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1种满足控制计划要求的凸轮型面设计方法 被引量:2
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作者 王曦 《航空发动机》 2013年第1期1-5,78,共6页
针对液压机械控制装置要求按给定的稳态控制计划设计杠杆、凸轮、弹簧等结构性能参数的问题,采用了考虑离心飞重块工作在燃油中的浮力效应和液体离心力效应对离心飞重换算轴向离心力的修正方法,精确地计算了转速摆动活门的转速-弹簧位... 针对液压机械控制装置要求按给定的稳态控制计划设计杠杆、凸轮、弹簧等结构性能参数的问题,采用了考虑离心飞重块工作在燃油中的浮力效应和液体离心力效应对离心飞重换算轴向离心力的修正方法,精确地计算了转速摆动活门的转速-弹簧位移关系的输入输出特性;利用转速给定装置凸轮杠杆机构的叠加特性解决了油门杆角度和发动机进口温度同时变化时相关的控制计划反映在指令弹簧上的位移计算问题;同时从刚架的运动特性规律中抽象出几何不变性,提出了1种按控制计划的不同要求对转速指令凸轮、慢车温度修正凸轮和大车温度修正凸轮进行设计的方法。设计的凸轮按其内在的输入输出特性关系通过各模块之间的信息传递关系以液压机械的控制方式实现了发动机所要求的复杂转速控制计划,对这一设计方法进行了对比验证,可满足设计要求,具有通用性。 展开更多
关键词 凸轮设计方法 控制计划 离心飞重 几何不变性 弹簧位移输入输出特性
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Elastic energy storage technology using spiral spring devices and its applications:A review 被引量:1
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作者 Shiwei Guo Li Yang +2 位作者 Yanping Yuan Zutao Zhang Xiaoling Cao 《Energy and Built Environment》 2023年第6期669-679,共11页
Harvesting and storing energy is a key problem in some applications.Elastic energy storage technology has the advantages of wide-sources,simple structural principle,renewability,high effectiveness and environmental-fr... Harvesting and storing energy is a key problem in some applications.Elastic energy storage technology has the advantages of wide-sources,simple structural principle,renewability,high effectiveness and environmental-friendliness.This paper elaborates the operational principles and technical properties and summarizes the appli-cability of elastic energy storage technology with spiral springs.Elastic energy storage using spiral spring can realize the balance between energy supply and demand in some applications.Continuous input-spontaneous out-put working style can provide simple energy sources for short-time energy supply,and provide strong moment impact and rapid start,or realize the energy conservation for reciprocating movement.Uniform output working style can realize energy output with uniform speed for timekeeping and load-driving.Random input working style can harvest and store random mechanical energy or convert small torque into a large moment to drive external loads.Finally,this paper proposes new researches and developments of elastic energy storage technology on new materials and structures,mechanical properties and structural dynamics analyses,design and control for new functions. 展开更多
关键词 Mechanical energy storage Elastic energy storage Spiral spring system Energy input/output characteristics Implementation mechanism
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