ABAQUS三轴振动传感器设计
摘要三轴振动传感器（以下也称为三维振动传感器、三维加速度传感器）是一种能够同时测量空间三个方向加速度的传感器，如今大都采用的原理有压电式、压阻式和电容式，并且多数采用一体化设计。但由于采用单独的弹性体设计，导致不同方向的加速度会彼此影响，而工程上采用的解耦方法也存在各种不足，所以对于多维加速度传感器的设计还需要根据实际情况选取合适的设计方法。本毕设课题灵感来源于火箭弹发射过程中特种车辆上的加速度测量需求。在综合考虑各种因素的前提下，设计出一种使用应变式原理、三轴独立的三维加速度传感器。因为所测量的特种车辆尺寸远远大于传感器，在满足测试精度等基本要求的前提下，为了缩短设计周期，简化传感器设计过程，现拟采用简单的合成式方法设计三轴振动传感器。假设该三轴振动传感器的三个轴向分别定义为空间中两两垂直的X、Y、Z，则只要在三个轴向上各安装一个加速度测试元件即组成了三轴振动传感器。其每个测试元件的弹性体为一个改进的等强度悬臂梁，加速度信息利用线应变进行测量。悬臂梁将使用ABAQUS有限元分析软件进行分析，优化应变片的粘贴位置，并分析载荷与应变是否呈线性关系。整个传感器可以通过一般的机加工技术制成，工艺要求低，制造成本低。是一种新式传感器。78437
毕业论文关键词 三维加速度传感器 有限元 等强度悬臂梁 应变式
毕业设计说明书外文摘要
Title Three dimensional acceleration sensor
Abstract Triaxial vibration sensor (hereinafter referred to as three-dimensional vibration sensor, three-dimensional acceleration sensor) is a can simultaneously measure space three direction acceleration sensor。 It now mostly use the principle of a piezoelectric type, pressure resistance and capacitance, and most of the integration design。 But due to the use of single elastic body design, resulting in different direction of the acceleration will influence each other, and decoupling methods used there are all kinds of problems。 Therefore, the design of multidimensional accelerometer also need to select the appropriate design method according to the actual situation。 The project was inspired by the acceleration measurement requirements of special vehicle in the process of rocket launching。 On the premise of considering all kinds of factors, the design of a three-dimensional acceleration sensor is designed using the principle of strain and the independence of the three axes。 I plan to take combination method because the measurement of special vehicle size much larger than the sensor and it also meet the requirement of premise mostly。 What more ,it also can shorten the design cycle, simplify the design of the sensor。 It is assumed that the three axes of the three axis vibration sensors are defined as X, Y and Z in the space which perpendicular each other。 So long as each of the three axes is installed with an acceleration measuring element, the three axis vibration sensor is formed。 The elastic body of each test element is an improved equal strength cantilever beam, and the acceleration information is measured by the line strain。 ABAQUS finite element analysis software is used to analyze and optimize the bonding position of the strain gauge, and the linear relationship between the load and the strain is analyzed。 The whole sensor can be made by the general machining technology。 The technology requirement and the manufacturing cost is low。 It is a new type of sensor。
Keywords Three dimensional acceleration sensor; Finite element; Equal strength cantilever beam; Strain type
目 次
1 引言（或绪论） 1