重载机车动态轴重转移补偿仿真研究

Simulation Researchon Heavy Load Locomotive Dynamic Axle Loadtransfer Compensation

重载机车在实际运行中,如果轴重转移过大会造成减载轴空转,从而影响机车整车牵引力的利用率。为了解决上述问题,提出了一种重载机车动态轴重转移的补偿方法,对重载电力机车牵引控制策略进行优化。在传统粘着控制策略的基础上建立转矩分配机制,根据干扰观测器动态观测出的各轴粘着力,计算得到机车动态轴重转移量,进而对给定牵引转矩进行动态分配。在Simpack环境下构建轴控式B0-B0四轴重载机车模型,基于Simpack-Matlab联合仿真平台对补偿前后的轴重转移状态进行对比分析。结果表明,上述方法可以使机车各轴空转率基本相同,有效提高了整车的粘着利用率。

When heavy load locomotive runs, excessive axle load transfer will cause load reduction axle idling, which will influence the traction utilization ratio of locomotive. To solve this problem, a dynamic axle load transfer compensation method is proposed to optimize traction control strategy of heavy load electric locomotive. Torque distri- bution mechanism was established on the traditional adhesion control strategy, and the adhesive forces of each axle were observed dynamically according to the disturbance observer, and the dynamic axle load transfer of locomotive was calculated, then the given torque was dynamically distributed. On the Simpack software environment, a B0 - B0 four axles heavy load locomotive model was constructed. The comparation and analysis of the axle loadtransfer status before and after compensation were carried out on the Simpack - Matlab co - simulation platform. The result shows that the method can make the idling rate of each axle have little difference, and improve the adhesion utilization rate of the whole locomotive effectively.