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We describe a wearable haptic feedback device that imparts rotational skin stretch to provide feedback regarding movement of a virtual object. Applications for this device include feedback of motion for physical therapy or rehabilitation exercises or proprioceptive feedback for amputees. The device uses a small piezoelectric motor for a combination of low weight, moderate torques and rotation without...
Recent findings have shown that humans can adapt their internal control model to account for the changing dynamics of systems they manipulate. In this paper, we explore the effects of magnitude and phase cues on human motor adaptation. In our experiments, participants excite virtual second-order systems at resonance via a two-degree of freedom haptic interface, with visual and visual plus haptic feedback...
In this paper we introduce the use of force feedback in conjunction with myoelectric control to establish an improved interface for a powered prosthetic limb. The force feedback is delivered through a single-axis exoskeleton worn about the elbow, while the EMG signal is derived from the biceps muscle. This combination is intended to produce a sense of effort in the biceps that is associated with the...
Within the HapCath - haptic catheter - project an assistive system for interventional catheterizations has been developed. Conventional navigation during catheterization is done by direct manipulation of a handle at a guide wire's proximal end. With the aid of X-ray imaging the corresponding movement of the distal tip within the patient can be monitored. Depending on the practical experience of the...
Virtual environments (VEs) with haptic feedback not only provide a safe and versatile practice medium for many manual control tasks, but also promise to improve the efficacy of manual skill training with the addition of haptic guidance. However, haptic guidance schemes such as shared control may be detrimental since such schemes actively interfere with the coupled system dynamics, thereby causing...
In this work, we designed a haptic stylus interface interacting with a touch screen. The stylus has functions of providing vibration, impact, and sound and it is a stand-alone system including its own battery and wireless communication module. We present a new interaction scheme on the Windows graphical user interface based on haptic feedback events for clicking, drag & drop, moving, scrolling,...
We measure the performance improvement that force feedback can provide in a virtual environment, through three experiments with, and without the assistance of haptic guidance. Performance measurements were undertaken with haptic, visual and auditory feedback alternatives. The first task investigated the use of haptic guidance mimicking reality, in the form of a simulated touchable surface of an object...
In this work we present PhyNeSS - a novel physics-driven neural networks-based surgical simulation system which, for the first time, combines the complexity and accuracy of physics-based non-linear soft tissue models and commercial finite element codes with the high speed of execution of machine learned neural networks. While soft tissue is inherently nonlinear, physics-based simulation of nonlinear...
This paper investigates a human-centered approach for the exploration of large data sets resulting from CFD (computational fluid dynamics) simulations. In a VR (virtual reality) immersive environment we propose to couple haptic feedbacks with visual rendering. The proposed solution aims at identifying critical points of an unsteady fluid flow without resorting to any topology analysis such as eigen...
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