脊髓致伤力系统的研制

发布时间：2018-03-07 03:08

本文选题：脊髓打击器　切入点：打击力测量　出处：《北方工业大学》2015年硕士论文　论文类型：学位论文

【摘要】：脊髓是脊椎类动物神经中枢的一部分,用来传导、反射,四肢、体壁和内脏的感觉冲动,同时维持人的运动功能,调节人的生理反应。在现实生活当中,撞击和挤压等多种原因都有可能导致脊髓的横惯性损害,这种损害能够造成损伤平面以下脊髓神经功能障碍,继而引发严重的肢体残疾。随着这种脊髓损伤发病率的逐年上升,对脊髓损伤的药理和治疗效果的研究越来越重视。制备大量的、标准的动物脊髓损伤模型是进行脊髓损伤深入研究的前提。本文在步进电机控制技术以及传感器检测技术的基础上,采用PLC编程、理论计算和MATLAB拟合的方法,设计了一套脊髓打击装置,实现了打击平台的精准定位、位置信息的实时检测,打击力的测量以及数据的采集和分析。主要研究内容如下：首先,对三维可移动打击平台的精准定位进行了研究。通过步进电机细分和绝对编码器检测的方法,使步进电机的理论定位精度达到0.0078125mm、定位误差降至0.005mm；实现了平台回归参考点的功能,并通过触摸屏实时显示打击平台的状态信息。其次,对打击力的测量方法进行了研究,通过对打击过程的物理分析得到打击力的理论范围,并根据这一范围选择适合本系统的测力传感器,设计出集打击与打击力测量于一体的打击锤,实现了打击力的测量。再次,针对打击力与打击时间的测量设计实验。进行不同打击高度的实验,打击波形信息的获取和分析。最后,提取多组信号上的数据点,通过MATLAB的函数算法得到不同高度下最具有代表性的打击力随时间变化的关系曲线和等效打击力,可以根据这一结论,来制作不同损伤程度的脊髓损伤模型。研究工作对脊髓打击装置的设计、打击力的标定以及脊髓损伤模型的分类提供参考。
[Abstract]:The spinal cord is a part of the nerve center of a vertebrate that conducts, reflexes, limbs, body walls and visceral impulses, while maintaining human motor function and regulating human physiological responses. The damage of transverse inertia of spinal cord can be caused by impingement and compression, which can cause spinal cord neurological dysfunction below the level of injury, and then lead to severe limb disability. As the incidence of this kind of spinal cord injury increases year by year, More and more attention has been paid to the pharmacological and therapeutic effects of spinal cord injury (sci). The preparation of a large number of standard animal spinal cord injury models is a prerequisite for further research on spinal cord injury. On the basis of stepping motor control technology and sensor detection technology, a set of spinal cord strike device is designed by using PLC programming, theoretical calculation and MATLAB fitting method, and the precise positioning of the strike platform is realized. Position information real-time detection, impact force measurement and data acquisition and analysis. The main research contents are as follows:. Firstly, the precise positioning of 3D movable strike platform is studied. The method of step motor subdivision and absolute encoder detection is used. The theoretical positioning accuracy of stepping motor is 0.0078125mm, the positioning error is reduced to 0.005mm, the function of platform regression reference point is realized, and the state information of attacking platform is displayed in real time through touch screen. Secondly, the measurement method of the impact force is studied, and the theoretical range of the impact force is obtained by physical analysis of the hitting process, and the force sensor suitable for the system is selected according to this range. A hammer is designed to measure the impact force. Thirdly, the experiment is designed to measure the strike force and time. The experiment of different strike height is carried out to obtain and analyze the information of the strike wave. Finally, the data points are extracted from multiple sets of signals, and the most representative relation curve and equivalent impact force are obtained under different height by MATLAB's function algorithm, according to this conclusion. The research provides a reference for the design of the spinal cord strike device, the calibration of the impact force and the classification of the spinal cord injury model.
【学位授予单位】：北方工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：R651.2

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