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公开(公告)号：US11469701B2
公开(公告)日：2022-10-11
申请号：US17182607
申请日：2021-02-23
申请人： ebm-papst Inc.
发明人： Hogan Eng
摘要： 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.
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公开(公告)号：US20220263441A1
公开(公告)日：2022-08-18
申请号：US17669329
申请日：2022-02-10
摘要： A motor controller includes a temperature sensor configured to detect a temperature of a motor. An intermittent operation circuit allows the motor to intermittently operate at a rotation speed up to a phase before the motor reaches a rated rotation speed when it is detected that the motor temperature is at a low temperature range. The intermittent operation circuit includes a position fixing circuit configured to allow a constant electric current to flow through stator coils and to fix the motor in a stopped state. The intermittent operation circuit further includes a forced commutation circuit that allows the motor to rotate at a rotation speed up to the start-up rotation. The position fixing circuit allows the constant electric current to have a greater value as the temperature detected by the temperature sensor is lower, and allows the position fixing circuit and the forced commutation circuit to operate alternately.
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公开(公告)号：US20220202227A1
公开(公告)日：2022-06-30
申请号：US17694465
申请日：2022-03-14
申请人： RYSE INC.
摘要： A motor driven system for raising and lowering a window covering executes motor ramp trajectory speed control. The motor ramp trajectory limits acceleration of an external motor from the idle (stationary) state to full operating speed, and limits deceleration of the motor from full operating speed back to the idle state. This function reduces stresses on a continuous cord loop drive mechanism. A control system manages solar heating effects in response to sunlight entrance conditions such as system sensor outputs, external weather forecasts, and other data sources. The system automatically opens or close the window covering to increase or decrease admitted sunlight under appropriate conditions. The input interface of the control system includes a visual display and input axis, which are aligned vertically if the window covering mechanism raises and lowers the window covering, and are aligned horizontally if the window covering mechanism laterally opens and closes the window covering.
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公开(公告)号：US11272802B2
公开(公告)日：2022-03-15
申请号：US17121244
申请日：2020-12-14
申请人： RYSE INC.
IPC分类号： A47H5/032 , E06B9/322 , E06B9/24 , H02P1/16 , E06B9/74 , E06B9/70 , E06B9/36 , E06B9/326 , E06B9/68 , F16H19/06 , E06B9/262
摘要： A motor driven system for raising and lowering a window covering executes motor ramp trajectory speed control. The motor ramp trajectory limits acceleration of an external motor from the idle (stationary) state to full operating speed, and limits deceleration of the motor from full operating speed back to the idle state. This function reduces stresses on a continuous cord loop drive mechanism. A control system manages solar heating effects in response to sunlight entrance conditions such as system sensor outputs, external weather forecasts, and other data sources. The system automatically opens or close the window covering to increase or decrease admitted sunlight under appropriate conditions. The input interface of the control system includes a visual display and input axis, which are aligned vertically if the window covering mechanism raises and lowers the window covering, and are aligned horizontally if the window covering mechanism laterally opens and closes the window covering.
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公开(公告)号：US20210152104A1
公开(公告)日：2021-05-20
申请号：US16623905
申请日：2017-06-21
IPC分类号： H02P1/16 , H02P25/022 , H02P27/06 , H02M5/45 , H02P23/14
摘要： A thyristor starter accelerates a synchronous machine from a stop state to a predetermined rotation speed by sequentially performing a first mode of performing commutation of an inverter by intermittently setting DC output current of a converter to zero and a second mode of performing commutation of the inverter by induced voltage of the synchronous machine. In the thyristor starter, during a first time period from start of performance of the second mode to arrival of the induced voltage of the synchronous machine at a first voltage value, a phase control angle of the inverter is changed such that a value thereof becomes larger as a rotation speed of the synchronous machine becomes higher.
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公开(公告)号：US10778000B2
公开(公告)日：2020-09-15
申请号：US16072890
申请日：2017-01-27
发明人： Wolfgang Meid
摘要： An electronic motor starter has a main switch configured as a semiconductor, forming a semiconductor contactor and having at least one semiconductor switch for switching a phase of a supply of a motor winding, a first connection of each semiconductor switch being connected to a corresponding first main current contact of the motor starter; an auxiliary switch configured as a semiconductor switch and connected between at least one pair of auxiliary contacts of the motor starter; a transducer for measuring currents connected between a second connection of each main semiconductor switch and a corresponding second main power contact of the motor starter; and a controller foe the main and auxiliary switches being powered via motor starter control contacts, for being fed transducer measurement signals, and being configured to control the main and/or auxiliary switch according to the supply via the control contacts and/or according to the transducer measurement signals.
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公开(公告)号：US20200235691A1
公开(公告)日：2020-07-23
申请号：US16612474
申请日：2017-07-26
发明人： Keiichiro SHIZU , Yosuke SHINOMOTO
摘要： A motor drive device capable of switching the connection configuration of the stator windings of a motor includes three relays each including a first contact, a second contact, and a contact plate, where the contact plate has one terminal coupled to a stator winding of one phase among the stator windings and the contact plate has another terminal to be connected to the first contact or to the second contact; and a control unit to control the three relays to cause all the three relays to have a same connection state in a case in which not all the three relays have a same connection state with respect to connections between the another terminal of the contact plate and the first contact and the second contact.
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公开(公告)号：US10701813B2
公开(公告)日：2020-06-30
申请号：US15499765
申请日：2017-04-27
申请人： LG Display Co., Ltd.
发明人： Jeonghun Kim , Bongchul Kim
IPC分类号： H05K5/00 , G06F1/16 , H04N5/64 , H02K11/21 , H02K11/33 , H01L51/52 , H02K7/14 , H02P1/16 , H02P3/06 , G09F9/30
摘要： The present disclosure provides a rollable display device including a display panel configured to display an image, a panel roller having a mechanical structure that enables rolling up the display panel around an outer circumferential surface of the panel roller, and a roller driving unit configured to control a motor so that the display panel rolls around the outer circumferential surface of the panel roller or unrolls therefrom, wherein the roller driving unit and the motor are disposed in the panel roller.
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公开(公告)号：US20190305697A1
公开(公告)日：2019-10-03
申请号：US16467279
申请日：2017-12-11
申请人： Sevcon Limited
发明人： Howard Slater
IPC分类号： H02P1/16
摘要： A method of controlling a switched reluctance motor is disclosed herein. The motor comprises a stator carrying a plurality of phase windings and a rotor. The method comprises activating the phase windings in a sequence selected to apply torque to the rotor, wherein during a cycle of rotation of the rotor the phase windings switch between an active state in which current in the phase winding applies torque to the rotor and an inactive state; applying a voltage to a selected phase winding whilst the selected phase winding is in the inactive state to provide a flux in the selected phase winding; determining the current in the selected phase winding; determining the rotor angle based on the current and the flux; and controlling said activating based on the rotor angle.
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公开(公告)号：US20190048867A1
公开(公告)日：2019-02-14
申请号：US16056576
申请日：2018-08-07
发明人： Masamichi Harada , Kyohei Sakagami
摘要： In a control unit of a hydraulic control device, when supply is switched to supply of first oil from a first pump to a continuously variable transmission mechanism through a check valve, a motor controller decreases a rotation number of a motor or stops the motor. The motor controller starts the motor only in a circumstance where an influence of an overshoot on a pressure (line pressure, pulley pressure) of oil that is supplied to the continuously variable transmission mechanism is small.
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