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    • 84. 发明授权
    • Piezoelectric rotary pump
    • 压电式旋转泵
    • US06787972B2
    • 2004-09-07
    • US10113640
    • 2002-03-29
    • Chulho KimSantiago C. Sanday
    • Chulho KimSantiago C. Sanday
    • F04B4308
    • H02N2/101
    • A high power and high torque density piezoelectric axial pump is developed using torsional actuator tube (stator) directly coupled to the rotor via two one way clutches. A cylindrical torsional actuator is comprised of a plurality of tubular piezoelectric ceramic segments poled along their length, aligned in alternate polarity and bonded together with intervening electrodes. When an alternating electric field is applied to the electrodes across adjacent segments to actuate the segments in their shear resonance mode, an end of the cylindrical actuator moves in a direction perpendicular to the length of the actuator in response to the applied electric field. This full cycle pump two sets of one way clutches positioned at the other end of the cylindrical actuator tube such that both ends of the tube move in opposite angular directions. These rotary displacements contribute alternatively from both ends of the cylindrical actuator (stator) are selectively transmitted to the rotor in unidirectional rotary motion via a two sets of one-way clutches. The clutches are built into both ends of the stator tube in such an orientation that the minute strokes are accumulated by converting the high frequency mechanical vibrations into continuous (or step-wise) motion of the rotor. Thus the power generated in the piezoelectric element is converted directly into rotary motion of the rotor with alternate blades for pumping fluids or slurry materials; the coupling mechanism results in a highly efficient pump. Specific values of the torsional angle and torque can be tailored for each application, by varying the actuator material, geometry and the applied alternating electric field.
    • 使用通过两个单向离合器直接耦合到转子的扭矩致动器管(定子)开发出高功率和高扭矩密度的压电轴向泵。 圆柱形扭转致动器由沿其长度极化的多个管状压电陶瓷部件组成,并以交替极性排列并与中间电极结合在一起。 当交替电场施加到跨越相邻段的电极以在其剪切共振模式下致动段时,圆柱形致动器的端部响应于所施加的电场在垂直于致动器的长度的方向上移动。 该全循环泵将两组单向离合器定位在圆柱形致动器管的另一端,使得管的两端沿相反的角度方向移动。 这些由圆柱形致动器(定子)两端提供的旋转位移通过两组单向离合器被选择性地传递到单向旋转运动中的转子。 离合器以这样的方向被构建在定子管的两端中,即通过将高频机械振动转换成转子的连续(或逐步)运动来累积微小的行程。 因此,在压电元件中产生的功率被直接转换成具有用于泵送流体或浆料的替代叶片的转子的旋转运动; 耦合机构产生高效的泵。 可以通过改变致动器材料,几何形状和施加的交变电场来为每个应用定制扭转角和扭矩的特定值。
    • 85. 发明授权
    • Piezoelectric torsional vibration driven motor
    • 压电式扭转振动驱动电机
    • US06417601B1
    • 2002-07-09
    • US09697716
    • 2000-10-27
    • Chulho Kim
    • Chulho Kim
    • H01L4104
    • H02N2/101
    • A high power and high torque density piezoelectric motor is developed using torsional actuator tube (stator) directly coupled to the rotor via one or two one way clutches. A cylindrical torsional actuator is comprised of a plurality of tubular piezoelectric ceramic segments poled along their length, aligned in alternate polarity and bonded together with intervening electrodes. When an alternating electric field is applied to the electrodes across adjacent segments to actuate the segments in their shear resonance mode, an end of the cylindrical actuator moves in a direction perpendicular to the length of the cylindrical actuator in response to the applied electric field. In a half cycle torsional motor, the angular motion of the end of the cylindrical actuator is transmitted to a rotor via a one way roller clutch positioned at one end of the cylindrical actuator. A full cycle motor has a second one way clutch positioned at the other end of the cylindrical actuator tube such that both ends of the tube vibrate in opposite angular directions. These rotary displacements contributed alternatively from both ends of the cylindrical actuator (stator) are selectively transmitted to the rotor in unidirectional rotary motion via a set of one-way clutches. The clutches are built into both ends of the stator tube in such an orientation that the minute strokes are accumulated by converting the high frequency mechanical vibrations into continuous (or step-wise) motion of the rotor. Thus the power generated in the piezoelectric element is converted directly into rotary motion of the rotor, and thus this coupling mechanism results in a highly efficient motor. Specific values of the torsional angle and torque can be tailored for each application, by varying the actuator material, geometry and the applied alternating electric field.
    • 使用通过一个或两个单向离合器直接耦合到转子的扭转致动器管(定子)开发出高功率和高扭矩密度的压电电动机。 圆柱形扭转致动器由沿其长度极化的多个管状压电陶瓷部件组成,并以交替极性排列并与中间电极结合在一起。 当交替电场施加到跨越相邻段的电极以在其剪切共振模式下致动段时,响应于所施加的电场,圆柱形致动器的端部沿垂直于圆柱形致动器的长度的方向移动。 在半循环扭转马达中,圆柱形致动器的端部的角运动通过位于圆柱形致动器一端的单向滚柱离合器传递到转子。 全循环电动机具有位于圆柱形致动器管的另一端的第二单向离合器,使得管的两端在相反的角度方向上振动。 由圆柱形致动器(定子)的两端作出的这些旋转位移通过一组单向离合器被选择性地传递到单向旋转运动中的转子。 离合器以这样的方向被构建在定子管的两端中,即通过将高频机械振动转换成转子的连续(或逐步)运动来累积微小的行程。 因此,压电元件中产生的功率直接转换为转子的旋转运动,因此该耦合机构产生高效率的电动机。 可以通过改变致动器材料,几何形状和施加的交变电场来为每个应用定制扭转角和扭矩的特定值。
    • 86. 发明授权
    • Torsional electrostrictive actuators
    • 扭转电致伸缩执行机构
    • US6020674A
    • 2000-02-01
    • US961999
    • 1997-10-31
    • Oiming ZhangLeslie E. CrossChulho KimManfred Kahn
    • Oiming ZhangLeslie E. CrossChulho KimManfred Kahn
    • H01L41/09H02N2/04H01L41/08
    • H01L41/0993
    • A torsional actuator includes a plurality of segments, each segment having a substantially rectangular shape. Each segment is comprised of an electroactive material that is poled along an elongated dimension of the rectangular shape. The segments are arranged side-by-side, with adjacent segments poled in opposing directions along their long dimensions. Conductors are positioned between adjacent sides of the side-by-side segments, with all of the juxtaposed segments being bound together in an integral structure. A power supply is connected to the conductors and applies oppositely poled electric fields across adjacent segments to cause like shear deformations of each of the segments and a resultant angular rotation of a non-fixed end thereof.
    • 扭转致动器包括多个段,每个段具有大致矩形的形状。 每个部分由沿着矩形形状的细长尺寸极化的电活性材料组成。 这些段并排布置,其相邻段沿其长尺寸在相反的方向上极化。 导体位于并排段的相邻侧之间,所有并置段以一体结构结合在一起。 电源连接到导体并且在相邻的段上施加相反极化的电场,以引起每个段的类似剪切变形以及其非固定端的合成角旋转。
    • 87. 发明授权
    • Pneumatic rod loading apparatus
    • 气动杆装载装置
    • US5839177A
    • 1998-11-24
    • US510633
    • 1995-08-03
    • Chulho Kim
    • Chulho Kim
    • H01L41/22
    • H01L41/37Y10T29/42
    • A rod feeder assembly composed of elongated tubular members arranged in vical courses and disposed in a box, the tubular members being flush at their downstream end and provided with a loading section at the upstream or the opposite end. The tubular members are of the same length in the same course but are shorter in the upper courses. The method for automatically feeding rods into a matrix includes the steps of randomly disposing the rods on the loading sections of the tubular members, aligning and positioning the rods in the tubular members by vibrating the tubular members in an inclined disposition, and transferring the rods from the rod feeder assembly to the matrix.
    • 杆饲喂组件由细长的管状构件组成,它们以垂直方向排列并设置在箱体中,管状构件在其下游端处齐平且在上游或相对端设置有装载部分。 管状构件在相同的过程中具有相同的长度,但在上部的过程中较短。 用于将棒自动送入基体的方法包括以下步骤:将棒放置在管状构件的装载部分上,通过以倾斜的配置振动管状构件,将杆对准和定位在管状构件中,并将杆从 将送丝机组装到基体上。
    • 89. 发明授权
    • Transducers and method for making same
    • 传感器及其制作方法
    • US5325011A
    • 1994-06-28
    • US76135
    • 1993-06-09
    • Manfred KahnChulho Kim
    • Manfred KahnChulho Kim
    • H01L41/083H01L41/08H01L41/187
    • H01L41/083H01L41/113H01L41/27
    • Elongated electrically nonconducting transducer preforms are made from a ff resin. The preforms have grooves in their upper and lower surfaces. Transducer elements may be formed from stacked preforms whereby grooves in their upper and lower surfaces form compartments between adjoining stacked preforms. PZT rods are disposed in the grooves disposed on the upper surface of each stacked preform, and a soft resin surrrounds the rods and fills the compartment. The method for making the transducer assembly includes the steps of loading by gravity the rods into the upper grooves of the preforms; stacking the loaded preforms so that upper grooves in the lower preform communicate with lower grooves in the upper preform, thus forming cavities; flowing a soft resin around the rods; and curing the soft resin.
    • 细长的非导电传感器预制件由刚性树脂制成。 预制件在其上表面和下表面具有凹槽。 传感器元件可以由堆叠的预成型件形成,由此其上表面和下表面中的凹槽形成相邻堆叠的预制件之间的隔室。 PZT棒设置在设置在每个层叠的预制件的上表面上的凹槽中,并且软树脂覆盖杆并填充隔室。 用于制造换能器组件的方法包括以下步骤:通过重力将杆装载到预成型件的上槽中; 堆叠加载的预成型件,使得下预制件中的上槽与上预制件中的下槽连通,从而形成空腔; 将软树脂绕在杆上; 并固化软树脂。