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Method and System for Capillary Force Actuators
For micro-electromechanical systems (MEMS) and bio-MEMS (e.g., micro total analysis systems, or MTAS), a variety of force actuation methods have been used to either move structures or to induce stress in stationary structures, including electromagnetic, electrostatic, pneumatic, thermal, piezoelectric, magnetostrictive, among others. Each of these ...
Published: 3/7/2012   |   Inventor(s): Carl Knospe
Keywords(s): Electronics
Category(s): Electronic & Optical, Mechanical & Environmental
Gas Expanded Lubricants
Executive SummaryThis invention provides a method for lubricating bearings during operation in which mixtures of lubricant and high-pressure gas are supplied inside a reinforced casing. The gas serves to control the viscosity and thermal conductivity of the lubricant such that bearing characteristics, such as power loss, can be minimized as loading...
Published: 3/7/2012   |   Inventor(s): Andres Clarens, Paul Allaire, Amir Younan, Shibo Wang
Keywords(s):  
Category(s): Mechanical & Environmental
Self-Sensing Integrated System for Determining the Position of a Shaft in a Magnetic Bearing
Magnetic bearings levitate a rotating object (typically a rotor) with a magnetic field and are unstable in open-loop operation. Position feedback control is required to maintain the rotor in a centered position. Typically, a separate position sensor is used to directly measure the rotor's position for use in this feedback loop. Self-sensing magneti...
Published: 3/7/2012   |   Inventor(s): Paul Allaire, Wei Jiang
Keywords(s):  
Category(s): Mechanical & Environmental
Hybrid 5-Axis Magnetic Bearing System
BackgroundMagnetic bearings are commonly used in many rotating machines, such as pumps, compressors and turbines. In such machines, a five-axis, active magnetic bearing configuration is frequently employed; this configuration must maintain power to electromagnets for each of the five axes. In this arrangement, one axial active magnetic thrust beari...
Published: 3/7/2012   |   Inventor(s): Paul Allaire, Wei Jiang
Keywords(s):  
Category(s): Mechanical & Environmental
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