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    • 3. 发明申请
    • CONTROL SYSTEM FOR AC MOTOR
    • 交流电机控制系统
    • US20140159622A1
    • 2014-06-12
    • US14073405
    • 2013-11-06
    • Akiyoshi MORIITetsuya NOMURAMakoto NAKAMURAMikio YAMAZAKI
    • Akiyoshi MORIITetsuya NOMURAMakoto NAKAMURAMikio YAMAZAKI
    • H02P6/00
    • H02P21/0085B04B13/003H01H3/26H02P6/15
    • A converter controls a system voltage, which is a DC link voltage of an inverter, in accordance with a voltage command value. The inverter outputs a rectangular wave voltage having the system voltage as amplitude to an AC motor during application of rectangular wave voltage control. During application of rectangular wave voltage control, a voltage command value for the system voltage is modified such that a current phase on a d-q plane of the AC motor is brought closer to a target current phase line. The target current phase line is set on an advance side relative to an optimal current phase line which is a set of current phases at which output torque is maximized for the same amplitude of a motor current in the AC motor.
    • A转换器根据电压指令值来控制作为逆变器的直流母线电压的系统电压。 在施加矩形波电压控制时,逆变器输出具有系统电压幅度的矩形波电压给交流电机。 在应用矩形波电压控制的过程中,改变了系统电压的电压指令值,使得交流电动机的d-q平面上的电流相位接近目标电流相位线。 目标电流相位线相对于最佳电流相位线设定在前进侧,该最佳电流相位线是对于交流电动机中的电动机电流的相同幅度的输出转矩最大化的一组电流相位。
    • 4. 发明申请
    • CONTROL SYSTEM FOR AC ELECTRIC MOTOR
    • 交流电动机控制系统
    • US20140125264A1
    • 2014-05-08
    • US14073146
    • 2013-11-06
    • Makoto NAKAMURAMikio YAMAZAKI
    • Makoto NAKAMURAMikio YAMAZAKI
    • H02P6/10
    • H02P6/10H02M3/1582H02P21/0089H02P27/085
    • Fluctuations in output of an AC electric motor are restrained without increasing electromagnetic noise of a boost converter. When subjecting the AC electric motor to rectangular wave voltage control, output torque T is controlled by varying a voltage phase φv. In a region where a voltage phase is large (φv=θ2), fluctuations in torque T relative to changes in a DC voltage VH corresponding to the amplitude of a rectangular wave voltage are larger than in a region where the voltage phase is small (φv=θ1). The AC electric motor is controlled such that the rectangular wave voltage control in a region where voltage phase φv is larger than a limit-phase line PLN indicated by a set of limit phases set for each DC voltage VH is avoided.
    • 在不增加升压转换器的电磁噪声的情况下,可以抑制交流电动机输出的波动。 当对交流电动机进行矩形波电压控制时,通过改变电压相位来控制输出转矩T。 在电压相位大的区域(&phgr; v =η 2)中,与矩形波电压的振幅对应的直流电压VH相对于变化的转矩T的波动大于电压相位 是小(&phgr; v =&thetas; 1)。 控制交流电动机,使得在电压相位v大于由针对每个直流电压VH设定的一组极限相指示的极限相线PLN的区域中的矩形波电压控制被避免。
    • 5. 发明申请
    • VARIABLE VALVE APPARATUS FOR INTERNAL COMBUSTION ENGINE
    • 用于内燃机的可变阀装置
    • US20130213329A1
    • 2013-08-22
    • US13611648
    • 2012-09-12
    • Makoto NAKAMURA
    • Makoto NAKAMURA
    • F01L1/18
    • F01L1/3442F01L1/044F01L13/0015F01L13/0026F01L2001/0473F01L2001/0537F01L2001/34453F01L2001/34469F01L2013/0073
    • A variable valve apparatus for an internal combustion engine includes a control shaft, a camshaft having first and second camshaft members rotatable relative to each other, a rotary cam rotating together with the second camshaft member for opening and closing of an exhaust valve, an eccentric drive cam rotating together with the first camshaft member, a rocker arm caused to swing with rotation of the eccentric drive cam, a swing cam caused to swing by the rocker arm for opening and closing of an intake valve, a control cam formed on the control shaft to change an operating position of the rocker arm according to a rotational phase of the control shaft and vary the amount of swinging movement of the swing cam, a phase control mechanism adapted to control a relative rotational phase of the first and second camshaft members and an actuator for rotating the control shaft.
    • 一种用于内燃机的可变气门装置,包括控制轴,具有可相对旋转的第一和第二凸轮轴构件的凸轮轴,与用于打开和关闭排气门的第二凸轮轴构件一起旋转的旋转凸轮,偏心驱动 凸轮与第一凸轮轴构件一起旋转,摇臂随着偏心驱动凸轮的旋转而摆动,摆动凸轮由摇臂摆动以打开和关闭进气门;控制凸轮,其形成在控制轴上 根据控制轴的旋转相位改变摇臂的操作位置并改变摆动凸轮的摆动运动量;相位控制机构,其适于控制第一和第二凸轮轴构件的相对旋转相位;以及 用于旋转控制轴的执行器。