goldberg, P. “Physiology of peripheral neurons innervating semi-circular canals of the squirrel monkey II: Response to sinusoidal stimulation and dynamics of peripheral vestibular system”. Journal of Neurophysiology, Volume 34, Number 4, pp. 661-675, 1971.

[10] Telban, R., Cardullo, F. “Motion cueing algorithm development: Human-centered linear and nonlinear approaches”, NASA Langley Research Center. Technical Report CR-2005-213747, 2005.

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