The haptic-based sensing technology (HST) has the potential to be a powerful tool in Human-Computer Interaction (HCI). When developing a new product, the trend is to compress product development cycles and reduce costs. Virtual modeling, sometimes referred as digital prototyping, is widely used in industry for simulating the visual appearance and functionalities. Unfortunately, conventional vir...

In this paper the effect of a force control law in the transparency of a five degree-of-freedom (dof) haptic mechanism is investigated. The mechanism, which is a part of a training medical simulator for urological operations, consists of a two-dof, five bar linkage and a three-dof spherical joint. The force control algorithm is described and discussed. The open and closed loop schemes are compa...

Most commonly used impedance-type haptic interfaces employ open-loop force control under the assumption of pseudostatic interactions. Advanced force control in such interfaces can increase simulation fidelity through improvement of the transparency of the device, and can further improve robustness. However, closed loop force-feedback is limited both due to the bandwidth limitations of force sen...

Current computational simulation are capable of producing enromous amounts of data. Complete understanding of their features presents a challenge even if very sophisticated visualization techniques are deployed. Computational analysis of conformational behaviour of biologically active compounds represents such simulation. We investigate methods how haptic rendering may contribute to better and ...

A low-cost approach towards non-haptic medical training By: Julian Thomas Ewers-Peters Supervisor: Prof. Marie Redmond As Virtual Reality Training Systems (VRTS) become more advanced, they are increasingly being regarded as valuable facilities for the acquisition of dextrous clinical skills among medical doctors and anesthetists. This work explores the possibilities that are provided by introdu...

Conventional approach to the virtual prototyping of the steering system provides analysis and simulation tools which generate numerical results in the form of plots, charts tables or animation. The interpretation of the numerical results is not done naturally, no clear conclusion can be drawn considering the steering comfort and the task needs a skillful engineer. This paper proposes a novel ap...

couples the human operator to a source of mechanical power—either electromagnetic, electrohydraulic, or electropneumatic actuators. The computation engine governs the behavior of the actuators and linkage as a function of kinematic and force measurements from interface transducers, according to algorithms and equations that describe the VE models to be simulated. A force reflecting interface th...

Weight is perceived through the combination of multiple sensory systems, and many factors can influence perception heaviness, including touch, visual, force senses. There have been significant advancements in development haptic interfaces throughout years. However, challenges limit progression to enable humans sense weight virtual reality (VR). This article presents an overview that how phenome...

The current study concerns the Assembly/Disassembly (A/D) process. Despite the latest improvements, the creation of a fully realistic VE is still challenging because of the complexity of the physical processes involved and the current limitations of the available VR technology. In this context, the main purpose of this research is to improve the A/D process simulation by proposing a new method ...