Patents by Inventor Paul A. Remillard
Paul A. Remillard has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240393140Abstract: A Halbach-based magnetic position sensor includes a Halbach magnetic element having a spatially rotating magnetization pattern along an extent, producing a focused and augmented magnetic field on a working side relative to a magnetic field on a non-working side. A sensing element on the working side is co-configured with the Halbach magnetic element for relative motion therebetween. The sensing element includes encoder circuitry and magnetic sensors that sense the working-side magnetic field and produce corresponding sensor signals. The encoder circuitry translates the sensor signals into position signals indicating relative position between the sensing element and the Halbach magnetic element. In one example the Halbach magnetic element has a closed curve (e.g., substantially circular or ring-like) configuration.Type: ApplicationFiled: August 8, 2024Publication date: November 28, 2024Inventors: Paul A. Remillard, Deepak Surendran
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Patent number: 12146773Abstract: An opto-magnetic rotary position encoder includes a polarization optical encoder and a magnetic encoder, both configured for on-axis placement and operation with respect to a rotational axis of a rotating component. A polarization sensor digital control block and a magnetic sensor digital control block are configured and operative to combine polarizer channel position data and magnetic channel position data in a manner providing for one or more of (1) redundancy, (2) calibration, (3) monitoring performance of one channel in relation to the other channel, or (4) compensation or correction of one channel based on the other channel.Type: GrantFiled: May 19, 2022Date of Patent: November 19, 2024Assignee: Novanta CorporationInventors: Daniel J. Holmes, Paul A. Remillard, Deepak Surendran
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Patent number: 12123751Abstract: A Halbach-based magnetic position sensor includes a Halbach magnetic element having a spatially rotating magnetization pattern along an extent, producing a focused and augmented magnetic field on a working side relative to a magnetic field on a non-working side. A sensing element on the working side is co-configured with the Halbach magnetic element for relative motion therebetween. The sensing element includes encoder circuitry and magnetic sensors that sense the working-side magnetic field and produce corresponding sensor signals. The encoder circuitry translates the sensor signals into position signals indicating relative position between the sensing element and the Halbach magnetic element. In one example the Halbach magnetic element has a closed curve (e.g., substantially circular or ring-like) configuration.Type: GrantFiled: September 14, 2022Date of Patent: October 22, 2024Assignee: Novanta CorporationInventors: Paul A. Remillard, Deepak Surendran
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Publication number: 20230082380Abstract: A Halbach-based magnetic position sensor includes a Halbach magnetic element having a spatially rotating magnetization pattern along an extent, producing a focused and augmented magnetic field on a working side relative to a magnetic field on a non-working side. A sensing element on the working side is co-configured with the Halbach magnetic element for relative motion therebetween. The sensing element includes encoder circuitry and magnetic sensors that sense the working-side magnetic field and produce corresponding sensor signals. The encoder circuitry translates the sensor signals into position signals indicating relative position between the sensing element and the Halbach magnetic element. In one example the Halbach magnetic element has a closed curve (e.g., substantially circular or ring-like) configuration.Type: ApplicationFiled: September 14, 2022Publication date: March 16, 2023Inventors: Paul A. Remillard, Deepak Surendran
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Publication number: 20220373360Abstract: An opto-magnetic rotary position encoder includes a polarization optical encoder and a magnetic encoder, both configured for on-axis placement and operation with respect to a rotational axis of a rotating component. A polarization sensor digital control block and a magnetic sensor digital control block are configured and operative to combine polarizer channel position data and magnetic channel position data in a manner providing for one or more of (1) redundancy, (2) calibration, (3) monitoring performance of one channel in relation to the other channel, or (4) compensation or correction of one channel based on the other channel.Type: ApplicationFiled: May 19, 2022Publication date: November 24, 2022Inventors: Daniel J. Holmes, Paul A. Remillard, Deepak Surendran
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Patent number: 10536033Abstract: A communication system that involves superimposing data over DC power. The data takes the form of high bitrate digital signals, where the bitrate is much higher than 0 Hz (DC); this separation allows the AC signal to be easily separated from the DC power. The physical system consists of a two conductor cable, and integration is modular, in that multiple slaves can be connected and disconnected to a master through a routing bus also comprising two conductors. The master can communicate bi-directionally with the slave(s), and the data is encoded using DC-balanced encoding in an FPGA. The data is sent to and from a differential signaling transmitter/receiver pairs at each end of the cable. The system is may be used with position sensors, and provides the benefit of reducing cable costs and sensor size due to the decrease in number of conductors and elimination of power components in the sensor.Type: GrantFiled: March 23, 2017Date of Patent: January 14, 2020Assignee: Novanta CorporationInventors: Paul A. Remillard, Andrew M. Goldman, Mark Lang
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Publication number: 20170294805Abstract: A communication system that involves superimposing data over DC power. The data takes the form of high bitrate digital signals, where the bitrate is much higher than 0 Hz (DC); this separation allows the AC signal to be easily separated from the DC power. The physical system consists of a two conductor cable, and integration is modular, in that multiple slaves can be connected and disconnected to a master through a routing bus also comprising two conductors. The master can communicate bi-directionally with the slave(s), and the data is encoded using DC-balanced encoding in an FPGA. The data is sent to and from a differential signaling transmitter/receiver pairs at each end of the cable. The system is may be used with position sensors, and provides the benefit of reducing cable costs and sensor size due to the decrease in number of conductors and elimination of power components in the sensor.Type: ApplicationFiled: March 23, 2017Publication date: October 12, 2017Applicant: Novanta CorporationInventors: Paul A. Remillard, Andrew M. Goldman, Mark Lang
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Patent number: 9689717Abstract: Phase estimation apparatus processes sensor signals from sensors to estimate a phase of a periodically varying state of an object, such as position of a moving object. A phase estimation processor applies a first correlation calculation to simultaneously collected samples of the sensor signals to generate first quadrature values, where the first correlation calculation employs variable calculation values, and applies a phase calculation to the first quadrature values to generate the phase estimation. A pre-quadrature calibration circuit applies respective second correlation calculations to respective sequences of samples of the sensor signals individually to generate second quadrature values for each of the sensor signals, and applies phase and/or magnitude calculations to the sets of second quadrature values to generate the variable calculation values for the first correlation calculation, thereby compensate for the error component and improve accuracy of the estimated phase.Type: GrantFiled: August 27, 2014Date of Patent: June 27, 2017Assignee: Novanta CorporationInventors: Paul A. Remillard, Bruce A. Horwitz
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Publication number: 20150048242Abstract: Phase estimation apparatus processes sensor signals from sensors to estimate a phase of a periodically varying state of an object, such as position of a moving object. A phase estimation processor applies a first correlation calculation to simultaneously collected samples of the sensor signals to generate first quadrature values, where the first correlation calculation employs variable calculation values, and applies a phase calculation to the first quadrature values to generate the phase estimation. A pre-quadrature calibration circuit applies respective second correlation calculations to respective sequences of samples of the sensor signals individually to generate second quadrature values for each of the sensor signals, and applies phase and/or magnitude calculations to the sets of second quadrature values to generate the variable calculation values for the first correlation calculation, thereby compensate for the error component and improve accuracy of the estimated phase.Type: ApplicationFiled: August 27, 2014Publication date: February 19, 2015Inventors: Paul A. Remillard, Bruce A. Horwitz
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Patent number: 8612065Abstract: A position encoder provides one or more trigger outputs based on position signals developed within the encoder, in addition to traditional position output signals used by other system components such as a motion controller. The trigger outputs may be used directly by a triggered device, bypassing the motion controller and obviating any separate trigger generation electronics. The trigger output(s) can be fully synchronous with the encoder's position output signal(s) with essentially no latency or jitter, increasing accuracy and providing improved system performance. The trigger functionality can be incorporated in a variety of encoder types (e.g., absolute and incremental) and technologies (optical, magnetic, inductive etc.), and used in conjunction with different position output signal formats (e.g., quadrature, serial).Type: GrantFiled: March 5, 2010Date of Patent: December 17, 2013Assignee: GSI Group CorporationInventors: Andrew M. Goldman, Paul A. Remillard
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Publication number: 20110218695Abstract: A position encoder provides one or more trigger outputs based on position signals developed within the encoder, in addition to traditional position output signals used by other system components such as a motion controller. The trigger outputs may be used directly by a triggered device, bypassing the motion controller and obviating any separate trigger generation electronics. The trigger output(s) can be fully synchronous with the encoder's position output signal(s) with essentially no latency or jitter, increasing accuracy and providing improved system performance. The trigger functionality can be incorporated in a variety of encoder types (e.g., absolute and incremental) and technologies (optical, magnetic, inductive etc.), and used in conjunction with different position output signal formats (e.g., quadrature, serial).Type: ApplicationFiled: March 5, 2010Publication date: September 8, 2011Applicant: GSI GROUP CORPORATIONInventors: Andrew M. Goldman, Paul A. Remillard
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Patent number: 5210484Abstract: A heterodyning lock-in amplifier in which the reference signal is shifted up in frequency (as in prior art designs), but then shifted back down in frequency prior to mixing with the input signal.Type: GrantFiled: May 15, 1992Date of Patent: May 11, 1993Assignees: Louis R. Fantozzi, Lawrence KesslerInventors: Paul A. Remillard, Michael C. Amorelli