The kinetic characteristics of the clamping unit of plastic injection molding machine that is controlled by close loop with newly developed double speed variable pump unit are investigated. Considering the wide variat...The kinetic characteristics of the clamping unit of plastic injection molding machine that is controlled by close loop with newly developed double speed variable pump unit are investigated. Considering the wide variation of the cylinder equivalent mass caused by the transmission ratio of clamping unit and the severe instantaneous impact force acted on the cylinder during the mold closing and opening process, an adaptive control principle of parameter and structure is proposed to improve its kinetic performance. The adaptive correlation between the acceleration feedback gain and the variable mass is derived. The pressure differential feedback is introduced to improve the dynamic performance in the case of small inertia and heavy impact load. The adaptation of sum pressure to load is used to reduce the energy loss of the system. The research results are verified by the simulation and experiment, The investigation method and the conclusions are also suitable for the differential cylinder system controlled by the traditional servo pump unit.展开更多
为降低注塑机在移模过程中的能量损失,结合伺服泵和插装阀的优势,设计了二板式注塑机移模系统并进行仿真分析。以二板式注塑机移模系统为研究对象,结合液压仿真软件AMESim和动态系统仿真软件Matlab/Simulink的优越性,建立了二板式注塑...为降低注塑机在移模过程中的能量损失,结合伺服泵和插装阀的优势,设计了二板式注塑机移模系统并进行仿真分析。以二板式注塑机移模系统为研究对象,结合液压仿真软件AMESim和动态系统仿真软件Matlab/Simulink的优越性,建立了二板式注塑机移模系统联合仿真模型,进行联合仿真分析,结果表明:由伺服电机驱动定量泵的注塑机在移模阶段总能耗为55 k J,比普通电机驱动定量泵节能27%;验证了仿真模型的正确性;为联合仿真技术在二板式注塑机设计上的应用提供借鉴。展开更多
基金This project is supported by National Natural Science Foundation of China (No.50275102)Opening Foundation of State Key Lab of Fluid Power Transmission and Control of Zhejiang University, China (No.GZKF2002004).
文摘The kinetic characteristics of the clamping unit of plastic injection molding machine that is controlled by close loop with newly developed double speed variable pump unit are investigated. Considering the wide variation of the cylinder equivalent mass caused by the transmission ratio of clamping unit and the severe instantaneous impact force acted on the cylinder during the mold closing and opening process, an adaptive control principle of parameter and structure is proposed to improve its kinetic performance. The adaptive correlation between the acceleration feedback gain and the variable mass is derived. The pressure differential feedback is introduced to improve the dynamic performance in the case of small inertia and heavy impact load. The adaptation of sum pressure to load is used to reduce the energy loss of the system. The research results are verified by the simulation and experiment, The investigation method and the conclusions are also suitable for the differential cylinder system controlled by the traditional servo pump unit.
文摘为降低注塑机在移模过程中的能量损失,结合伺服泵和插装阀的优势,设计了二板式注塑机移模系统并进行仿真分析。以二板式注塑机移模系统为研究对象,结合液压仿真软件AMESim和动态系统仿真软件Matlab/Simulink的优越性,建立了二板式注塑机移模系统联合仿真模型,进行联合仿真分析,结果表明:由伺服电机驱动定量泵的注塑机在移模阶段总能耗为55 k J,比普通电机驱动定量泵节能27%;验证了仿真模型的正确性;为联合仿真技术在二板式注塑机设计上的应用提供借鉴。
