straight-ray approximation

The positions of connecting rod point that corresponding to the self-tangential curve,the curves with single tipped point and double tipped points and curve with approximate straight-line segments,which possess utmost values in track synthesis,had been made clear.

采用几何解析法研究曲柄摇杆机构特殊对称连杆曲线的产生条件,明确轨迹综合中极具价值的自切曲线、带单尖点和双尖点曲线,以及带近似直线段曲线所对应的连杆点位置,同时得到对称连杆曲线的形态种类及其分布规律。

Aiming at the normal maximum power point tracker (MPPT) algorithm’s some deficiencies in low tracing rate and concussion near the maximum power point, a new MPPT methods—beeline approximation method combined with perturbation and observation method with changing perturbation step was presented.

针对普通的最大功率算法在最大功率点振荡、追踪速度不高等缺点,提出了一种新的最大功率点跟踪控制方法——直线近似法结合变步长扰动观察法的最大功率追踪方法。