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公开(公告)号：US20230288890A1
公开(公告)日：2023-09-14
申请号：US18318167
申请日：2023-05-16
CPC分类号： G05B15/02 , F21V23/0435 , G05B11/28 , H04L12/2809 , H04L12/282 , H05B47/175 , H05B47/19 , G05B2219/2642
摘要： Control-source devices may be associated with control-target devices of a load control system during a configuration procedure, such that the control-target devices are responsive to the associated control-source devices during normal operation. The configuration procedure may be executed using a network device having a visual display for associating the control-source devices and control-target devices. The control-source devices may be associated with the control-target devices on an area-by-area basis using an area configuration procedure. The control-target devices may be configured to flash a controlled lighting load according to a flashing profile during the configuration procedure. The flashing profile may be characterized by at least one abrupt transition between off and on, and at least one gradual transition between off and on, where the abrupt and gradual transitions are repeated on a periodic basis.
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公开(公告)号：US11668250B2
公开(公告)日：2023-06-06
申请号：US16679901
申请日：2019-11-11
发明人： Patrick Manoukian
CPC分类号： F02C9/18 , B64D31/00 , G05B11/28 , F05D2260/606 , F05D2270/52
摘要： Methods and systems for operating a gas turbine engine in a multi-engine aircraft are described. The method comprises operating the gas turbine engine in a standby mode to provide substantially no motive power to the aircraft when another engine of the multi-engine aircraft is operated in an active mode to provide motive power to the aircraft, transitioning the gas turbine engine from the standby mode to the non-standby mode, and applying pulse width modulation to an air switching system of the gas turbine engine while transitioning the gas turbine engine from the standby mode to the non-standby mode.
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公开(公告)号：US11658600B2
公开(公告)日：2023-05-23
申请号：US17593629
申请日：2020-03-23
申请人： MINEBEA MITSUMI Inc.
发明人： Reiji Yamasaki
摘要： A motor controller 100-1 includes an inverter 23, a current detection unit 24, and a current detector 27. The motor controller includes a duty-cycle setting unit 31 that sets a duty cycle of each of a first PWM signal, a second PWM signal, and a third PWM signal, based on a corresponding detected value for a given phase. The motor controller includes a PWM signal generator 32. The PWM signal generator 32 adjusts, upon occurrence of a condition in which a given setting value changes, a time sequence order of timings at which the first PWM signal, the second PWM signal, and the third PWM signal respectively change after a change in the given setting value, to be the same as a time sequence order of timings at which the first PWM signal, the second PWM signal, and the third PWM signal respectively change prior to the change in the given setting value, so that a first energization time period and a second energization time period are ensured within half of one period of the carrier. The first energization time period has an energization width in which the current detector enables detecting of a given phase current for any one of phases. The second energization time period has an energization width in which the current detector enables detecting of a given phase current for any one of the phases.
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公开(公告)号：US11088646B2
公开(公告)日：2021-08-10
申请号：US16781120
申请日：2020-02-04
申请人： MINEBEA MITSUMI Inc.
发明人： Masato Aoki
摘要： A motor driving control device drives each of a first motor and a second motor based on a predetermined condition designation signal, and includes a control unit, a first motor driving unit and a second motor driving unit. The control unit outputs first and second PWM signals to control driving of the first and second motors, respectively. Each of the first and second motor driving units flow a current through the first and second motors based on the first and second PWM signals, respectively. The control unit includes a determination means configured to determine whether the condition designation signal meets a predetermined mode switching condition, and an adjustment means configured to perform overlapping-related adjustment of an on period of the first PWM signal and an on period of the second PWM signal, based on a determination result of the determination means.
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公开(公告)号：US10768244B2
公开(公告)日：2020-09-08
申请号：US16030865
申请日：2018-07-10
申请人： Active-Semi, Inc.
IPC分类号： G01R31/64 , H01H85/02 , H02J9/06 , G01R31/3835 , G01R27/26 , G01R31/392 , H02M1/08 , H02M1/32 , H02M3/156 , H02M3/158 , G01R19/25 , G05B11/28 , G05B15/02 , G05F1/66 , H02H3/08 , H03M1/12 , H03M1/76 , H02M1/00
摘要： A power loss protection integrated circuit includes a storage capacitor terminal (STR), an autonomous capacitor health check circuit, and a capacitor fault terminal (CF). The capacitor health check circuit autonomously performs periodic capacitor check operations. In a check operation, current is sinked from the STR terminal for a predetermined time and in a predetermined way. If during this time the voltage on the STR terminal STR drops below a predetermined voltage, then a digital signal CF is asserted onto the CF terminal. Immediately following each capacitor check, a charging voltage is driven onto the STR terminal to recharge the external capacitors coupled to the STR terminal. In one example, the integrated circuit further includes a current switch circuit (eFuse) and a buck/boost controller. The capacitor health check circuit is only enabled during normal mode operation of the integrated circuit, and the check circuit disables boost operation during capacitor checks.
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公开(公告)号：US10333452B2
公开(公告)日：2019-06-25
申请号：US15722750
申请日：2017-10-02
发明人： Sun Woo Kim , Sae Rom Kim , Sang Hyun Jang
IPC分类号： G05B11/28 , H02P29/032 , H02P3/08 , H02P7/29 , H02P29/024
摘要： The present disclosure provides a control apparatus for sensing overcurrent of a DC motor of a vehicle. The control apparatus may include: a microcomputer configured to convert a pulse width modulation (PWM) signal into a digital signal for controlling the DC motor; a half-bridge driver configured to control switching of the DC motor; a regulator configured to supply power; and a noise removal filter. The microcomputer is configured to measure a voltage at an input of the half-bridge driver, compare a difference between on-voltage and off-voltage during each of PWM period with a predetermined threshold, and stop the DC motor when the difference exceeds the predetermined threshold a predetermined number of times.
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公开(公告)号：US10234025B2
公开(公告)日：2019-03-19
申请号：US15890896
申请日：2018-02-07
摘要： The invention mainly relates to a method for controlling a rotating electrical machine (7) interacting with a motor vehicle gearbox (1), characterized in that, during a phase of synchronization between two speed ratios (R1-Rn) during which the rotating electrical machine (7) is controlled for speed and there is a change of the type of modulation with transition from modulation of the full-wave type (FW) to pulse-width modulation (PWM), said method comprises a control step with the aim of limiting the variations of an output current of an inverter during the phase of change of the type of modulation without compensation of torque variations.
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公开(公告)号：US10216151B2
公开(公告)日：2019-02-26
申请号：US15526440
申请日：2015-06-23
发明人： Koichiro Ueda , Takemasa Arakawa
摘要： A power-consumption-amount estimation apparatus estimating a power consumption amount of an industrial machine including a motor, a machine driven by the motor, and an amplifier driving the motor, includes: an operation-pattern-information obtaining unit; a dynamics-information obtaining unit; a circuit-information obtaining unit obtaining amplifier information and motor information; and a power-consumption-amount calculation unit executing a process of calculating power of each of the motor and the regenerative resistor based on operation-pattern information, dynamics information, amplifier information, motor information, and a bus voltage simulated value and calculating power of the industrial machine based on the calculated power and execute a process of updating the bus voltage based on the calculated power of each of the motor and the regenerative resistor and the calculated power of the industrial machine, over a specified period, and calculating a power consumption amount of the industrial machine by integrating the calculated power of the industrial machine.
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公开(公告)号：US10128783B2
公开(公告)日：2018-11-13
申请号：US15169540
申请日：2016-05-31
IPC分类号： G05B11/28 , H02P6/10 , G06F13/40 , G06F13/42 , H03K17/687 , H03K17/082 , H03K17/18
摘要： A drive circuit includes an internal oscillator and a pre-drive controller coupled to the internal oscillator. The pre-drive controller can have a switch control output configured to be coupled to a switch input. The pre-drive controller can receive switch control data, receive a clock signal, receive a synchronization signal, synchronize the internal oscillator based on the clock signal and the synchronization signal, and generate a pulse modulated switching signal at the switch control output based on the switch control data and the internal oscillator.
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公开(公告)号：US09941823B2
公开(公告)日：2018-04-10
申请号：US15138222
申请日：2016-04-26
发明人： Junya Hisamatsu , Taishi Hiromi , Yusuke Tanaka
摘要： This disclosure discloses a motor control device configured to control a motor. The motor control device includes an inverter part, a gate driving circuit, a PWM generation circuit, at least one gate buffer, and a control part. The inverter part is configured to convert direct current into alternate current in response to a motor drive command. The gate driving circuit is configured to drive the inverter part. The PWM generation circuit is configured to generate a PWM signal applied to the gate driving circuit. The at least one gate buffer is disposed between the gate driving circuit and the PWM generation circuit. The control part is configured to apply a test signal to the gate buffer to determine abnormality of the gate buffer.
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