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    • 4. 发明授权
    • Air-fuel ratio control system for internal combustion engine
    • 内燃机空燃比控制系统
    • US08726637B2
    • 2014-05-20
    • US13565291
    • 2012-08-02
    • Tooru SekiguchiAtsuhiro MiyauchiTakeshi AokiMichinori TaniSeiji Watanabe
    • Tooru SekiguchiAtsuhiro MiyauchiTakeshi AokiMichinori TaniSeiji Watanabe
    • F01N3/08F02D41/00
    • F02D41/0085F02D41/1408F02D41/1455F02D2041/288
    • An oscillation signal is generated to oscillate the air-fuel ratio with a set frequency which is different from a 0.5th-order frequency (half of the frequency corresponding to a rotational speed of the engine). Air-fuel ratio perturbation control is performed to oscillate the air-fuel ratio according to the oscillation signal. An intensity of the 0.5th-order frequency component and the set frequency component contained in the detected air-fuel ratio signal are calculated. A determination parameter applied to determining an imbalance degree of air-fuel ratios corresponding to the plurality of cylinders is calculated according to the two intensities and determines an imbalance failure that the imbalance degree of the air-fuel ratios exceeds an acceptable limit. A predicted imbalance value, indicative of a predicted value of the imbalance degree, is calculated, and an amplitude of the oscillation signal is set according to the predicted imbalance value.
    • 产生振荡信号,以与不同于0.5次频率(对应于发动机的转速的一半频率)的设定频率来振荡空燃比。 执行空燃比扰动控制,以根据振荡信号使空燃比振荡。 计算包含在检测的空燃比信号中的0.5次频率分量和设定频率分量的强度。 根据两个强度计算用于确定对应于多个气缸的空燃比的不平衡度的确定参数,并且确定空燃比的不平衡度超过可接受极限的失衡失效。 计算表示不平衡度的预测值的预测不平衡值,根据预测的不平衡值设定振动信号的振幅。
    • 10. 发明授权
    • Electric motor drive control apparatus
    • 电动机驱动控制装置
    • US08339076B2
    • 2012-12-25
    • US12662882
    • 2010-05-10
    • Takeshi AokiSubrata Saha
    • Takeshi AokiSubrata Saha
    • H02P6/16
    • H02P6/16G01D5/24452H02P6/15
    • An electric motor drive control apparatus includes a detection angle obtaining section that obtains the detection angle of the resolver; a correction information storage section that stores correction information for correcting the detection angle, in association with a modulation ratio that is a ratio of an effective value of a fundamental wave component of the AC voltage to the system voltage; and a detection angle correcting section that obtains the correction information from the correction information storage section, based on the modulation ratio at the time the detection angle obtaining section obtains the detection.
    • 一种电动机驱动控制装置,包括获取旋转变压器的检测角度的检测角取得部, 校正信息存储部分,其与作为交流电压的基波分量的有效值与系统电压的比率的调制比相关联地存储用于校正检测角度的校正信息; 以及检测角度校正部,其基于检测角度获取部获取检测时的调制率,从校正信息存储部获取校正信息。