基于典型相關(guān)分析的操縱桿操縱疲勞分析及評價
本文關(guān)鍵詞: 人機系統(tǒng) 操縱疲勞 力學特征 肌電信號 典型相關(guān)分析 出處:《合肥工業(yè)大學》2014年碩士論文 論文類型:學位論文
【摘要】:目前,國內(nèi)外研究學者對于疲勞的研究多運用動力學、生物力學等知識,或研究儀表人機界面設計,駕駛座椅布置系統(tǒng),汽車振動舒適性測評與優(yōu)化等,建模方法多采用人的主觀評價、仿真建模等方法,評價操縱疲勞的指標或選擇操縱裝置的某些操縱特征(如振動加速度、踏板力及力變率、噪音等),或選擇操縱者心理感知等級來度量疲勞程度。 本論文針對人機系統(tǒng)操縱桿操縱過程操縱疲勞的量化與評價問題,以操縱桿操縱力為研究對象,從分析操縱力力學參數(shù)角度,與反映操縱疲勞的表面肌電信號特征兩方面來考慮,分析并確定動力學特征參數(shù)和表面肌電特征參數(shù),用以定量描述操縱疲勞;模擬實驗過程,通過采集相關(guān)數(shù)據(jù),研究操縱力各個力學特征與各個表面肌電信號特征間的影響規(guī)律,提取肌肉疲勞特征參數(shù),,構(gòu)建操縱疲勞評價模型。根據(jù)典型相關(guān)分析的研究思路,利用綜合變量對之間的相關(guān)關(guān)系來反映兩組指標之間的整體相關(guān)性,研究操縱力與肌電信號之間的關(guān)聯(lián)關(guān)系,找出影響肌電信號最大的關(guān)聯(lián)因素,在此基礎(chǔ)上構(gòu)建表面肌電信號表征操縱疲勞的函數(shù)模型,以揭示操縱力的力學特征對操縱疲勞的影響機理,從而實現(xiàn)對操縱過程中操縱疲勞及其變化規(guī)律的定量描述;最后,以操縱過程操縱疲勞度量體系為依據(jù),探究操縱裝置優(yōu)化技術(shù),為緩解操縱疲勞設計提供理論依據(jù)和技術(shù)支持。
[Abstract]:At present, domestic and foreign scholars mostly use the knowledge of dynamics, biomechanics and so on to study fatigue, or research the design of man-machine interface, driving seat layout system, vehicle vibration comfort evaluation and optimization, and so on. Human subjective evaluation, simulation modeling and other methods are used in modeling methods, such as evaluating the index of manipulation fatigue or selecting some manipulation characteristics (such as vibration acceleration, pedal force and force change rate, noise and so on). Or choose the operator's psychological perception level to measure the degree of fatigue. In this paper, aiming at the problem of quantification and evaluation of manipulating fatigue in man-machine system, the manipulating force of the joystick is taken as the research object, and the mechanical parameters of the manipulating force are analyzed. Considering the characteristics of surface electromyography (EMG) signals which reflect the manipulation fatigue, the dynamic characteristic parameters and the surface EMG characteristic parameters are analyzed and determined to describe the manipulation fatigue quantitatively. Simulation experiment process, through collecting relevant data, study the influence law between each mechanical characteristic of manipulation force and each surface EMG signal feature, extract the characteristic parameter of muscle fatigue. According to the research idea of canonical correlation analysis, using the correlation relationship between the two sets of variables to reflect the overall correlation between the two groups of indicators. The relationship between manipulation force and EMG signal is studied to find out the most important correlation factors of EMG signal. Based on this, a functional model of surface EMG signal to characterize manipulation fatigue is constructed. In order to reveal the mechanism of the influence of the mechanical characteristics of the manipulation force on the manipulation fatigue, the quantitative description of the manipulation fatigue and its variation law can be realized. Finally, based on the manipulation fatigue measurement system, the optimization technology of the manipulation device is explored to provide the theoretical basis and technical support for the design of the handling fatigue.
【學位授予單位】:合肥工業(yè)大學
【學位級別】:碩士
【學位授予年份】:2014
【分類號】:TB18;TN911.7
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