Before the second cash , the safety mechanism benefit occupant to safe condition . the safety mechanism is very cheap and it can be bought by most consumer . based on the multi - body dynamics roberson - wittenburg formula , a mathematical modle of the " occupant - seat - safety mechanism " system was built , and its kinematic equation was given . the corresponding computer programme was based on the equation , kinematic equation can provide advice for safety mechanism and serve for computer imotion . r / w and kane set up their own formula . they both can prove safety mechanism is benfit to occupant 为了研究人体的伤害机理,选择适当的人体模型作为研究对象;人体采用二维多刚体铰接模型,将人体简化为骨盆、躯干、头部、大腿、小腿、脚部、上臂和前臂八个刚体,而相应的七个关节腰、颈、髋、膝、踝、肩和肘,均简化为带有扭力弹簧和转动阻尼的铰链。
Then , based on object oriented programming , author gives a geodetic inversion computer programme using modern nonlinear optimization algorithms . modern nonlinear optimization algorithms have many outstanding advantages : global search , nonlinear calculate and parallel calculate etc , so they will be paid more attention on geodetic inversion 通过分析可以看出,现代非线性优化算法本身的全局搜索,非线性计算和可并行计算等显著的优点决定了它在大地测量反演中必定会越来越受到重视。
Saturation vapour pressure of internal combustion engine under actual operation conditions is expressed as the multinomial by using least square method , which facilitates the calculation of rectifying coefficient of engine output and fuel consumption as well as the fabrication of computer programme for such calculations 摘要介绍了用最小二乘法拟合方法,将内燃机现场环境状况下饱和蒸汽压表示为多项式形式,为计算功率和燃油消耗率校正系数,并为此而编制计算机程序提供方便。