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 凸轮曲线规律
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 THE ALALYSIS OF MOTION REGULARITIES OF THE DISK-TYPE CAMS APPROXIMATED BY SOME CIRCULAR SEGMENTS (1) 凸轮轮廓曲线圆弧拟合的运动规律分析 短句来源 Take Characteristic Values as Optimization Objectto Construct Compound Cam Moving Curve 复合型凸轮运动曲线 短句来源 AN OPTIMUM DESIGN OF CAM CURVE 凸轮曲线优化设计 短句来源 curve 曲线 短句来源 The curve changing laws are achieved. 得到了它们的曲线变化规律。 短句来源

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 Working principle of a new type aircsaftarresting system is described. The mathematic model of the system is given, by which it is made clear that the system is a complex nonlinear autonomy system of secondorder and it moves freely after initial driving.The existence and the uniqueness of the solution of the differential equation, and that the system is asymptotically stable in a big scope are proved. Control and motion characteristics of the system are analyzed, and the control function of the needle valve... Working principle of a new type aircsaftarresting system is described. The mathematic model of the system is given, by which it is made clear that the system is a complex nonlinear autonomy system of secondorder and it moves freely after initial driving.The existence and the uniqueness of the solution of the differential equation, and that the system is asymptotically stable in a big scope are proved. Control and motion characteristics of the system are analyzed, and the control function of the needle valve throttling area and the cam curve law as manipulated variables is elaborated. The system is a closedloop process control system. In simulation, the dynamic process of arresting and whether the criteria are meet are shown. 针对新型飞机拦阻系统工作原理作了简要阐述,给出了系统的数学模型,明确了系统属于二阶复杂非线性自治系统,在初始状态激励下作自由运动。证明了微分方程的解存在且惟一,并证明了系统是大范围渐近稳定的,分析了系统的运动及控制特性,阐述了针阀节流面积及凸轮曲线规律作为控制量对系统的控制作用,该系统属于闭环程序控制系统。通过样例仿真,展示了飞机被拦阻的动态过程以及拦阻指标的满足状况。
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