Two kinds of aeroengine control systems are established to illustrate the validity of the control system simulation platform . in the last part , an adaptive control algorithm library of the turbofan engine is built . simulation results of the control algorithms show that the controllers have excellent performance in the whole envelope 此外,本文针对所建立的某大型涡扇发动机数学模型设计了一个自适应控制算法库,将已有的多种控制算法研究成果融入其中,对各种算法进行了仿真测试,取得了良好的控制效果。
This thesis is based on the budget information disposal system of tianjin seasun corporation . we adopted the technology of object - oriented reuse to realize the production and use of budget information , discussed the development of approving subsystem , researched forecast supporting algorithms as component and realized forecast supporting algorithms library adopting com , which is a good base for enterprise to make decision 本文以天津新巨升电子公司为需求背景，采用面向对象复用技术分析实现了预算信息处理的两个阶段：预算信息产生和预算信息应用，详细探讨了预算信息审批系统的研制过程，对预测信息的产生做了构件化研究，采用com技术完成了预测支持算法库，为企业的决策支持打下了良好的基础。
Firstly , we generalize and analyze the advantages and present research of elliptic curve cryptography ; secondly , we study the basic theory of the ecc ; thirdly , we illustrate the safety of the ecc and discuss the elliptic curve key agreement scheme , elliptic curve encryption scheme and elliptic curve digital signature algorithm ; fourthly , we study fast algorithms of the multiplication and inversion multiplication of the element of in the underlying finite field f2m whose characteristic is two represented by the two basis of optimal normal basis and polynomial basis . we make improvements to the fast algorithm of the polynomial basis multiplication by hankerson and base on the experiments , we describe the properties and compare the advantages of the multiplication and inversion multiplication of the elements in f2m field under optimal normal bases and polynomial basis . results concluding from the study car be used as references in the realization of the elliptic curve cryptosystem ; fifthly , we overview the current fast algorithm of point multiplication , improve the fix base point comb algorithm , advance the speed of the whole system and remark the advantages and disadvantages of the popular algorithms based upon the experimental datas ; sixthly we realize the algorithm library of elliptic curve cryptography based on the f2m . only change slightly in our algorithm library can we realize the ecdh , eces , ecdsa based onf2m of anysize ; seventhly , we realize the ecc on two secure elliptic curves , including ecdh , eces , ecdsa 本文首先介绍并分析了椭圆曲线密码体制的优点及研究现状；其次研究了椭圆曲线密码体制的基本理论；第三，分析了椭圆曲线密码的安全性并介绍了密钥共享，加密，数字签名等椭圆曲线密码体制；第四，深入研究了特征为2的有限域f _ 2m中的元素在多项式基和最优正规基表示下的乘法运算和乘法逆运算的快速算法，并对hankerson等人提出的多项式基下的乘法运算的快速算法作了改进，而且在实验的基础上不仅分析研究了f _ 2m域中元素在多项式基和最优正规基表示下的乘法和乘法逆运算的性能，还对这两种基表示下的f _ 2m域中元素运算效率的优劣作了比较和研究，所得的结论可供在实现椭圆曲线密码体制时参考；第五，研究了目前流行的计算椭圆曲线标量乘法的快速算法，同时改进了固定基点梳形法，提高了整个系统的速度，并在实验的基础上分析研究了流行算法的优劣；第六，实现了基于f _ 2m的椭圆曲线密码体制的算法库，在我们的算法库中只需稍微改变便能实现基于任意尺寸的f _ 2m上的ecdh ， eces ， ecdsa等椭圆曲线密码体制；第七，实现了两条安全椭圆曲线上的椭圆曲线密码体制，包括ecdh ， eces ， ecdsa 。
