Topic
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.
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Patent•
29 Mar 1995
TL;DR: This paper describes the development of a virtual surgery system, called VQSplat, which is capable of display multiple volumetric models, manipulating and editing (cutting) them, using a hierarchical multi-resolution point rendering system derived from an existing point renders system, QSplat.
Abstract: A virtual surgery system or virtual testing system provides a simulation or test based on image data. A simulator combined with a real exam requires simulation tasks by a test taker. Additionally, a surgical procedure may be simulated using image data of a patient in devices simulating the physical instruments a surgeon uses in performing the actual procedure, for example. The user input device, such as a mouse, three dimensional mouse, joystick, seven dimensional joystick, full size simulator, etc., can be used in a virtual simulation to move through the image data while the user looks at the data and interaction of the input device with the image data on a display screen. Force feedback can be provided based on physical constraint models (of the anatomy, for example), or based on edge and collision detection between the virtual scope or virtual tool used by the operator and walls or edges of the image data in the image space. The virtual simulator may be used as a teaching, training, testing, demonstration, or remote telesurgery device, for example.
257 citations
TL;DR: The current results may guide computational models of human haptic object classification and the development of perceptual systems for robots equipped with sensate dextrous hands, capable of intelligent exploration, recognition, and manipulation of concrete objects.
257 citations
12 May 1992
TL;DR: A teleoperated hand system developed to study the role of tactile and fine-force sensing in telemanipulation is described, which has been used to demonstrate that a tactile display can convey frictional information sensed at the slave manipulator.
Abstract: The author describes a teleoperated hand system developed to study the role of tactile and fine-force sensing in telemanipulation. Both master and slave manipulators are two-fingered hands designed for precision tasks that humans typically execute with a pinch grasp. A direct drive parallel linkage configuration and brushless DC servomotors permit smooth, accurate control of contact forces and small motions, which is essential for effective tactile sensing and display. Initial experiments demonstrated that an operator can perform precision tasks using this system, and that the ability to convey small force levels to the operator required careful attention to the coupling between the operator's finger tips and the master manipulator. The system has been used to demonstrate that a tactile display can convey frictional information sensed at the slave manipulator. >
255 citations
Patent•
15 May 2001TL;DR: In this paper, an input control device with force sensors is configured to sense hand movements of a surgeon performing a robot-assisted microsurgery, which actuate a mechanically decoupled robot manipulator.
Abstract: An input control device with force sensors is configured to sense hand movements of a surgeon performing a robot-assisted microsurgery. The sensed hand movements actuate a mechanically decoupled robot manipulator. A microsurgical manipulator, attached to the robot manipulator, is activated to move small objects and perform microsurgical tasks. A force-feedback element coupled to the robot manipulator and the input control device provides the input control device with an amplified sense of touch in the microsurgical manipulator.
253 citations
19 Nov 2014
TL;DR: This paper outlines the algorithm for controlling the volumetric distribution of the acoustic radiation force field in the form of a three-dimensional shape, and demonstrates how this field is created and how users interact with it.
Abstract: We present a method for creating three-dimensional haptic shapes in mid-air using focused ultrasound This approach applies the principles of acoustic radiation force, whereby the non-linear effects of sound produce forces on the skin which are strong enough to generate tactile sensations This mid-air haptic feedback eliminates the need for any attachment of actuators or contact with physical devices The user perceives a discernible haptic shape when the corresponding acoustic interference pattern is generated above a precisely controlled two-dimensional phased array of ultrasound transducers In this paper, we outline our algorithm for controlling the volumetric distribution of the acoustic radiation force field in the form of a three-dimensional shape We demonstrate how we create this acoustic radiation force field and how we interact with it We then describe our implementation of the system and provide evidence from both visual and technical evaluations of its ability to render different shapes We conclude with a subjective user evaluation to examine users' performance for different shapes
251 citations