For the model of flywheel rotor in the thesis , the weight of aluminum hub is 13 . 5 kg , and the weight of composite rim is 14 . 5 kg . moreover , the multi - ring s flywheel rim was made by filament winding process 本文提出的飞轮转子模型，铝合金轮毂重13 . 5kg ，复合材料轮环重14 . 5kg ，采用多环套装缠绕工艺，分为内外两层轮环，分别采用t300和m40j碳纤复合材料。
The computation expressions of the stress for composite flywheel are derived . the affecting factors on the stress distribution for the flywheel rotors are analyzed and investigated . and the design method of structure parameters for the flywheel rotor is presented 推导了复合材料飞轮的应力计算公式，并对飞轮转子应力分布的影响因素进行了分析研究，提出了飞轮转子结构参数的设计方法。
Nowadays , the key problems of evalucated model of the composite flywheel rotor are that resulted from the lack of mechanical theoretic foundation , more costly material cost , complex manufactured process , and the shortage of reliability study and test and so on 目前国内外研制开发的复合材料飞轮转子，主要问题在于，理论研究的缺乏导致优化设计困难、材料成本过高，复合材料飞轮制造工艺较复杂，安全可靠性较难保证等。
Further more , a finite element analysis of flywheel rotor was made to increase the security of the flywheel ' s test , 9 modes frequency were taken out according to the rotating speed of the flywheel , the results can act as the theory base for the structure design and tests of the flywheel 为了增加飞轮实验的安全性，本文利用有限单元法对飞轮转子作了模态分析，抽取了飞轮工作转速范围内的9阶模态频率，可作为飞轮结构设计和飞轮实验的理论基础。
In this article , the following technology of the carbon fiber composite flywheel in the integrated energy - storage / attitude - control system are analyzed and the valuable achievements are achieved above the foundation of consulting a large quantity of literatures and investigation : 1 . different technology method for carbon fiber composite flywheel are designed , aimed at the character of carbon fiber composite material and manufacture 2analyzes the stress of carbon fiber composite flywheels made by different technology method , hoop - winding method , symmetric ortho layers pressing method , multi - layer winding method and interference joining method , under high rotate speed , builds their static model ; and simulates their technology and shape parameter ' s affecting their stress level with i - deas f . e . m 本文在查阅了大量国内外相关文献及调研的基础上，针对集成化储能/姿态控制飞轮系统中的碳纤维复合飞轮的以下相关技术进行了研究，并取得了有价值的成果： 1针对碳纤维复合材料的特点及加工方式，设计了周向缠绕成型法、对称正交铺层层压法、多层结构缠绕及过盈连接法等不同工艺方式的碳纤维复合飞轮转子； 2针对不同工艺方式的碳纤维复合飞轮转子，进行了高速旋转状态下的应力分析，建立了静力学解析模型，并结合i - deas有限元分析软件模拟仿真了不同工艺方式的碳纤维复合飞轮转子的相关几何参数及工艺参数对其应力水平的影响； 3
The study of flywheel battery concerns the intercross of many disciplines , such as mechanism , material , electronic engineering , heat engineering , computer , and so on . in this dissertation , two main key techniques , the high speed flywheel rotor and the magnetic bearing , are investigated deeply and systematically . the main contents of this dissertation are as following : in chapter 1 , the background , source , purpose and significance of the subject are introduced 其研究涉及到机械、材料、电工、热工、计算机等多学科的交叉，国内外目前大都在研究原型装置，对设计理论与方法尚未进行系统深入的研究，本论文则对飞轮电池储能涉及的两大关键技术? ?飞轮转子设计与磁浮轴承及其相关技术进行了系统的理论分析与仿真研究。
Analysis software . the analysis show : the gyroscope effect to the flywheel rotor ' s and the shaft ' s vibration character under high rotate speed should be considered . at this time , the system ' s normal frequency is the function of rotate speed ; the amplitude passing through the resonance field can be lowered obviously by improving the effective damping of the electro - magnetic bearing 建立了高速旋转状态下，采用磁轴承作支撑的飞轮转子和转轴的动力学模型，给出了有限元法在此问题中的具体应用，并利用i - deas有限元分析软件具体分析了飞轮系统的共振频率、系统振型，以及对偏心激励的响应，分析表明：对于高速旋转的飞轮转子和转轴，应考虑陀螺效应对其动力学特性的影响，此时系统的固有频率是转速的函数；通过提高磁轴承的等效阻尼可显著降低系统通过共振区域时的振幅。
By the analysis , it was found out that the key control factor determined the speed limit and storage energy was the poor transverse tension strength of the composites . therefore , if only fibers of high longitudinal tension strengths were used in the rim , high rotate speed and high energy storage density of flywheel rotor would not be achieved 经过理论推导及程序优化比较，发现，影响飞轮转子极限转速和储能量的主要控制因素，恰好是其复合材料轮环较为薄弱的横向拉伸强度，因此单纯地通过采用高纵向拉伸强度的高强碳纤材料来制造飞轮转子，并不能得到期望的高转速和储能密度。
In this paper , a new way of real - time damage detection method was proposed according to the high speed working situation of the composite flywheels for energy storage , and a suit of equipment was developed to test the composite samples with piezoelectric disc built - in , the response waves before and after the damage occurred were recorded to the computer . on the base of traditional spectrum analysis of signal recorded , the wavelet analysis was introduced and the program in matlab language was made . with the wavelet packet decomposition of the signal , the relations between the change of response signals and damage characters were gotten , a database for damage recognition was created 本文结合储能复合材料飞轮高速旋转的工作特点，提出了一种在线检测飞轮转子损伤的方法，自主设计一套实验装置对模拟各种损伤的的试样进行了测试，试样损伤前后的响应信号被采集后存入计算机中；在对采集信号进行传统的频谱分析的基础上，引入了先进的小波分析理论，利用matlab语言编写程序，对信号进行小波分解，得到了信号变化和损伤特征之间的关系，建立了一个识别飞轮损伤的数据库；小波包分解得到信号对比图和特征向量，可以有效判定材料内部有无损伤和损伤的程度，结合频谱分析等，可一定程度上判定损伤的类型，为储能飞轮的安全运转和智能化运作提供了决策依据。
Analysis software ; 3 . designs the optimum method of improving rotor ' s energy - storage ability , and optimizes the different shape energy - storage density of carbon fiber composite flywheels made by different technology method , and achieves their superior and inferior capability on the energy - storage . 4 针对不同几何外形及工艺方式的碳纤维复合飞轮转子，设计了提高其储能密度的优化设计方法，并进行了储能密度的优化设计，得出了不同几何外形及工艺方式的碳纤维复合飞轮转子在储能能力上的优劣； 4
