斜辊矫直机辊型曲线的啮合算法研究

斜辊矫直机矫正辊和管棒材呈线接触,矫正辊与管棒材之间运动存在啮合关系,符合啮合原理,由此推导出斜辊矫直机的矫正辊的理想型线（双曲线）,并与传统的包络线法进行比较,工厂试验表明,新算法较包络线法精度基本相同。

啮合算法及结构参数对谐波传动的影响

为分析谐波传动啮合算法及结构参数对装置传动性能的影响,代入柔轮转角精确计算方法及近似计算方法,分别得到基于包络啮合理论的精确啮合算法及近似啮合算法,对不同算法的渐开线齿廓谐波传动共轭区域、共轭齿廓进行了分析,并研究了径向变形量系数及波发生器形式等参数对其影响规律。研究结果表明:渐开线谐波传动存在两个共轭区域及"双共轭"现象,且近似啮合算法、径向变形量系数、波发生器形式对共轭区域一啮合角度、共轭齿廓、啮合偏差影响较小,对共轭区域二啮合角度、共轭齿廓、啮合偏差影响较大。

Study of engaged performance regulation in controlled transfer clutch of 4WD car based on genetic sliding mode control

This paper investigates an approach to improve the engagement quality of controlled transfer clutch mode in 4 wheel drive(WD) car from three considerations of reducing friction,smoothening responsiveness and alleviating jerk.The method utilizes an improved sliding mode control with genetic algorithm instead of simplified mode to determine appropriate values of parameters in control close- loop.The simulation results show that the method is effective for improving the engagement quality of coupling satisfying different design needs for 4WD car,as well as robustness even if input torque is changed at a certain range.