中文摘要：

针对目前塑壳式断路器操作机构的设计过程中存在性能判定依据单一、专用的操作机构性能分析软件缺乏的问题,分析了断路器操作机构分闸与分断的区别,采用拉格朗日方程建立了断路器操作机构的动力学模型,分析了操作机构的等效转动惯量和广义作用力的确定方法。建立了操作机构设计参数与性能指标之间的映射关系,来支持操作机构的性能指标分析,提出包括动触头—基座角度、手柄弹簧力、弹簧测试角度等的断路器操作机构的动态性能指标体系。基于建立的动力学模型对ADAMS软件进行二次开发,以辅助断路器操作机构的动力学分析,输出速度、位移、力等性能曲线,帮助实现操作机构设计参数的分析优化,并以一款CDM1-100型断路器操作机构的设计为例对所提动力学模型进行了验证。

英文摘要：

Aiming at the problems of single performance judgment basis and insufficient special performance analysis software in design process of Molded Case Circuit Breaker （MCCB） operating mechanism, the differences between breaking and tripping of MCCB operating mechanism were analyzed, the dynamics model of operating mechanism was established based on Lagrangian dynamics equation, and the determination methods on equivalent moment of in- ertia and generalized force were analyzed. On this basis, the mapping relation between design parameters and per- formance index of operating mechanism was established to support the performance index analysis of MCCB operat- ing mechanism, and the dynamic performance index system of MCCB operating mechanism including movable con- tact-base angle, spring force of handle, spring test angle and so on was proposed. /Based on the proposed dynamics model, ADAMS software was second developed to assist dynamics analysis of operating mechanism, and to output the performance curves of speed, displacement and force, which could realize the analysis and optimization of operat- ing mechanisrn＇s design parameters. A practical case study on designing a CDMI-100 type circuit breaker was provid- ed to verify the proposed dynamics model.