摘要
根据热力系准静态过程与流体连续性方程构造了活塞运动的力学模型,导出了气室压力变化过程的分段函数;利用描述周期性物理现象的点变换方法,给出了关于振子行程与冲击能的后继函数,并用相平面图分析了振子自激振动过程。
A mechanical model is developed on the bases of the quasi-static process in a thermal system and the fluid continuity equation,with a sectioned function derived for the pressure change process in air chamber.The point-transformation method available to describe the periodic physical phenomena is used to derive and sole a successor function of the stroke of pneumatic vibrator in relation with impact energy.Furthermore,the self-excited vibrating process of pneumatic vibrator is discussed utilizing a phase plane diagram.
关键词
振子
气动振子
大振幅
相平面图
pneumatic vibrator, point-transformation method, phase plane diagram,successor function,limit circle.
