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    • 8. 发明授权
    • Forklift engine control device
    • 叉车发动机控制装置
    • US08447477B2
    • 2013-05-21
    • US13640247
    • 2011-09-13
    • Yasuo HaradaYoshitaka OnoderaJun HashimotoHideyuki HiraiwaKazunori Nishimura
    • Yasuo HaradaYoshitaka OnoderaJun HashimotoHideyuki HiraiwaKazunori Nishimura
    • G06F7/70
    • G06F17/00B66F9/07572B66F9/20B66F17/003F02D29/00
    • A control device of a forklift engine that secures operability by keeping down fuel consumption when the accelerator pedal is floored in an unloaded or lightly loaded state, and once a heavy cargo is loaded, by lifting the cargo at a maximum lifting speed and traveling with maximum travel performance without acceleration problems. At least two maximum torque curves of different magnitudes are set in advance on a torque curve diagram. Then, the weight the cargo loaded on an attachment is measured. A threshold value for selecting at least two maximum torque curves is determined. If the measured weight is less than the threshold value, the maximum torque curve with a smaller maximum torque value is selected. If the measured weight is not less than the threshold value, the maximum torque curve with a larger maximum torque value is selected. The engine is controlled using the selected maximum torque curve.
    • 一种叉车发动机的控制装置,其通过在油门踏板处于无负载或轻载状态时降低燃料消耗来确保可操作性,并且一旦重载货物通过以最大提升速度提升货物并以最大速度行驶 旅行表现无加速问题。 预先在扭矩曲线图上设定不同大小的两个最大扭矩曲线。 然后,测量装载在附件上的货物的重量。 确定用于选择至少两个最大扭矩曲线的阈值。 如果测量重量小于阈值,则选择具有较小最大扭矩值的最大扭矩曲线。 如果测量重量不小于阈值,则选择具有较大最大扭矩值的最大扭矩曲线。 使用所选择的最大扭矩曲线控制发动机。
    • 9. 发明申请
    • RECEPTION DEVICE
    • 接收装置
    • US20090141836A1
    • 2009-06-04
    • US10582765
    • 2005-04-12
    • Naganori ShirakataYukihiro OmotoYoshio UrabeYasuo Harada
    • Naganori ShirakataYukihiro OmotoYoshio UrabeYasuo Harada
    • H04L27/06
    • H04L27/266H04L27/2613H04L27/2642H04L27/2659H04L27/2662H04L27/2675H04L27/2679H04L2027/0067H04L2027/0095
    • A reception device according to the present invention receives a transmission frame including a synchronization symbol string, having a synchronization symbol repeated multiple times, inserted before a data symbol string. The synchronization symbol is obtained by synthesizing a plurality of sub band symbols which are mutually orthogonal and having different carrier frequencies. The carrier frequencies of the sub band symbols are located at an equal predetermined frequency interval. The synchronization symbol includes a repeated synchronization pattern. The reception device detects a rough carrier frequency error from a phase difference of a synchronization pattern correlation value to correct the frequency, and then detects a residual frequency error from an inter-symbol phase difference of each sub band to correct the frequency. The reception device detects a sampling clock frequency error from an inter-sub band phase difference to correct the frequency. Thus, the demodulation error of the data symbol is reduced.
    • 根据本发明的接收装置在数据符号串之前接收包括具有重复多次的同步符号的同步符号串的传输帧。 通过合成相互正交且具有不同载波频率的多个子带符号来获得同步符号。 子带符号的载波频率位于相等的预定频率间隔。 同步符号包括重复的同步模式。 接收装置根据同步模式相关值的相位差检测粗略载波频率误差,以校正频率,然后从每个子带的符号间相位差检测残留频率误差,以校正频率。 接收装置从子频带相位差检测采样时钟频率误差,以校正频率。 因此,减少数据符号的解调错误。