Evaluation of Vestibular Thresholds for Motion Detection in the SIMONA Research Simulator

Heerspink, Harm; Berkouwer, Walter; Stroosma, Olaf; Paassen, M. M. van; Mulder, Bob C.

doi:10.2514/6.2005-6502

Cited by 54 publications

(32 citation statements)

References 3 publications

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“…It provides researchers with a powerful tool that can be adapted to various uses [16]: for example research into human (motion) perception [17], [18], [19], aircraft handling qualities [20], [21], fly-by-wire control algorithms and flight deck displays [22], [23], flight procedures [24], [25] and air traffic control [26]. The simulator's flexible software architecture and high-fidelity cueing environment allows the integration of the B747 model from Smaili et al [9].…”

Section: Test Facilities (Simona)mentioning

confidence: 99%

Fault Tolerant Sliding Mode Control Design with Piloted Simulator Evaluation

Alwi¹,

Edwards²,

Stroosma³

et al. 2008

Journal of Guidance, Control, and Dynamics

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This paper considers sliding mode allocation schemes for fault tolerant control. The schemes allow redistribution of the control signals to the remaining functioning actuators when a fault or failure occurs. The paper analyzes the schemes and determines conditions under which closed-loop stability is retained for a certain class of faults and failures. It is shown that faults and even certain total actuator failures can be handled directly without reconfiguring the controller. The results obtained from implementing the controllers on the SIMONA research flight simulator, configured to represent a B747 aircraft, show good performance in both nominal and failure scenarios even in wind and gust conditions.

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Section: Test Facilities (Simona)mentioning

confidence: 99%

Fault Tolerant Sliding Mode Control Design with Piloted Simulator Evaluation

Alwi¹,

Edwards²,

Stroosma³

et al. 2008

Journal of Guidance, Control, and Dynamics

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“…In their study they found a time constant for Equation (5) Heerspink et al, 2005), therefore it is reasonable to consider an effect of the cìegree of freedom on the time constant of the somatogravic illusion.…”

Section: Discussionmentioning

confidence: 95%

The time constant of the somatogravic illusion

Grácio

Winkel

Groen³

et al. 2012

Exp Brain Res

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Humans perceive tilt when experiencing a sustained acceleration.This tilt illusion is commonly referred to as the somatogravic illusion. Although the physiological basis of the illusion seems to be well understood, the dynamic behavior is still subject to discussion. In this study the dynamic behavior of the illusion was modeled and the time constant was measured experimentally. Subjects were exposed to pure centripetal accelerations in the lateral direction and were asked to indicate their tilt percept by means of a joystick. Variable radius centrifugation during constant angular rotation was used to generate three different motion profrles. Results showed that the time constant of the somatogravic illusion is in the order of two seconds contradicting the high time constant found in fixed radius centrifugation studies. The model fit was not improved when using an otolith model sensitive to high frequency accelerations. Apart from the fundamental importance, these results also have practical consequences for the simulation of sustained accelerations in motion simulators.

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“…Previous SLIP FALLS research revealed a negative power law relationship between the length of the short anterior translations and the subjects' Peak Acceleration Thresholds (PAT=38.90D-0.56) [9]. We studied here the effect of the external perturbation frequency on the Head AP gain.…”

Section: Discussionmentioning

confidence: 99%

Untitled

2016

IJBB

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A Sliding Linear Investigative Platform for Assessing Lower Limb Stability (SLIP-FALLS) was employed to study postural control biomechanical reaction to external perturbations in a short ≤16mm postural perturbation. Head acceleration were evaluated while blindfolded subjects stood on a platform that was given a short anterior perturbation presented in one of 2 sequential 4s intervals (2-Alternative-ForcedChoice) for a set of 30 trials. Anterior-Posterior head acceleration (Head Accl AP) were investigated among the movement and non-movement intervals for the healthy adults. A strong ringing signal was observed in Head Accl AP movement interval that was absent in non-movement interval. A positive power law trading relationship was found between HeadAccl AP gain and move length standing blindfolded subjects. This could explain the observed negative power law relationship between translation length and peak acceleration threshold in previous psychophysical detection threshold studies.

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Evaluation of Vestibular Thresholds for Motion Detection in the SIMONA Research Simulator

Cited by 54 publications

References 3 publications

Fault Tolerant Sliding Mode Control Design with Piloted Simulator Evaluation

Fault Tolerant Sliding Mode Control Design with Piloted Simulator Evaluation

The time constant of the somatogravic illusion

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