Haptic technology

About: Haptic technology is a research topic. Over the lifetime, 18818 publications have been published within this topic receiving 306713 citations. The topic is also known as: haptics & haptic media.

Surface material recognition through haptic exploration using an intelligent contact sensing finger

Abstract: Object surface properties are among the most important information which a robot requires in order to effectively interact with an unknown environment. This paper presents a novel haptic exploration strategy for recognizing the physical properties of unknown object surfaces using an intelligent finger. This developed intelligent finger is capable of identifying the contact location, normal and tangential force, and the vibrations generated from the contact in real time. In the proposed strategy, this finger gently slides along the surface with a short stroke while increasing and decreasing the sliding velocity. By applying a dynamic friction model to describe this contact, rich and accurate surface physical properties can be identified within this stroke. This allows different surface materials to be easily distinguished even if when they have very similar texture. Several supervised learning algorithms have been applied and compared for surface recognition based on the obtained surface properties. It has been found that the naive Bayes classifier is superior to radial basis function network and k-NN method, achieving an overall classification accuracy of 88.5% for distinguishing twelve different surface materials.

Systems and Methods for Parameter Modification of Haptic Effects

Abstract: Systems and methods for parameter modification of one or more haptic effects are disclosed. In one embodiment an electronic device determines a haptic effect. The electronic device can receive an input signal indicating an environmental condition. The input signal may be generated by an environmental sensor. The environmental condition may be a temperature, vibration, noise, movement, trait of a user such as a user's weight, gender, age, height, another suitable trait of a user, another suitable environmental condition, or a combination thereof. The electronic device may modify the haptic effect based at least in part on the input signal. The electronic device can generate a haptic output signal based at least in part on the modified haptic effect. The haptic output signal may be configured to cause a haptic output device to output the modified haptic effect. The electronic device may output the haptic output signal.

Stochastic models for haptic texture

Abstract: Recent research in haptic systems has begun to focus on the generation of textures to enhance haptic simulations. Synthetic texture generation can be achieved through the use of stochastic modeling techniques to produce random and pseudo-random texture patterns. These models are based on techniques used in computer graphics texture generation and textured image analysis and modeling. The goal for this project is to synthesize haptic textures that are perceptually distinct. Two new rendering methods for haptic texturing are presented for implementation of stochastic based texture models using a 3 DOF point interaction haptic interface. The synthesized textures can be used in a myriad of applications, including haptic data visualization for blind individuals and overall enhancement of haptic simulations.

An implicit-based haptic rendering technique

Abstract: We present a novel haptic rendering technique. Building on previous work, we propose a haptic model based on a volumetric description of the geometry of an object. Unlike previous volumetric approaches, we also find a virtual contact point on the surface in order to derive a penalty force that is consistent with the real geometry of the object, without introducing force discontinuity. We also demonstrate that other surface properties such as friction and texture can be added elegantly. The resulting technique is fast (a constant 1000 Hz refresh rate) and can handle large geometry models on low-end computers.

Haptic augmented and virtual reality system for simulation of surgical procedures

Abstract: The present technology relates to systems, methods and devices for haptically-enabled virtual reality simulation of cerebral aneurysm clipping, wherein a user uses two physical stations during the simulation. The first station is a haptic and augmented reality station, and the second station is a haptic and virtual reality station.