Design and Evaluation of Spherical Washout Algorithm for Desdemona Simulator

Wentink, M.; Bles, W.; Hosman, Ruud; Mayrhofer, Michael

doi:10.2514/6.2005-6501

Cited by 16 publications

(10 citation statements)

References 4 publications

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“…Our ambition in this area is to integrate the motion perception model with our pilot control model to allow for complete off-line evaluation of new motion drive algorithms, for example in our Desdemona simulator (see also presentation of Wentink et al, this conference 23 ).…”

Section: B Model Validationmentioning

confidence: 99%

Simulated Decrab Maneuver: Evaluation with a Pilot Perception Model

Groen

Smaïli

Hosman³

2005

AIAA Modeling and Simulation Technologies Conference and Exhibit

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In this simulator study eleven pilots rated their motion perception during a series of decrab maneuvers of a twin-engine passenger aircraft. Platform yaw, sway, and roll motion were varied independently to examine their relative contribution to the pilots' judgements. In one set of conditions, the washout algorithms were bypassed so as to reproduce unfiltered aircraft motion. This was compared with washout-filtered motion in another set of conditions. Moreover, the effect of visual cues was studied by testing the unfiltered motion cues once under simulated VMC, and once under IMC. The results show that the simulation of heading alignment was positively affected by platform sway and roll, and also by the visual stimulus. Platform yaw was poorly recognized, and remained under the perceptual threshold in the presence of platform sway. Interestingly, unfiltered sway motion was perceived as too strong, even though the simulator workspace required downscaling to 70% of the actual aircraft motion. Finally, the subjective data was used to validate our human motion perception model. Due to the fact that the model does not yet account for the observed interaction between sway motion and the perceptual threshold for yaw, the model output did not quantitatively correlate with the magnitude ratings. However, a multiple regression analysis showed that, qualitatively, the model did predict the way pilots interpreted the platform motion. We conclude that better understanding of perceptual thresholds in a flight simulator setting is necessary to enable quantitative analysis of the effectiveness of ground-based motion cues.

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Section: B Model Validationmentioning

confidence: 99%

Simulated Decrab Maneuver: Evaluation with a Pilot Perception Model

Groen

Smaïli

Hosman³

2005

AIAA Modeling and Simulation Technologies Conference and Exhibit

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“…For instance, by exploiting the rotation of the first vertical joint, one can obtain large lateral displacements along circular trajectories, considerably larger than any achievable linear trajectory. This motivated us to design the high-pass filters for the linear acceleration in cylindrical coordinates, similarly to what proposed for the spherical washout filter [18] implemented in the Desdemona motion simulator developed at TNO [19]. The idea is to keep linear forward and upwards motions unchanged, and replace linear lateral motions with circular motions (i.e., moving on the surface of a vertical cylinder).…”

Section: A High-pass Channelsmentioning

confidence: 98%

A novel framework for closed-loop robotic motion simulation - part II: Motion cueing design and experimental validation

Giordano

Masone

Tesch

et al. 2010

2010 IEEE International Conference on Robotics and Automation

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This paper, divided in two Parts, considers the problem of realizing a 6-DOF closed-loop motion simulator by exploiting an anthropomorphic serial manipulator as motion platform. After having proposed a suitable inverse kinematics scheme in Part I [1], we address here the other key issue, i.e., devising a motion cueing algorithm tailored to the specific robot motion envelope. An extension of the well-known classical washout filter designed in cylindrical coordinates will provide an effective solution to this problem. The paper will then present a thorough experimental evaluation of the overall architecture (inverse kinematics + motion cueing) on the chosen scenario: closed-loop simulation of a Formula 1 racing car. This will prove the feasibility of our approach in fully exploiting the robot motion capabilities as a motion simulator.

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“…On the higher end, the device can be used as a Dynamic Flight Simulator where the gondola is rotated during sustained centrifugation of 3 g. Both modes fail to take advantage of the complete motion space of DESDEMONA, which means that new motion cueing algorithms are under development. One of these new algorithms, the so-called spherical washout, has already been implemented (Wentink et al 2005). As shown in Fig.…”

Section: The Research Facility Desdemonamentioning

confidence: 99%

The DESDEMONA Motion Facility: Applications for Space Research

Bles

Groen

2009

Microgravity Sci. Technol.

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The research facility DESDEMONA features a unique motion platform, combining a fully gimbaled cabin with the capability of producing sustained g-loads. Originally designed for ground-based simulation as well as training of spatial disorientation in aviation, the motion capabilities are also interesting for other areas. In this paper we will provide examples of space-related research questions that can be addressed on DESDEMONA. Some questions are concerned with centrifugation as a means to create artificial gravity. For instance, with its variable radius and gimbaled cabin, DESDEMONA allows for studying possible trade-offs between g-load and angular velocity. Other questions relate to the effects of g-level transitions on the astronauts' well-being and performance. During the last two decades, research at TNO has shown that after prolonged exposure to centrifugation at 3 g astronauts experience the same vestibular adaptation symptoms as observed in real space flight. In DESDEMONA, the hyper-gravity stimulus can be applied and the consequences for control of simulated spacecraft can be examined in the same device. Furthermore, DESDEMONA also provides a 'clinical' tool for vestibular examination of astronauts, and for the provocation and desensitization of motion sickness in unusual G-environments.

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Design and Evaluation of Spherical Washout Algorithm for Desdemona Simulator

Cited by 16 publications

References 4 publications

Simulated Decrab Maneuver: Evaluation with a Pilot Perception Model

Simulated Decrab Maneuver: Evaluation with a Pilot Perception Model

A novel framework for closed-loop robotic motion simulation - part II: Motion cueing design and experimental validation

The DESDEMONA Motion Facility: Applications for Space Research

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