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    • 3. 发明授权
    • Piezoelectric microblower
    • 压电微型鼓风机
    • US08684707B2
    • 2014-04-01
    • US12959462
    • 2010-12-03
    • Shungo KanaiGaku KamitaniYoko Kaneda
    • Shungo KanaiGaku KamitaniYoko Kaneda
    • F04B17/00F04B35/04
    • F04B45/047F04B2201/0806F04B2201/12
    • A piezoelectric microblower includes a vibrating plate including a piezoelectric element and arranged to be driven in a bending mode by applying a voltage of a predetermined frequency to the piezoelectric element, and a blower body arranged to fix both ends or a periphery of the vibrating plate and to define a blower chamber between the blower body and the vibrating plate, an opening being provided in a portion of the blower body facing a central portion of the vibrating plate. In a portion of the blower chamber corresponding to the central portion of the vibrating plate, a partition is provided around the opening and a resonance space is defined inside of the partition. A size of the resonance space is set such that a driving frequency of the vibrating plate and a Helmholtz resonance frequency of the resonance space correspond to each other.
    • 一种压电微型鼓风机包括:振动板,其包括压电元件,并配置为通过向压电元件施加预定频率的电压而以弯曲模式驱动;以及鼓风机主体,其布置成将振动板的两端或周边固定,以及 在所述鼓风机主体和所述振动板之间限定鼓风机室,所述鼓风机主体的面向所述振动板的中心部分的部分设置有开口。 在对应于振动板的中心部分的鼓风机室的一部分中,在开口周围设置隔板,并且在隔板内限定共振空间。 谐振空间的大小被设定为使得振动板的驱动频率和谐振空间的亥姆霍兹共振频率彼此对应。
    • 4. 发明授权
    • Marine steering system having dual hydraulic and electronic output
    • 船用转向系统具有双液压和电子输出
    • US06564739B2
    • 2003-05-20
    • US09931745
    • 2001-08-20
    • Peter Doetsch
    • Peter Doetsch
    • B63H2500
    • B63H25/12B63H25/24B63H25/30F04B1/20F04B9/14F04B2201/12
    • A marine steering system operable in either power steering or manual hydraulic modes. The system employs a modified helm pump having a single rotatable input shaft connectable to a steering wheel and dual hydraulic and electronic output. An encoder, such as an optical incremental encoder or hall effect device, is mechanically coupled to the input shaft for generating an electronic steering control signal representative of the change in position of the steering wheel. In the power steering mode, the electronic steering signal is processed by an amplifier controlling the operation of an auxiliary pumpset connected to the rudder steering cylinder. A bypass manifold disposed between the helm pump and the steering cylinder disables the hydraulic steering system in the power steering mode. In the event of power failure, the bypass manifold valves are opened and the system automatically switches to manual hydraulic steering.
    • 可在动力转向或手动液压模式下操作的船用转向系统。 该系统采用改进的舵泵,其具有可连接到方向盘的单个可旋转输入轴和双液压和电子输出。 诸如光学增量编码器或霍尔效应装置的编码器机械地联接到输入轴,以产生代表方向盘位置变化的电子转向控制信号。 在动力转向模式中,电子转向信号由控制连接到方向舵缸的辅助泵组的操作的放大器进行处理。 设置在舵泵和转向缸之间的旁通歧管在动力转向模式下禁止液压转向系统。 在断电的情况下,旁路歧管阀打开,系统自动切换到手动液压转向。