摘要在现代工业及国防中，各种复杂机械装置，各式各样的负载大量存在，要对它们进行精确控制，必须采用具有自适应性、智能性的先进控制算法，但是对于较复杂的控制算法进行现场在线测试验证是不可行的。鉴于这些因素，为了满足产品生产和科学研究的需求，应该采用负载模拟装置系统。电动负载模拟系统以其结构简单、体积小、成本低、控制性能好的特点成为负载模拟领域非常有前途的一个分支，并且它还特别适宜在实验室中使用。49809

本文的主要内容分为三个部分：

第一部分根据所给的信息和搜集来的资料，进行试验台的设计，考虑到实际的工作进行仿真的设备的特性，本方案提供了一个机械的，电动混合动力负载模拟系统，可以同时模拟惯性，摩擦力和惯性常数3种。

第二部分是根据任务所给的三种力矩的范围，对于惯性负载用在飞轮本体上增减质量块来实现，飞轮本体上设计有一系列位于同心圆上螺纹孔，同时额外提供一系列附加质量块，质量块可通过螺纹安装到飞轮本体上。飞轮本体的大小与质量、各螺纹孔的位置及质量块的质量都是经过准确计算的，其目的是实现由飞轮及这些质量块的组合后可覆盖设计要求的转动惯量变化范围；摩擦及常值负载加载方式采用磁粉制动器实现，通过改变制动器的制动电流，可实现制动力矩的调整。

第三部分通过ANSYS软件对飞轮本体所在轴和磁粉支架等地方进行有限元的分析，并且对轴跟轴承进行强度校核，轴的直径取d=250mm，轴承寿命为30000h，经校核，轴的直径符合要求，轴承的寿命达到50000多h，完全符合要求。

毕业论文关键词：负载模拟；惯性负载；摩擦负载；常值负载

Abstract In the modern industry and national defense ,all kinds of complex mechanical device ,the existence of a large number of every kind of load ,to be precise control of them ,must adopt adaptive、advanced intelligent control algorithm, but for more complex control algorithms for on-line testing is not feasible.Given these factors, designed to meet the needs of production and scientific research, the load simulator is such a system. Electric load simulation system with its simple structure, small size, low cost, and good control performance to become a very promising field of load simulation is a branch, and it is particularly suitable for use in the laboratory.

The main content of this paper is pided into three parts:

The first part based on the information given and the information collected for the test bench design, taking into account the actual work performed simulation device characteristics, the program provides a mechanical, electric hybrid load simulation system that can simultaneously simulate the inertia , friction and inertia constant of three kinds.

The second part is given the task of the three torque range, the inertia of the load change on the body with the flywheel mass to achieve, on the design of the flywheel body in a series of concentric threaded hole, and an additional number of additional mass block, the mass can be screwed into the flywheel body . The size and quality of the flywheel main body, the position of the screw holes and the mass is through accurate calculation of the mass, and its object is achieved by the flywheel and the mass of the combination of these can cover the design requirements of the moment of inertia variation range; friction and constant value of the magnetic particle brake load loading achieved by changing the brake braking current can be adjusted to achieve the braking torque. 

The third part through the body where the ANSYS software flywheel shaft, test bench tops, bevel gears and other local strength check to ensure the smooth test bench.

Keyword: keyword:Load simulation; Inertia loads; friction load; constant load