Patents by Inventor Alex Kurnia
Alex Kurnia 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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Patent number: 8892395Abstract: An angular position of a rotating device is detected by sensing and counting high-resolution transitions of high-resolution digital sensors in response to the rotating device rotating; sensing low-resolution transitions of a low-resolution digital sensor in response to the rotating device rotating, the low-resolutions transitions being unevenly spaced apart; determining an angular position of the rotating device in response to determining a number of high-resolution transitions between pairs of low-resolution transitions.Type: GrantFiled: February 21, 2012Date of Patent: November 18, 2014Assignee: Continental Automotive Systems, Inc.Inventors: Patrick A. O'Gorman, Rene Vivanco, Alex Kurnia
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Patent number: 8589110Abstract: A cost-effective system architecture and apparatus for programmable automatic power supply testing. The system utilizes board level interface between various system testing modules and an Automatic Test Controller (ATC). The ATC receives coded test requests from the software on an industrial PC and control the various testing modules inside ATC to execute the tests. Test results were sent back to the PC and saved in a result file. A single industrial PC can control two or more ATC's and test two or more power supply units simultaneously. The ATC based test system is lower cost than the conventional Automatic Test Equipment which uses device level interface and standardized test devices.Type: GrantFiled: March 3, 2009Date of Patent: November 19, 2013Assignee: Synergistic Technologies Solutions, Inc.Inventors: Guang Liu, Alex Kurnia Choi
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Patent number: 8466646Abstract: The position of a rotor of a motor is determined. The motor includes a stator having a plurality of coils. The rotor includes at least one rotating magnetic field device. When the rotor is moving below a threshold speed, the current in the coils is measured. A pre-programmed data structure is accessed. The data structure stores stator currents associated with predetermined rotor positions. A first absolute position of the rotor is determined from the data structure according to the measured current from each of the coils. When the rotor is moving above the threshold speed, one or more rising or falling edges of magnetic field strength associated with the at least one rotating magnetic field device are sensed. At least one timing aspect of the rising and falling edges of magnetic field strength are compared to determine a second absolute position of the rotor.Type: GrantFiled: February 21, 2011Date of Patent: June 18, 2013Assignee: Continental Automotive Systems, Inc.Inventors: Patrick A. O'Gorman, Rene Vivanco, Alex Kurnia
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Publication number: 20120235674Abstract: An angular position of a rotating device is detected by sensing and counting high-resolution transitions of high-resolution digital sensors in response to the rotating device rotating; sensing low-resolution transitions of a low-resolution digital sensor in response to the rotating device rotating, the low-resolutions transitions being unevenly spaced apart; determining an angular position of the rotating device in response to determining a number of high-resolution transitions between pairs of low-resolution transitions.Type: ApplicationFiled: February 21, 2012Publication date: September 20, 2012Applicant: CONTINENTAL AUTOMOTIVE SYSTEMS, INC.Inventors: Patrick A. O'Gorman, Rene Vivanco, Alex Kurnia
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Patent number: 8121811Abstract: Methods and systems for detecting an angular position of a rotating device are disclosed, including sensing and counting high-resolution transitions of a high-resolution digital sensor in response to the rotating device rotating; sensing low-resolution transitions of a low-resolution digital sensor in response to the rotating device rotating, the low-resolutions transitions being spaced apart at uneven angles; determining an angular position of the rotating device in response to determining a number of high-resolution transitions between pairs of low-resolution transitions.Type: GrantFiled: April 2, 2008Date of Patent: February 21, 2012Assignee: Continental Automotive Systems, Inc.Inventors: Patrick A. O'Gorman, Rene Vivanco, Alex Kurnia
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Publication number: 20110248658Abstract: The position of a rotor of a motor is determined. The motor includes the rotor and a stator and the stator includes a plurality of coils. The rotor further includes at least one rotating magnetic field device. When the rotor is moving below a threshold speed, the current in each of the plurality of coils of the stator is measured. A pre-programmed data structure is accessed. The pre-programmed data structure stores a plurality of stator currents associated with a plurality of predetermined rotor positions. A first absolute position of the rotor is determined from the data structure according to the measured current from each of the plurality of coils. When the rotor is moving above the threshold speed, one or more rising or falling edges of magnetic field strength associated with the at least one rotating magnetic field device of the rotor are sensed. At least one timing aspect of the rising and falling edges of magnetic field strength are compared to determine a second absolute position of the rotor.Type: ApplicationFiled: February 21, 2011Publication date: October 13, 2011Applicant: CONTINENTAL AUTOMOTIVE SYSTEMS, INC.Inventors: Patrick A. O'Gorman, Rene Vivanco, Alex Kurnia
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Patent number: 7915888Abstract: Methods and systems for detecting an angular position of an electric motor are disclosed, including sending an electrical pulse through a stator coil of the electric motor, determining an approximate angular position of a rotor of the electric motor in response to detecting an timing of a returning electrical pulse from the stator coil, the timing of the returning electrical pulse being indicative of the angular position of the rotor; and determining an accurate position of the rotor in response to sensing a transition of a digital sensor in response to the rotor rotating relative to the stator, the transition being indicative of the accurate position.Type: GrantFiled: April 2, 2008Date of Patent: March 29, 2011Assignee: Continental Automotive Systems, Inc.Inventors: Patrick A. O'Gorman, Rene Vivanco, Alex Kurnia
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Publication number: 20100225466Abstract: A cost-effective system architecture and apparatus for programmable automatic power supply testing. The system utilizes board level interface between various system testing modules and an Automatic Test Controller (ATC). The ATC receives coded test requests from the software on an industrial PC and control the various testing modules inside ATC to execute the tests. Test results were sent back to the PC and saved in a result file. A single industrial PC can control two or more ATC's and test two or more power supply units simultaneously. The ATC based test system is lower cost than the conventional Automatic Test Equipment which uses device level interface and standardized test devices.Type: ApplicationFiled: March 3, 2009Publication date: September 9, 2010Inventors: Guang Liu, Alex Kurnia Choi
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Publication number: 20090251089Abstract: Methods and systems for detecting an angular position of an electric motor are disclosed, including sending an electrical pulse through a stator coil of the electric motor, determining an approximate angular position of a rotor of the electric motor in response to detecting an timing of a returning electrical pulse from the stator coil, the timing of the returning electrical pulse being indicative of the angular position of the rotor; and determining an accurate position of the rotor in response to sensing a transition of a digital sensor in response to the rotor rotating relative to the stator, the transition being indicative of the accurate position.Type: ApplicationFiled: April 2, 2008Publication date: October 8, 2009Applicant: Temic Automotive of North America, Inc.Inventors: Patrick A. O'Gorman, Rene Vivanco, Alex Kurnia
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Publication number: 20090254301Abstract: Methods and systems for detecting an angular position of a rotating device are disclosed, including sensing and counting high-resolution transitions of a high-resolution digital sensor in response to the rotating device rotating; sensing low-resolution transitions of a low-resolution digital sensor in response to the rotating device rotating, the low-resolutions transitions being spaced apart at uneven angles; determining an angular position of the rotating device in response to determining a number of high-resolution transitions between pairs of low-resolution transitions.Type: ApplicationFiled: April 2, 2008Publication date: October 8, 2009Applicant: Temic Automotive of North America, Inc.Inventors: Patrick A. O'Gorman, Rene Vivanco, Alex Kurnia