柱塞倾斜式变量泵恒功率控制功能原理性误差的研究

Study of the Constant Power Control Principle Error of Variable Pump with Inclined Piston

从恒功率变量机构之间的运动关系出发,分析恒功率控制阀和滚轮柱对摇杆的作用力,推导倾斜柱塞的运动方程,计算斜盘倾角与斜柱塞位移之间的函数关系,建立从斜盘倾角到工作压力和输出流量的映射,证明并计算柱塞倾斜式变量泵恒功率控制功能存在的原理性误差。

From the movement relationship between constant power variable mechanism, acting force of constant power control valve and contact roller was analyzed, equation of inclined piston was derived, function relationship between the angle of screw swash plate and the displacement of inclined piston was calculated, mapping from the angle of screw swash plate to working pressure and out flow was established, constant power control principle error of variable pump with inclined piston was proved.