Patent application number | Description | Published |
20090015248 | POSITION FEEDBACK FOR SELF BEARING MOTOR - A sensing mechanism includes a magnetic source, a magnetic flux sensor, a sensor backing on which the magnetic source and flux sensor are mounted, and a ferromagnetic target, where the magnetic source, magnetic flux sensor, and ferromagnetic target are positioned to form a magnetic circuit from the magnetic source to the target, from the target to the sensor, and returning to the magnetic source through the sensor backing. | 01-15-2009 |
20090033173 | MOTOR STATOR WITH LIFT CAPABILITY AND REDUCED COGGING CHARACTERISTICS - A motor includes a stator and a rotor, equipped to be movable in at least a first direction relative to the stator, the rotor operably interfacing the stator so that a motor force is generated in a first direction, where the stator comprises an anti-cogging element configured to generate anti-cogging forces on the rotor in at least the first direction and a second direction at an angle to the first direction. | 02-05-2009 |
20110025310 | POSITION FEEDBACK FOR SELF BEARING MOTOR - A sensing mechanism includes a magnetic source, a magnetic flux sensor, a sensor backing on which the magnetic source and flux sensor are mounted, and a ferromagnetic target, where the magnetic source, magnetic flux sensor, and ferromagnetic target are positioned to form a magnetic circuit from the magnetic source to the target, from the target to the sensor, and returning to the magnetic source through the sensor backing. | 02-03-2011 |
20110118855 | SCALABLE MOTION CONTROL SYSTEM - A control system includes a clustered architecture having a master controller, a central control section including one or more first remote controllers under direct control of the master controller, and a distributed control section including a cluster controller controlled by the master controller. The cluster controller controls the activities of one or more second remote controllers. Each of the first and second remote controllers are utilized to drive one or more axes. | 05-19-2011 |
Patent application number | Description | Published |
20090001907 | COMMUTATION OF AN ELECTROMAGNETIC PROPULSION AND GUIDANCE SYSTEM - A method of commutating a motor includes calculating an adjustment electrical angle, and utilizing the adjustment electrical angle in a common set of commutation equations so that the common set of commutation equations is capable of producing both one and two dimensional forces in the motor. | 01-01-2009 |
20090001917 | REDUCED-COMPLEXITY SELF-BEARING BRUSHLESS DC MOTOR - A method of commutating a motor includes operatively interfacing a stator and actuated component of the motor, arranging at least two winding sets relative to the actuated component, and independently controlling the at least two winding sets so that with the at least two winding sets the actuated component is both driven and centered. | 01-01-2009 |
20090243413 | ROBOT DRIVE WITH MAGNETIC SPINDLE BEARINGS - A drive section for a substrate transport arm including a frame, at least one stator mounted within the frame, the stator including a first motor section and at least one stator bearing section and a coaxial spindle magnetically supported substantially without contact by the at least one stator bearing section, where each drive shaft of the coaxial spindle includes a rotor, the rotor including a second motor section and at least one rotor bearing section configured to interface with the at least one stator bearing section, wherein the first motor section is configured to interface with the second motor section to effect rotation of the spindle about a predetermined axis and the at least one stator bearing section is configured to effect at least leveling of a substrate transport arm end effector connected to the coaxial spindle through an interaction with the at least one rotor bearing section. | 10-01-2009 |
20120045300 | HIGH SPEED SUBSTRATE ALIGNER APPARATUS - In accordance to an exemplary embodiment of the disclosed embodiments, a substrate aligner apparatus is presented, the substrate aligner apparatus having a frame adapted to allow a substrate transporter to transport a substrate to and from the aligner apparatus, an inverted chuck capable of holding the substrate and movably connected to the frame by a chuck driveshaft engaged to the inverted chuck for moving the inverted chuck relative to the frame and effecting alignment of the substrate, a sensing device located between the chuck and chuck driveshaft for detecting a position determining feature of the substrate, and a substrate transfer mechanism movably connected to the frame and located inside the frame below the inverted chuck for moving the substrate from the inverted chuck to the substrate transporter. | 02-23-2012 |
20130028700 | ROBOT DRIVE WITH MAGNETIC SPINDLE BEARINGS - A drive section for a substrate transport arm including a frame, at least one stator mounted within the frame, the stator including a first motor section and at least one stator bearing section and a coaxial spindle magnetically supported substantially without contact by the at least one stator bearing section, where each drive shaft of the coaxial spindle includes a rotor, the rotor including a second motor section and at least one rotor bearing section configured to interface with the at least one stator bearing section, wherein the first motor section is configured to interface with the second motor section to effect rotation of the spindle about a predetermined axis and the at least one stator bearing section is configured to effect at least leveling of a substrate transport arm end effector connected to the coaxial spindle through an interaction with the at least one rotor bearing section. | 01-31-2013 |
20140301818 | TRANSPORT APPARATUS - A substrate transport apparatus for transporting substrates, the substrate transport apparatus including a frame, at least one transfer arm connected to the frame, at least one end effector mounted to the at least one transfer arm and at least one substrate support pad disposed on the at least one end effector, the at least one substrate support pad has a configuration that effects increased friction force, resulting from an increased friction coefficient, in at least one predetermined direction. | 10-09-2014 |
Patent application number | Description | Published |
20090076389 | Imaging by time reversal beamforming - A high resolution imaging system is used to detect and locate targets using time reversal in rich scattering environments, where the number of scatterers is significantly larger than the number of antennas. Our imaging system performs two major tasks by time reversal: clutter mitigation and target focusing. Clutter mitigation is accomplished through waveform reshaping to suppress the clutter returns. After the suppressed clutter is subtracted from the returned signal, a second time reversal for target focusing is performed. A final image is then obtained by beamforming. | 03-19-2009 |
20090240136 | Contrast-invariant registration of cardiac and renal magnetic resonance perfusion images - A system and method are provided for contrast-invariant registration of images, the system including a processor, an imaging adapter or a communications adapter for receiving an image data sequence, a user interface adapter for selecting a reference frame from the image sequence or cropping a region of interest (ROI) from the reference frame, a tracking unit for tracking the ROI across the image sequence, and an estimation unit for segmenting the ROI in the reference frame or performing an affine registration for the ROI; and the method including receiving an image sequence, selecting a reference frame from the image sequence, cropping a region of interest (ROI) from the reference frame, tracking the ROI across the image sequence, segmenting the ROI in the reference frame, and performing an affine registration for the ROI. | 09-24-2009 |
20140025316 | Temperature Compensation in Wave-Based Damage Detection Systems - A method performed by a processing device, the method comprising: obtaining first waveform data indicative of traversal of a first signal through a structure at a first time; applying a scale transform to the first waveform data and the second waveform data; computing, by the processing device and based on applying the scale transform, a scale-cross correlation function that promotes identification of scaling behavior between the first waveform data and the second waveform data; performing one or more of: computing, by the processing device and based on the scale-cross correlation function, a scale factor for the first waveform data and the second waveform data; and computing, by the processing device and based on the scale-cross correlation function, a scale invariant correlation coefficient between the first waveform data and the second waveform data. | 01-23-2014 |
Patent application number | Description | Published |
20090033549 | Application of time reversal to synthetic aperture imaging - A method and apparatus for target focusing and ghost image removal in synthetic aperture radar (SAR) is disclosed. Conventional SAR is not designed for imaging targets in a rich scattering environment. In this case, ghost images due to secondary reflections appear in the SAR images. We demonstrate, how, from a rough estimate of the target location obtained from a conventional SAR image and using time reversal, time reversal techniques can be applied to SAR to focus on the target with improved resolution, and reduce or remove ghost images. | 02-05-2009 |
20130089260 | Systems, Methods, and Software Implementing Affine-Invariant Feature Detection Implementing Iterative Searching of an Affine Space - Feature-matching methods for attempting to match visual features in one image with visual features in another image. Feature-matching methods disclosed progressively sample the affine spaces of the images for visual features, starting with a course sampling and iteratively increasing the density of sampling. Once a predetermined threshold number of unambiguous matches has been satisfied, the iterative sampling and matching can be stopped. The iterative sampling and matching methodology is especially, but not exclusively, suited for use in fully affine invariant feature matching applicants and can be particularly computationally efficient for comparing images that have large differences in observational parameters, such as scale, tilt, object-plane rotation, and image-plane rotation. The feature-matching methods disclosed can be useful in object/scene recognition applications. The disclosed methods can be implemented in software and various object/scene recognition systems. | 04-11-2013 |