Patents by Inventor Edward Piedra
Edward Piedra 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: 11548758Abstract: Methods and systems for monitoring a dynamic compensation control system of an elevator system are provided. The methods and systems include monitoring a first motion state sensor signal generated by a first motion state sensor, the first motion state sensor associated with an elevator machine, monitoring a second motion state sensor signal generated by a second motion state sensor, the second motion state sensor located on an elevator car, determining an operational status of the second motion state sensor based on an analysis of the first motion state sensor signal and the second motion state sensor signal, and when it is determined that a failure status of the second motion state sensor is present, the method further comprises deactivating a dynamic compensation control mode of operation of the elevator system.Type: GrantFiled: June 5, 2018Date of Patent: January 10, 2023Assignee: OTIS ELEVATOR COMPANYInventors: Randy Roberts, Edward Piedra, Bruce P. Swaybill
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Publication number: 20220033219Abstract: An elevator system including: an elevator car configured to travel through an elevator shaft; a first guide beam extending vertically through the elevator shaft, the first guide beam including a first surface and a second surface opposite the first surface; a beam climber system configured to move the elevator car through the elevator shaft, the beam climber system including: a first wheel in contact with the first surface; and a first electric motor configured to rotate the first wheel; a first motor brake mechanically connected to the first electric motor, the first motor brake configured to slow the elevator car; and a brake condition based monitoring system configured to detect when the first motor brake is dragging.Type: ApplicationFiled: July 31, 2020Publication date: February 3, 2022Inventors: Randy Roberts, Edward Piedra, Sam Thieu Wong, James L. Hubbard
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Publication number: 20220033218Abstract: An elevator system including: an elevator car configured to travel through an elevator shaft; a first guide beam extending vertically through the elevator shaft, the first guide beam including a first surface and a second surface opposite the first surface; a beam climber system configured to move the elevator car through the elevator shaft, the beam climber system including: a first wheel in contact with the first surface; and a first electric motor configured to rotate the first wheel; and a controller configured to determine wheel slippage in a low friction area along the first guide beam.Type: ApplicationFiled: July 31, 2020Publication date: February 3, 2022Inventors: Randy Roberts, Edward Piedra, Sam Thieu Wong, Brad Guilani, Don Eager
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Patent number: 11235948Abstract: Methods and systems of controlling elevators including detecting a landing stop for an elevator car, measuring load information associated with the stop, controlling stopping of the elevator at the landing using a machine based on at least one of the detected landing and the measured load information and performing dynamic compensation control of a motion state of the elevator with a computing system and the elevator machine. The dynamic compensation control includes receiving motion state information related to at least one motion state of the elevator car at the computing system, receiving the landing and load information at the computing system, applying a filter to the received information and generating a first control signal, and producing a control output from the first control signal to control the elevator machine to minimize oscillations, vibrations, excessive position deflections, and/or bounce of the elevator car at the detected landing.Type: GrantFiled: March 19, 2018Date of Patent: February 1, 2022Assignee: OTIS ELEVATOR COMPANYInventors: Edward Piedra, Randy Roberts, David Ginsberg, Ronnie E. Thebeau, Konda Reddy Chevva, XiaoBin Tang
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Patent number: 10822197Abstract: A method of operating an elevator system is provided. The method includes powering, using a battery, the elevator system when an external power source is unavailable. The method also includes controlling, using a controller, a plurality of components of the elevator system. The controlling comprises operating at least one of the battery, an elevator car, a drive unit, and a brake. The method further includes determining, using the controller, a run profile of the elevator car in response to a selected deceleration. The method yet further includes operating, using the controller, the elevator car in response to the run profile determined, and determining, using the controller, an actual velocity of the elevator car.Type: GrantFiled: October 13, 2017Date of Patent: November 3, 2020Assignee: OTIS ELEVATOR COMPANYInventor: Edward Piedra
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Patent number: 10538412Abstract: A method includes determining that an elevator car is arriving at a landing at which re-leveling is anticipated; upon the elevator car arriving at the landing at which re-leveling is anticipated, initiating the at least one of a brake cycling operation and a power cycling operation to reduce elevator car sag at the landing; monitoring transfer of weight to or from the elevator car at the landing over a period of time; terminating the at least one of the brake cycling operation and the power cycling operation upon at least one of (i) the transfer of weight to or from the elevator car at the landing over the period of time being less than a threshold and (ii) the elevator car sag at the landing meeting a sag threshold.Type: GrantFiled: March 7, 2019Date of Patent: January 21, 2020Assignee: OTIS ELEVATOR COMPANYInventors: Amir Lotfi, Randall Keith Roberts, Ronnie E. Thebeau, Michael Garfinkel, Edward Piedra, Dennis Hanvey, Daniel Rush
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Patent number: 10513414Abstract: A system including a drive portion, and an external computing device in communication with the drive portion, wherein the external computing device is configured to receive operational data from the drive portion, determine operational parameters based at least in part on the operational data, determine whether the operational parameters are valid, and automatically transmit commands to the drive portion if the operational parameters are valid.Type: GrantFiled: December 17, 2015Date of Patent: December 24, 2019Assignee: OTIS ELEVATOR COMPANYInventors: Yang Wang, HanJong Kim, Christopher S. Czerwinski, Edward Piedra, Shashank Krishnamurthy, Draguna Vrabie, Rui Huang
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Publication number: 20190202658Abstract: A method includes determining that an elevator car is arriving at a landing at which re-leveling is anticipated; upon the elevator car arriving at the landing at which re-leveling is anticipated, initiating the at least one of a brake cycling operation and a power cycling operation to reduce elevator car sag at the landing; monitoring transfer of weight to or from the elevator car at the landing over a period of time; terminating the at least one of the brake cycling operation and the power cycling operation upon at least one of (i) the transfer of weight to or from the elevator car at the landing over the period of time being less than a threshold and (ii) the elevator car sag at the landing meeting a sag threshold.Type: ApplicationFiled: March 7, 2019Publication date: July 4, 2019Inventors: Amir Lotfi, Randall Keith Roberts, Ronnie E. Thebeau, Michael Garfinkel, Edward Piedra, Dennis Hanvey, Daniel Rush
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Patent number: 10252879Abstract: Embodiments are directed to determining that an elevator car of an elevator system is approaching a landing, obtaining, by a controller, a value for at least one parameter associated with the elevator system based on the determination that the elevator car is approaching the landing, determining that the elevator car arrives at the landing within a threshold distance, determining, by the controller, when to engage in at least one of a brake cycling operation and a power cycling operation based on the value for the at least one parameter and based on determining that the elevator car arrives at the landing within the threshold distance, and initiating the at least one of a brake cycling operation and a power cycling operation at a time corresponding to the determination of when to engage in the at least one of a brake cycling operation and a power cycling operation.Type: GrantFiled: February 6, 2014Date of Patent: April 9, 2019Assignee: OTIS ELEVATOR COMPANYInventors: Amir Lotfi, Randall Keith Roberts, Ronnie E. Thebeau, Michael Garfinkel, Edward Piedra, Dennis Hanvey, Daniel Rush
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Publication number: 20190002235Abstract: Methods and systems for monitoring a dynamic compensation control system of an elevator system are provided. The methods and systems include monitoring a first motion state sensor signal generated by a first motion state sensor, the first motion state sensor associated with an elevator machine, monitoring a second motion state sensor signal generated by a second motion state sensor, the second motion state sensor located on an elevator car, determining an operational status of the second motion state sensor based on an analysis of the first motion state sensor signal and the second motion state sensor signal, and when it is determined that a failure status of the second motion state sensor is present, the method further comprises deactivating a dynamic compensation control mode of operation of the elevator system.Type: ApplicationFiled: June 5, 2018Publication date: January 3, 2019Inventors: Randy Roberts, Edward Piedra, Bruce P. Swaybill
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Publication number: 20180273343Abstract: Methods and systems of controlling elevators including detecting a landing stop for an elevator car, measuring load information associated with the stop, controlling stopping of the elevator at the landing using a machine based on at least one of the detected landing and the measured load information and performing dynamic compensation control of a motion state of the elevator with a computing system and the elevator machine. The dynamic compensation control includes receiving motion state information related to at least one motion state of the elevator car at the computing system, receiving the landing and load information at the computing system, applying a filter to the received information and generating a first control signal, and producing a control output from the first control signal to control the elevator machine to minimize oscillations, vibrations, excessive position deflections, and/or bounce of the elevator car at the detected landing.Type: ApplicationFiled: March 19, 2018Publication date: September 27, 2018Inventors: Edward Piedra, Randy Roberts, David Ginsberg, Ronnie E. Thebeau, Konda Reddy Chevva, XiaoBin Tang
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Publication number: 20180257907Abstract: A system including a drive portion, and an external computing device in communication with the drive portion, wherein the external computing device is configured to receive operational data from the drive portion, determine operational parameters based at least in part on the operational data, determine whether the operational parameters are valid, and automatically transmit commands to the drive portion if the operational parameters are valid.Type: ApplicationFiled: December 17, 2015Publication date: September 13, 2018Inventors: Yang WANG, HanJong KIM, Christopher S. CZERWINSKI, Edward PIEDRA, Shashank KRISHNAMURTHY, Draguna VRABIE, Rui HUANG
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Patent number: 9957131Abstract: Embodiments are directed to calculating a current associated with a motor of an elevator based on an output of a speed regulator, and controlling the elevator based on the current. Embodiments are directed to examining a feeder current obtained via a converter current sensor of a regenerative drive during a peak power condition, and regulating a speed of an elevator based on the feeder current.Type: GrantFiled: December 13, 2012Date of Patent: May 1, 2018Assignee: OTIS ELEVATOR COMPANYInventors: Ismail Agirman, Edward Piedra
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Publication number: 20180037437Abstract: A method of operating an elevator system is provided. The method includes powering, using a battery, the elevator system when an external power source is unavailable. The method also includes controlling, using a controller, a plurality of components of the elevator system. The controlling comprises operating at least one of the battery, an elevator car, a drive unit, and a brake. The method further includes determining, using the controller, a run profile of the elevator car in response to a selected deceleration. The method yet further includes operating, using the controller, the elevator car in response to the run profile determined, and determining, using the controller, an actual velocity of the elevator car.Type: ApplicationFiled: October 13, 2017Publication date: February 8, 2018Inventor: Edward Piedra
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Publication number: 20180016114Abstract: According to one embodiment, a method of operating an elevator system is provided. The method includes detecting, using a controller, when an external power source is unavailable. The method also includes controlling, using the controller, a plurality of components of the elevator system. The controlling comprises operating at least one of an elevator car, a drive unit, an inverter and a brake. The method further includes detecting, using the controller, an original direction of travel of the elevator car. The method yet further includes detecting, using the controller, a mode of the elevator car, wherein the mode includes at least one of a motoring mode, a near balance mode, and a regenerative mode. The method includes determining, using the controller, a target floor. The method also includes adjusting, using the controller, a velocity of the elevator car to reach the target floor in response to the mode detected.Type: ApplicationFiled: September 28, 2017Publication date: January 18, 2018Inventors: Prasanna Nagarajan, Amir Lotfi, Edward Piedra
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Patent number: 9862568Abstract: A method of operating an elevator system is provided. The method includes powering, using a battery, the elevator system when an external power source is unavailable. The method also includes controlling, using a controller, a plurality of components of the elevator system. The controlling comprises operating at least one of the battery, an elevator car, a drive unit, and a brake. The method further includes determining, using the controller, a run profile of the elevator car in response to a selected deceleration. The method yet further includes operating, using the controller, the elevator car in response to the run profile determined, and determining, using the controller, an actual velocity of the elevator car.Type: GrantFiled: February 26, 2016Date of Patent: January 9, 2018Assignee: OTIS ELEVATOR COMPANYInventor: Edward Piedra
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Patent number: 9809418Abstract: According to one embodiment, a method of operating an elevator system is provided. The method includes detecting, using a controller, when an external power source is unavailable. The method also includes controlling, using the controller, a plurality of components of the elevator system. The controlling comprises operating at least one of an elevator car, a drive unit, an inverter and a brake. The method further includes detecting, using the controller, an original direction of travel of the elevator car. The method yet further includes detecting, using the controller, a mode of the elevator car, wherein the mode includes at least one of a motoring mode, a near balance mode, and a regenerative mode. The method includes determining, using the controller, a target floor. The method also includes adjusting, using the controller, a velocity of the elevator car to reach the target floor in response to the mode detected.Type: GrantFiled: February 29, 2016Date of Patent: November 7, 2017Assignee: OTIS ELEVATOR COMPANYInventors: Prasanna Nagarajan, Amir Lotfi, Edward Piedra
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Publication number: 20170247223Abstract: A method of operating an elevator system is provided. The method includes powering, using a battery, the elevator system when an external power source is unavailable. The method also includes controlling, using a controller, a plurality of components of the elevator system. The controlling comprises operating at least one of the battery, an elevator car, a drive unit, and a brake. The method further includes determining, using the controller, a run profile of the elevator car in response to a selected deceleration. The method yet further includes operating, using the controller, the elevator car in response to the run profile determined, and determining, using the controller, an actual velocity of the elevator car.Type: ApplicationFiled: February 26, 2016Publication date: August 31, 2017Inventor: Edward Piedra
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Publication number: 20170247222Abstract: According to one embodiment, a method of operating an elevator system is provided. The method includes detecting, using a controller, when an external power source is unavailable. The method also includes controlling, using the controller, a plurality of components of the elevator system. The controlling comprises operating at least one of an elevator car, a drive unit, an inverter and a brake. The method further includes detecting, using the controller, an original direction of travel of the elevator car. The method yet further includes detecting, using the controller, a mode of the elevator car, wherein the mode includes at least one of a motoring mode, a near balance mode, and a regenerative mode. The method includes determining, using the controller, a target floor. The method also includes adjusting, using the controller, a velocity of the elevator car to reach the target floor in response to the mode detected.Type: ApplicationFiled: February 29, 2016Publication date: August 31, 2017Inventors: Prasanna Nagarajan, Amir Lotfi, Edward Piedra
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Publication number: 20170174472Abstract: Embodiments are directed to determining that an elevator car of an elevator system is approaching a landing, obtaining, by a controller, a value for at least one parameter associated with the elevator system based on the determination that the elevator car is approaching the landing, determining that the elevator car arrives at the landing within a threshold distance, determining, by the controller, when to engage in at least one of a brake cycling operation and a power cycling operation based on the value for the at least one parameter and based on determining that the elevator car arrives at the landing within the threshold distance, and initiating the at least one of a brake cycling operation and a power cycling operation at a time corresponding to the determination of when to engage in the at least one of a brake cycling operation and a power cycling operation.Type: ApplicationFiled: February 6, 2014Publication date: June 22, 2017Inventors: Amir Lotfi, Randall Keith Roberts, Ronnie E. Thebeau, Michael Garfinkel, Edward Piedra, Dennis Hanvey, Daniel Rush