This article describes a haptic rendering algorithm for arbitrary polygonal models using a six degree-offreedom haptic interface. The algorithm supports activities such as virtual prototyping of complex polygonal models and adding haptic interaction to virtual environments. The underlying collision system computes local extrema in distance between the model controlled by the haptic device and t...

The control of a passive dissipative haptic interface using electromagnetic dry friction clutches as actuators is considered. The performance of the device is currently limited by actuator performance. A dynamic simulation of the system indicates that actuator torque may be better controlled with torque feedback, resulting in improved path-following performance of the haptic interface. Experime...

AUGMENTED HAPTIC INTERFACE FOR FLOW VISUALIZATION

We define haptic icons, or “hapticons”, as brief programmed forces applied to a user through a haptic interface, with the role of communicating a simple idea in manner similar to visual or auditory icons. In this paper we present the design and implementation of an innovative software tool and graphical interface for the creation and editing of hapticons. The tool’s features include various met...

We perceive the real world through many senses. Most Virtual Reality (VR) display systems, however, only present the illusion to our visual and sometimes audio senses. Walk-in display systems, such as a CAVE, allow users to see their own bodies as they interact with virtual objects. Collaborative virtual environments CVE allow many users to share the same virtual experience including the manipu...

One of the essential requirements in order to have a realistic surgical simulator is real-time interaction by means of a haptic interface is. In fact, reproducing haptic sensations increases the realism of the simulation. However, the interaction need to be performed in real-time, since a delay between the user action and the system reaction reduces the user immersion. In this paper, we present...

Innovative developments of information and digital technologies open a new paradigm of lifestyle. Cyber space created by a computer is being developed as a complementary concept to the real world and its practical usage increases drastically. The cyber space technology enlarges the area of human-real world interaction to human-cyber-real world interaction. Tangible interface can be understood a...

We present a novel multi-modal haptic interface for sketching and exploring the structure and properties of mathematical knots. Our interface derives from the familiar pencil-and-paper process of drawing 2D knot diagrams to facilitate the creation and exploration of mathematical knots; however, with a touch-based interface, users can also leverage their physical intuition by seeing, touching, a...

The Stereoscopic Haptic Acoustic Real-Time Computer (SHARC) is a multi-sensory computer system which integrates technologies for autostereoscopic display, acoustic sensing and rendering, and haptic interfaces into the same computing environment. This paper describes the system organization and the interface between diierent sensory components. This paper also discusses our ndings from developin...

In this paper, w ediscuss displaying a virtual object with coupling impedance by a haptic interface device with long sampling period. For such system to be stable, coupling impedance has to be set low. But it means that the operator feels soft surface of the virtual object and it is not suitable for displaying a virtual object with hard surface. This is because the system is a discrete time sys...