摘要
研制了由直流无刷电机驱动的250kN伺服曲柄压力机试验样机,以直流无刷电机取代普通异步电机,取消了机械飞轮和离合器,驱动电路中配有大电容,以储存和释放电能。对压力机驱动和传动系统进行了理论分析,建立了机电系统的数学模型;根据样机参数进行了数值仿真和实验研究,二者结果十分接近,证明了数学模型的正确性;实验样机可以获得滑块的任意工作曲线,实现工作特性的柔性化;电容器可以起到"电子飞轮"储放能量的作用,在实验条件下,冲裁时电网瞬时峰值电流可减少86.3%。
The authors developed an experimental 250kN servo crank press driven by a brushless DC motor. The common asynchronous motor was substituted and the mechanical flywheel and clutch were canceled. A big capacitor was used in the circuit in order to save and release electric energy. Theoretic analysis on the driving and transmission system of the press was carried out and the mathematic model of the electromechanical system was established. Both numerical simulation and experiments were done and the results coincide each other, proving the correctness of the model. The servo crank press can get any desired stroke curves, as an ＂electric flywheel＂, saving and releasing realizing the working flexibility. The capacitor can run electric energy and reducing the current shock by 86%.
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2009年第13期1546-1550,共5页
China Mechanical Engineering
基金
广东省科技攻关项目(2006B11901004)
关键词
成形装备
机械压力机
交流伺服电机
数值仿真
forming equipment
mechanical press
AC servo motor
numerical simulation
