设计了PLC控制液压伺服系统来实现数控落地铣镗床主轴箱动态平衡的控制。在此液压系统中，应用电液伺服阀和伺服控制系统来控制活塞杆的压力和位移，实现对主轴箱因倾斜而产生误差的补偿。这样不仅可以提高机床加工精度，而且可以改善立柱的受力-design of PLC controlled hydraulic servo system to achieve CNC Milling-landing spindle box dynamic control. In this hydraulic system, t

Elastohydrodynamic simulation of piston-ring

The AeroSim blockset provides a complete set of tools for developing nonlinear 6-degree-of-freedom aircraft dynamic models. The Simulink blocks include the nonlinear equations of motion, linear aerodynamics based on component build-up, piston-e