摘要
通过控制伺服电机输出变角速度规律,设计并制造了伺服电机驱动的结晶器非正弦振动样机,建立了系统的弹性动力学模型,推导了系统运动学微分方程,分析了系统的固有频率及振型。结果表明:系统的固有频率和振型都随偏心轴的角度变化而周期变化,而与波形偏斜率和频率变化无关,在线调节频率和波形偏斜率时有利于系统的平稳运行。
The prototype of mold non-sinusoidal oscillation driven by servomotor was designed and manufactured through the controlling the angular speed of the servomotor. The elastic dynamics model was established. The motion kinematics differen- tial function was deduced. And the nature frequency and vibration mode were analyzed, Results showed that the system nature frequency and mode were periodic variable with the angular of the eccentric shaft, while independenti with the frequency and modification ratio. It was better for the smoothly running of the mold when the frequency and modification ratio were adjusted online.
出处
《机械设计》
CSCD
北大核心
2016年第11期77-81,共5页
Journal of Machine Design
基金
国家自然科学基金委员会与宝钢集团有限公司联合资助项目(U1260203)
国家自然科学基金资助项目(61403332)
河北省自然科学基金-钢铁联合基金资助项目(F201320329)
河北省高等学校创新团队领军人才培育计划资助项目(LJRC013)
河北科技大学博士启动基金资助项目(QD201247)
关键词
结晶器非正弦振动
伺服电机
固有频率
振型
mold non-sinusoidal oscillation
servomotor
nature frequency
vibration mode
