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1. 发明授权

US5015906A Electrostatic levitation control system for micromechanical devices 失效
标题翻译：微机械装置静电悬浮控制系统
公开(公告)号：US5015906A
公开(公告)日：1991-05-14
申请号：US431385
申请日：1989-11-03
申请人： Dong-Il D. Cho , Suresh Kumar , William N. Carr
发明人： Dong-Il D. Cho , Suresh Kumar , William N. Carr
IPC分类号： F16C17/00 , G01P15/08 , H02N1/00 , H02N13/00
CPC分类号： H02N13/00 , F16C17/00 , G01P15/08 , H02N1/004
摘要： A mass to be levitated is provided with an electrically conductive surface that is acted upon by an oscillating electrical force field generated by a plurality of charged conductive plates. The levitated mass is kept in static equilibrium in the electric field by driving the resonant circuit with an applied time varying voltage that has a frequency greater than the natural frequency of the resonant circuit. Motion of the mass is accomplished by providing actuator elements that are selectively charged to attract the mass in a given direction. Alternatively, the mass may be moved by employing a plurality of levitation control circuits that are sequentially energized.
摘要翻译：要悬浮的物质设置有由多个带电导电板产生的振荡电力场作用的导电表面。通过用频率大于谐振电路的固有频率的施加的时变电压驱动谐振电路，使悬浮质量在电场中保持静态平衡。质量的运动通过提供被选择性地带电以在给定方向上吸引质量的致动器元件来实现。或者，可以通过采用依次通电的多个悬浮控制电路来移动质量。

2. 发明授权

US5214727A Electrostatic microactuator 失效
标题翻译：静电微致动器
公开(公告)号：US5214727A
公开(公告)日：1993-05-25
申请号：US821962
申请日：1992-01-16
申请人： William N. Carr , Hsu-Nien Yang , Dong-Il D. Cho
发明人： William N. Carr , Hsu-Nien Yang , Dong-Il D. Cho
IPC分类号： G02B6/35
CPC分类号： G02B6/357 , G02B6/3508 , G02B6/3548 , G02B6/358
摘要： An electrostatic microactuator for moving an optical fiber is described and includes an actuator plate with opposed major surfaces and interspersed conductive and nonconductive portions. The actuator plate is physically engaged with the optical fiber so that the fiber moves with the actuator. First and second segmented, conductive, torque stators are disposed adjacent the opposed major surfaces of the actuator plate. Multiphase circuitry is connected to segments of the torque stators for applying phased signals thereto to induce a linear actuating force in the actuator plate. The phased signals applied to the first and second torque stators are balanced so as to positionally balance the actuator plate during its travels.
摘要翻译：描述了用于移动光纤的静电微致动器，并且包括具有相对的主表面和散布的导电和非导电部分的致动器板。致动器板与光纤物理接合，使得光纤与致动器一起移动。第一和第二分段导电扭矩定子邻近致动器板的相对的主表面设置。多相电路连接到扭矩定子的部分，以将相控信号施加到致动器板上以引起线性致动力。施加到第一和第二扭矩定子的相控信号是平衡的，以便在行进过程中使致动器板定位平衡。

3. 发明授权

US5187399A Levitated micromotor 失效
标题翻译：悬浮微电机
公开(公告)号：US5187399A
公开(公告)日：1993-02-16
申请号：US810386
申请日：1991-12-19
申请人： William N. Carr , Hong Yu , Dong-Il D. Cho
发明人： William N. Carr , Hong Yu , Dong-Il D. Cho
IPC分类号： H02N1/00 , H02N13/00
CPC分类号： H02N13/00 , H02N1/004
摘要： An electrostatically levitated micromotor is described that includes a generally planar rotor that exhibits an axis of symmetry and includes electrically conductive portions. A balanced stator arrangement is positioned adjacent the rotor and is connected to multi-phase circuitry for enabling the rotation of the rotor about its symmetry. A plurality of levitating electrodes are positioned about the rotor and circuitry is connected thereto for forming resonant circuits that include the conductive portion of the rotor and exhibit a natural resonant frequency. A power source energizes the resonant circuits at a frequency greater than the natural frequency and thereby enables stable levitation of the rotor.
摘要翻译：描述了一种静电悬浮的微型电动机，其包括呈现对称轴并且包括导电部分的大致平面的转子。平衡的定子装置定位在转子附近，并且连接到多相电路，以使转子围绕其对称旋转。多个悬浮电极围绕转子定位，并且电路连接到其上以形成包括转子的导电部分并且具有固有谐振频率的谐振电路。电源以大于固有频率的频率激励谐振电路，从而使转子稳定地悬浮。

4. 发明授权

US5190020A Automatic control system for IC engine fuel injection 失效
标题翻译： IC发动机燃油喷射自动控制系统
公开(公告)号：US5190020A
公开(公告)日：1993-03-02
申请号：US722546
申请日：1991-06-26
申请人： Dong-Il D. Cho
发明人： Dong-Il D. Cho
IPC分类号： F02D41/14 , F02D41/18 , G05B5/01
CPC分类号： G05B5/01 , F02D41/14 , F02D41/1401 , F02D41/1406 , F02D41/18 , F02D2041/143 , F02D2041/1433 , F02D2200/0402
摘要： An automatic control method and system for internal combustion (IC) engines fuel injection systems are described. This automatic control method is a nonlinear and global method, that applies directly to automotive engines whose dynamics are highly nonlinear and complex, in the global sense to all internally and externally changing operating and environmental conditions for all transients and quasi-steady-state operations. Furthermore, the automatic control method is robust to unmodeled dynamics and disturbances. The automatic control method consists of estimating or measuring the mass rate of air entering the combustion chambers of an engine, estimating or calculating its time rate of change, and applying prescribed closed loop feedback correction term. In this fuel injection control method, the current mass rate of fuel command is the sum of the previously commanded fueling rate, plus the dynamic correction term according to the change in the mass rate of air entering combustion chambers multiplied by the elapsed time duration between the two injection commands and divided by a desired air to fuel ratio, plus the sensor based feedback correction term specially structured to automatically adjust in accordance with the amount of mass rate of air entering combustion chambers and its time rate of change, and to automatically adapt to the changes in both external and internal conditions. The resulting system can provide stability robustness properties and optimal regulation of desired air to fuel ratio globally for the entire operating range of IC engines.
摘要翻译：描述了用于内燃（IC）发动机燃料喷射系统的自动控制方法和系统。这种自动控制方法是一种非线性和全局的方法，直接适用于动力学高度非线性和复杂的汽车发动机，在全球意义上，对于所有瞬态和准稳态运行的所有内部和外部变化的运行和环境条件。此外，自动控制方法对未建模的动力学和扰动是鲁棒的。自动控制方法包括估算或测量进入发动机燃烧室的空气的质量比，估计或计算其时间变化率，并应用规定的闭环反馈校正项。在这种燃料喷射控制方法中，目前的燃料质量指数是先前指令的加油速率加上根据进入燃烧室的空气的质量比的变化乘以动态校正项的总和乘以在两个喷射指令除以所需的空燃比，加上基于传感器的反馈校正项，其特别构造为根据进入燃烧室的空气的质量比量及其时间变化率自动调整，并自动适应外部和内部条件的变化。所得到的系统可以在IC发动机的整个工作范围内提供稳定的鲁棒性和全局期望的空燃比的最佳调节。

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