静电力触觉再现效果测量建模与评价

发布时间：2018-04-28 05:01

本文选题：静电力 + 触觉再现　；参考：《吉林大学》2017年硕士论文

【摘要】：触觉再现技术是人机交互领域研究的热点,可广泛运用于互联网、远程医疗、移动购物、教育教学等行业。融合触觉再现技术的交互方式能够提高人机交互的质量和效率,给人更加真实的沉浸感,打开人与虚拟世界沟通的新通道。基于静电力的触觉再现技术是实现裸指触觉再现的主要方式之一,用户利用裸指触摸具有触觉再现功能的智能手机、平板电脑等终端交互界面,可真实自然地感知虚拟物体的形状、轮廓和纹理等物理属性,实现丰富而逼真的触觉再现。决定静电力触觉再现技术应用的关键因素是“人”的触觉感知,人体触感的形成机理十分复杂,目前对触觉效果的评价方法主要依赖于对人体主观感觉的评价,缺乏客观评测方法和可表征触觉再现效果的评测数据,尚未形成定量化、可标准化的评价体系。本文针对静电力触觉再现效果的评价问题,从定量和定性两方面提出评价方法并进行评测,为提高触觉再现技术的通用性,制定行业标准,拓展触觉交互应用提供参考。本文的主要研究内容如下:(1)从手指与触觉面板间的电荷变化、触觉力产生机制等方面深入分析了静电力触觉再现机理,并结合手指皮肤的电特性建立手指-触觉面板的系统等效电路模型,研究静电力触觉再现效果的静电力表达方法。(2)针对静电力触觉再现效果的客观评测,制定指尖静电力的实验测量方法,设计并搭建静电力测量装置,对指尖静电力进行测量,结合对系统等效电路模型的仿真,获取可准确描述静电力触觉再现真实感的评测数据,挖掘指尖静电力波形、频率、幅度与驱动信号波形、频率、幅度之间的映射模型。(3)制定基于精神物理学的静电力触觉再现效果的主观评价方法,以人的主观感知为核心,测试在正弦波、方波、锯齿波和三角波四种波形驱动下,人体手指的幅度感知阈值、频率分辨阈值和幅度分辨阈值,利用ANOVA分析法,分析性别对各阈值的影响,并对静电力触觉的硬度、粘度、粗糙度和舒适度进行评测,结合客观静电力测量数据,建立静电力与触觉之间的映射机理模型。(4)制定基于任务绩效的静电力触觉再现效果的主观评价方法,引入静电的人机交互操作法则-Steering Law,实验者通过完成不同难度的转向任务,探究融合静电力触觉再现技术的交互方式对触摸屏裸指交互的效率和准确性的影响。本文的主要创新性工作如下:(1)改进了静电力触觉再现系统的等效电路模型,提出了指尖静电力的间接测量方法,搭建了静电力测量平台,解决了静电力的测量问题。(2)针对静电力触觉再现效果的客观评测,建立了驱动信号波形、频率和幅度参数与静电力之间的映射模型。(3)针对静电力触觉再现效果的主观评价,分别制定了基于精神物理学和基于任务绩效的评价方法,利用精神物理学方法,得出了人体的触觉感知门限,运用任务绩效方法,验证了融合静电力触觉再现技术的交互方式能够提高触摸屏交互的交互效率和交互准确性。
[Abstract]:Tactile reproduction technology is a hot topic in the field of human-computer interaction. It can be widely used in the fields of Internet, telemedicine, mobile shopping, education and teaching. The interaction of tactile reproduction technology can improve the quality and efficiency of human-computer interaction, give people more real immersion and open a new channel for communication between people and the virtual world. The tactile reproduction technology of force is one of the main ways to realize the nude finger tactile reproduction. The user can make use of the interactive interface of the smart phone with the tactile reproduction function of the bare finger touch, the tablet computer and other terminal interface, and can realistically and naturally perceive the physical properties of the shape, contour and texture of the virtual object, and realize the rich and realistic haptic reproduction. The key factor of the application of tactile reproduction technology is human tactile perception, and the formation mechanism of human touch is very complex. At present, the evaluation method of tactile effect mainly depends on the evaluation of the subjective feeling of the human body, lack of objective evaluation method and the evaluation data that can represent the effect of tactile reproduction. It has not yet formed quantified and standardized. In this paper, aiming at the evaluation of the effect of the tactile reproduction of static electric power, the evaluation method and evaluation are put forward from two aspects of quantitative and qualitative. It provides reference for improving the universality of tactile reproduction technology, making industry standards and expanding tactile interactive application. The main contents of this paper are as follows: (1) from the charge between the finger and the touch panel The mechanism of the tactile reproduction of static electric power is deeply analyzed, and the system equivalent circuit model of finger tactile panel is established by combining the electrical characteristics of the finger skin, and the static electric expression method of the tactile reproduction effect of static electric power is studied. (2) aiming at the objective evaluation of the effect of the static electric touch reproduction, the fingertip static electric power is formulated. The static electric power measurement device is designed and set up to measure the static electric power of the fingertip, and the simulation of the equivalent circuit model of the system is used to obtain the evaluation data that can accurately describe the realistic sense of the tactile power of static electric power, and the mapping model between the waveform of the fingertip static electric power, the frequency, the amplitude of the driving signal, the frequency and the amplitude. 3) make a subjective evaluation method based on the tactile reappearance effect of static electricity based on psychophysics, and take the subjective perception of human as the core, and test the threshold of amplitude perception, frequency resolution threshold and amplitude resolution threshold of human finger under the four waveforms of sine wave, square wave, sawtooth wave and triangle wave, and analyze the threshold of sex to each threshold by ANOVA analysis. The influence of the value, the hardness, viscosity, roughness and comfort of the static electric touch is evaluated, and the mapping mechanism model between the static electric power and the tactile is established in combination with the objective static electricity measurement data. (4) the subjective evaluation method of the tactile reappearance effect of static electric power based on the task performance is set up, and the ergonomics rule of the static electricity is introduced to -Steering Law, the experimenter explores the influence of the interactive mode of the tactile reappearance technology of the fusion of static electricity on the efficiency and accuracy of the touch screen interaction. The main innovative work of this paper is as follows: (1) the equivalent circuit model of the static electric tactile reproduction system is improved, and the indirect measurement of the fingertip static electric power is proposed. Method, a static electric measurement platform is set up to solve the problem of static electricity measurement. (2) in view of the objective evaluation of the effect of the tactile reproduction of static electric power, a mapping model between the driving signal waveform, frequency and amplitude parameters and static electricity is established. (3) based on the subjective evaluation of the effect of the tactile reproduction of static electric power, a psychophysics based on the psychophysics is formulated respectively. Based on the evaluation method of task performance, using the method of psychophysics, the tactile perception threshold of the human body is obtained. Using the task performance method, it is proved that the interactive mode of the tactile reproduction technology of the fusion static electric power can improve the interaction efficiency and the interaction accuracy of the touch screen interaction.

【学位授予单位】：吉林大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TP11

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