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Designing container shipping network under changing demand and freight rates
container shipping ship-slot allocating empty container repositioning container configuration average unit ship-slot profit optimization
2010/10/29
This paper focuses on the optimization of container shipping network and its operations under changing cargo demand and freight rates. The problem is formulated as a mixed integer non-linear programmi...
考虑油门开度快速变化的自动变速器换挡控制策略(AMT Shift Control Strategy Based on the Fleetness Changing of the Gas Pedal Aperture)
自动变速器 油门开度变化率 换挡
2009/9/25
在机械自动变速器三参数(油门开度、车速、加速度信号)换挡控制中,汽车惯性大会引起汽车车速响应速度相对于油门开度变化的滞后,在油门开度变化率比较大的情况下易出现频繁换挡现象。本文将油门开度变化率作为输入参数,提出了换挡四参数模糊控制方法。同时针对四参数模糊控制输入参数多、模糊规则多的问题,提出了双模糊四参数控制器方法,减少了模糊规则的数量,提高了处理器的运行能力。仿真结果验证了控制策略的正确性。