Patents Examined by Antony M. Paul
-
Patent number: 11474500Abstract: A method for configuring peer-to-peer communication in an industrial automation system including at least two control devices, each control device being arranged for hosting as separate instances an OPC UA server, an OPC UA subscriber service, and an OPC UA publisher service, the method including retrieving an OPC UA object list for each control device, the object list indicating all OPC UA objects managed by each respective control device, and presenting the OPC UA objects and control devices for user input. The method further including obtaining user input, configuring for each control device publisher and subscriber service parameters in a configuration file for each respective control device, and transferring the configuration file to the publisher and subscriber services of each respective control device. Also disclosed are an industrial automation system and industrial control devices configured to implement the disclosed method.Type: GrantFiled: June 9, 2020Date of Patent: October 18, 2022Assignee: Schneider Electric Industries SASInventor: Pascal Hampikian
-
Patent number: 11469701Abstract: A control system includes a motor controller coupled to a brushless direct current motor. The motor controller determines a first start time and a first duration for a first pulse and a second start time and a second duration for a second pulse relative to a commutation cycle of the motor. The motor controller energizes a winding of the motor with the first pulse and the second pulse within the commutation cycle.Type: GrantFiled: February 23, 2021Date of Patent: October 11, 2022Assignee: ebm-papst Inc.Inventor: Hogan Eng
-
Patent number: 11469704Abstract: A motor controller for an electric motor includes an enclosure and a processing device, memory device, and communication interface disposed within the enclosure. The processing device is configured to control the electric motor and collect operating information from the electric motor during operation of the electric motor. The memory device is communicatively coupled to the processing device. The memory device is configured to receive and store the operating information collected during operation of the electric motor. The communication interface is communicatively coupled to the processing device and the memory device, and is configured to enable access to the operating information stored on the memory device by a computing device disposed remotely from the electric motor.Type: GrantFiled: February 1, 2021Date of Patent: October 11, 2022Assignee: REGAL BELOIT AMERICA, INC.Inventors: Brian L. Beifus, Paul Nathanael Selking, Vijay Dayaldas Gurudasani, Michael R. Koller
-
Patent number: 11463032Abstract: An approach for detecting rotor anomalies is disclosed. Vibration data for a vibration sensor(s) and for a transient speed operation is classified into a plurality of rotor speed ranges. A predetermined percentile vibration amplitude is determined for each rotor speed range for the vibration sensor(s). Using historical vibration measurement data obtained from a predetermined number of previous transient speed operations performed by at least the rotor, it is determine whether a vibration measurement obtained during the transient speed operation is indicative of a rotor anomaly by determining whether a trend exists in the predetermined percentile vibration amplitude for at least one of the rotor speed ranges and the vibration sensor(s) over a preset number of previous transient speed operations. A rotor anomaly is indicated where a trend exists.Type: GrantFiled: November 11, 2019Date of Patent: October 4, 2022Assignee: General Electric CompanyInventors: Lucas Christopher Hunt, Kiran Vangari, Robert Pries
-
Patent number: 11462989Abstract: A power converting apparatus and a vehicle including the same according to an embodiment of the present disclosure includes a switching element; and a gate drive unit configured to apply a gate driving signal for driving the switching element to a gate terminal of the switching element, wherein the gate drive unit includes: a current source unit including a source current for sourcing current to the gate terminal in a turn-on section of the switching element, and a sink current for sinking current from the gate terminal in a turn-off section of the switching element; a control current for sinking the current from the gate terminal during a partial section of the turn-on section and the turn-off section of the switching element; and a control current controller configured to control an operation of the control current.Type: GrantFiled: November 19, 2020Date of Patent: October 4, 2022Assignee: LG ELECTRONICS INC.Inventors: Jonggyu Lee, Taejin Kim, Hyosung Park
-
Patent number: 11456690Abstract: A pulse-controlled inverter with a variably controlled switching frequency for generating a sinusoidal alternating current for a motor. A control device is provided to control the switching frequency fswitch of the pulse-controlled inverter as a function of the speed n of the motor.Type: GrantFiled: February 10, 2021Date of Patent: September 27, 2022Assignee: ebm-papst Mulfingen GmbH & Co. KGInventor: Marco Weckert
-
Patent number: 11456691Abstract: The present disclosure provides an inverter control device which estimates back electromotive force of an induction motor, and which uses a torque current and a flux current so as to calculate a slip frequency and compensate for same, thereby enabling the motor to operate at a constant speed. To this end, the present invention may comprise: a command voltage generating unit for outputting, to an inverter, a three phase PWM voltage with respect to a command frequency on the basis of a voltage/frequency operation; and a slip frequency determining unit for determining a slip frequency on the basis of a phase current and a phase voltage of a motor driven by the inverter.Type: GrantFiled: August 7, 2019Date of Patent: September 27, 2022Assignee: LS ELECTRIC CO., LTD.Inventors: Seung-Cheol Choi, Hak-Jun Lee
-
Patent number: 11451179Abstract: Disclosed are a motor control device that can accurately estimate a rotor position based on a neutral point potential even when a load increases, and a brake control device that is driven by the motor control device. The motor control device 3 includes a three-phase synchronous motor 4 including a three-phase winding, an inverter 31 connected to the three-phase winding, a control unit 6 for controlling the inverter based on a rotor position of the three-phase synchronous motor, and a rotational position estimation unit 2 for estimating a rotor position ?d based on a neutral point potential Vn of the three-phase winding. The rotational position estimation unit estimates a rotor position selectively using one or more of a plurality of detected values of the neutral point potential according to a pre-estimated value of the rotor position and a voltage application state to the three-phase winding.Type: GrantFiled: October 10, 2018Date of Patent: September 20, 2022Assignee: Hitachi Astemo, Ltd.Inventors: Takafumi Hara, Toshiyuki Ajima, Shigehisa Aoyagi, Hiroyuki Ota, Kenichiro Matsubara
-
Patent number: 11447236Abstract: An actuator includes an inverter, a stator, a movable part, a controller, an injector, a current detector, and an estimator. The inverter is driven by a power generated by the axial force of an engine, etc. The stator includes an armature coil driven by the inverter. The movable part applies a driving force to at least one of a rudder surface of a tailplane of the airplane, etc. The controller controls the inverter in accordance with a signal from a maneuvering system. The injector injects a high-frequency signal into the coil. The current detector detects a coil current. The estimator estimates a position of the movable part.Type: GrantFiled: April 9, 2020Date of Patent: September 20, 2022Assignee: NABTESCO CORPORATIONInventor: Tsutomu Yasui
-
Patent number: 11451149Abstract: A power converter is connected between a power supply source of a first direct current power and a power supply destination of a second direct current power obtained by performing power conversion on the first direct current power. The power converter includes: a switching element; a reactor; a first diode; a first capacitor; a second diode. The reactor is connected to a first end of the switching element. The first end of the switching element and a first end of the reactor are connected to a first connection point. A cathode of the first diode is connected to a second end of the reactor. The cathode of the first diode and the second end of the reactor are connected to a second connection point. The second diode includes an anode connected to the first connection point and a cathode connected to the power supply destination.Type: GrantFiled: May 29, 2018Date of Patent: September 20, 2022Assignee: Mitsubishi Electric CorporationInventors: Kenji Iwazaki, Koichi Arisawa, Takashi Yamakawa, Takuya Shimomugi, Satoru Ichiki, Ikuro Suga
-
Patent number: 11451172Abstract: An electronically commutated electric motor includes a stator with stator coil(s), a magnetized rotor which rotates relative to the stator, the magnetized rotor having at least two opposite magnet poles which generate an excitation field, a static magnetic field sensor which detects the excitation field and generates a sensor signal having signal edges, a full-wave signal period, and half-wave lengths of an N- and an S-signal level, a motor energizing device which drives the stator coil(s) and generates a revolving stator field when triggered by a trigger signal, a memory unit which saves parameter values, and an evaluation unit which generates the trigger signal via a shift compensation of an asymmetric shift of the signal edges of the sensor signal. The shift compensation is calculated based on a position of a received sensor signal edge, the full-wave signal period, and the half-wave lengths of the sensor signal.Type: GrantFiled: November 9, 2017Date of Patent: September 20, 2022Assignee: PIERBURG PUMP TECHNOLOGY GMBHInventors: Christian Schulz, Ercan Birinci, Timo Kersten, Michael Stepanow, Martin Helmis
-
Patent number: 11431275Abstract: A motor control system comprises: a motor; power sources; electric control units (ECUs) connected with the motor, each of ECUs comprising an inverter connected with a respective power source; and a controller monitoring whether an abnormality is detected in a voltage supplied to ECU(s). When the abnormality is detected in the voltage supplied to non-active ECU, the controller isolates current of active ECU to an inverter of active ECU to prevent high voltage spike caused by uncontrolled current flowing from active ECU to non-active ECU having the abnormality, and after the current of active ECU is isolated, electrically disconnects non-active ECU from active ECU and/or the motor. When the abnormality is detected in the voltage supplied to active ECU, the controller electrically disconnects active ECU from non-active ECU and/or the motor; and after active ECU having the abnormality is disconnected from non-active ECU and/or the motor, activates non-active ECU.Type: GrantFiled: July 5, 2021Date of Patent: August 30, 2022Assignee: MANDO CORPORATIONInventors: Anant Singh, Tomy Sebastian, Ramakrishnan Rajavenkitasubramony
-
Patent number: 11424703Abstract: In a motor control device, a rotational phase detection unit detects a rotational phase of a rotor of a stepping motor, and a driving waveform generation unit generates a driving waveform for driving the stepping motor. An advance angle control unit detects a phase difference (advance angle) between a rotational phase of the rotor and a phase of the driving waveform and controls an amplitude or a period of the driving waveform generated by the driving waveform generation unit to perform advance angle control. The advance angle control unit controls an amplitude of the driving waveform by determining a target advance angle based on a variation (advance angle change rate) of an advance angle with respect to a variation of an amplitude in accordance with a change in the advance angle when the amplitude of the driving waveform is changed.Type: GrantFiled: June 18, 2020Date of Patent: August 23, 2022Assignee: CANON KABUSHIKI KAISHAInventors: Hirofumi Honda, Tomohiro Sugaya
-
Patent number: 11424698Abstract: A motor control device includes: an inverter circuit configured to convert a direct-current voltage into an alternating-current voltage, and to supply the alternating-current voltage to a plurality of motors connected in parallel; current detectors configured to detect motor currents flowing through the respective motors; a relay provided between at least one of the plurality of motors and the inverter circuit; and a controller configured to change the number of motors to be driven. When one of two or more motors under driving is stopped, the controller lowers a current instruction value to the two or more motors under driving. When a monitor current that is the motor current detected by the current detector of the motor connected to the relay is decreased, the controller switches the relay from an on state to an off state.Type: GrantFiled: January 16, 2019Date of Patent: August 23, 2022Assignee: Mitsubishi Electric CorporationInventors: Akihiro Tsumura, Yuichi Shimizu, Yasuhiko Wada, Junji Morimoto
-
Patent number: 11418141Abstract: A motor driver apparatus includes: a converter including a first electrical network configured to convert AC electrical power into DC electrical power, the first electrical network including at least one electronic element that includes a wide bandgap semiconductor material; and an inverter electrically connected to the converter, the inverter including a second electrical network configured to generate an AC motor power signal from the DC electrical power, the second electrical network includes a plurality of electronic elements that include a semiconductor material that is not a wide bandgap semiconductor material.Type: GrantFiled: August 27, 2020Date of Patent: August 16, 2022Assignee: Eaton Intelligent Power LimitedInventors: Adam Krug, Huaqiang Li
-
Patent number: 11418100Abstract: A haptic engine includes a linear resonant actuator having a double-wound driving coil which is used for sensing a back electromotive force (EMF) voltage independently of the coil resistance, thus minimizing the back EMF voltage's sensitivity to temperature.Type: GrantFiled: June 12, 2020Date of Patent: August 16, 2022Assignee: Apple Inc.Inventors: Riccardo Tarelli, Yumeng Liu
-
Patent number: 11404979Abstract: A motor driving circuit includes a first motor driving circuit that controls driving of a first motor is disposed, a second motor driving circuit that controls driving of a second motor is disposed, and a constant current generation circuit that generates a constant current is disposed, and the constant current generation circuit is disposed at a position deviating from between the first motor driving circuit and the second motor driving circuit.Type: GrantFiled: October 29, 2020Date of Patent: August 2, 2022Assignee: SEIKO EPSON CORPORATIONInventors: Haruo Hayashi, Motoaki Nishimura, Makoto Katase, Yusuke Sano
-
Patent number: 11398794Abstract: A system and method for thermal management in a variable frequency drive is provided. Aspects include receiving, by a processor, operational data associated with a variable frequency drive, the operational data including one or more operational parameters for the variable frequency drive, comparing the one or more operational parameters to a threshold, and operating the variable frequency drive to produce a first modulated output based at least in part on the one or more operational parameters being below the threshold.Type: GrantFiled: October 29, 2019Date of Patent: July 26, 2022Assignee: CARRIER CORPORATIONInventors: Ismail Agirman, Timothy M. Remmers
-
Patent number: 11398784Abstract: A motor driving device which can reduce a load burden on a rotating shaft when a magnetic bearing is initially operated. When a rotor and a stator are initially aligned, the motor driving device can apply a greater current to a coil positioned farthest away from the ground among a plurality of coils than to the other coils, so as to reduce a levitation force necessary for initial alignment of the rotor and the stator.Type: GrantFiled: December 18, 2018Date of Patent: July 26, 2022Assignee: LG Electronics Inc.Inventor: Min Gi Kim
-
Patent number: 11394334Abstract: A power control method for calculating a duty command value to be used for a PWM control, generating a PWM signal corresponding to a comparison result between the duty command value and a carrier signal, and applying a PWM voltage to a load by driving an inverter based on the PWM signal. The power control method comprises obtaining a compensation amount according to a phase shift generated in the PWM voltage so as to compensate for the shift, correcting the compensation amount according to a cycle of the carrier signal, and correcting the duty command value depending on whether a strength of the carrier signal is increasing or decreasing using the corrected compensation amount.Type: GrantFiled: February 18, 2019Date of Patent: July 19, 2022Assignee: NISSAN MOTOR CO., LTD.Inventors: Mitsuhiro Shouji, Hiromichi Kawamura, Shun Kitauchi