Control of a Duct Flow Network for Wind Display in a Virtual Environment

Kulkarni, Sandip D.; Chakravarthy, Shanthanu; Minor, Mark A.; Pardyjak, Eric R.; Hollerbach, John M.

doi:10.1109/tmech.2011.2157973

Cited by 5 publications

(3 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The feedback controller consists of two parts: an outer loop (the TPAWT controller), where the measured wind at the user position computes the desired vent inlet flow velocities (Fig. 8) similar to [7], and an inner loop (Vent Controller), where the inlet flow velocities of the left and right side are controlled by actuating the barn-door servo valves detailed in [11] (Fig. 9).…”

Section: Integration Of Control Methods For Wind Generationmentioning

confidence: 99%

“…designing a unique low turbulence air flow system (with specialized inlets and outlets [10] ) to overcome spatial constraints, 2. integrating and modifying algorithms to control wind velocity at the user based upon inlet flow velocities (similar to [7]), 3. designing throttle valves in the ducts based upon these inlet velocities (detailed in [11]), 4. testing display screens [8,12] and auditory levels [13] for safety, and 5. evaluating the effect of a user on the flow dynamics.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Full Body Steerable Wind Display for a Locomotion Interface

Kulkarni

Fisher

Lefler³

et al. 2015

IEEE Trans. Visual. Comput. Graphics

Self Cite

View full text Add to dashboard Cite

This paper presents the Treadport Active Wind Tunnel (TPAWT)-a full-body immersive virtual environment for the Treadport locomotion interface designed for generating wind on a user from any frontal direction at speeds up to 20 kph. The goal is to simulate the experience of realistic wind while walking in an outdoor virtual environment. A recirculating-type wind tunnel was created around the pre-existing Treadport installation by adding a large fan, ducting, and enclosure walls. Two sheets of air in a non-intrusive design flow along the side screens of the back-projection CAVE-like visual display, where they impinge and mix at the front screen to redirect towards the user in a full-body cross-section. By varying the flow conditions of the air sheets, the direction and speed of wind at the user are controlled. Design challenges to fit the wind tunnel in the pre-existing facility, and to manage turbulence to achieve stable and steerable flow, were overcome. The controller performance for wind speed and direction is demonstrated experimentally.

show abstract

Section: Integration Of Control Methods For Wind Generationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Full Body Steerable Wind Display for a Locomotion Interface

Kulkarni

Fisher

Lefler³

et al. 2015

IEEE Trans. Visual. Comput. Graphics

Self Cite

View full text Add to dashboard Cite

show abstract

“…Based on dissipation theory, an adaptive decentralised was proposed in [14] to ensure closed‐loop stability. In [15], a decentralised sliding‐mode control scheme was proposed to deal with the disturbances caused by the coupling between fluid flow and model uncertainty.…”

Section: Introductionmentioning

confidence: 99%