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1.发明授权公开(公告)号：US11808782B2
公开(公告)日：2023-11-07
申请号：US17988496
申请日：2022-11-16
发明人： Jinku Hu
摘要： Driving an electromotor and a brushed electromotor in particular results in ripples in the supply current. The amount of pulses is proportional to the amount of revolutions of the rotor of the electromotor. With a flawless motor, the amount of pulses is the same with each revolution. Flaws of the electromotor, in brushes, rotor, windings and/or other components, results in fluctuations of pulses in the supply current per revolution of the rotor. By comparing an expected amount of pulses to counted pulses and using various physical parameters of the electromotor, various methods may be employed to correct a counted amount of pulses or otherwise provide an appropriate value representing displacement of the rotor of the electromotor. The time between counted pulses may also be used for determining slip of a slip coupling comprised by a drive train to which the electromotor may be coupled.
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2.发明申请公开(公告)号：US20230073229A1
公开(公告)日：2023-03-09
申请号：US17988496
申请日：2022-11-16
发明人： Jinku HU
摘要： Driving an electromotor and a brushed electromotor in particular results in ripples in the supply current. The amount of pulses is proportional to the amount of revolutions of the rotor of the electromotor. With a flawless motor, the amount of pulses is the same with each revolution. Flaws of the electromotor, in brushes, rotor, windings and/or other components, results in fluctuations of pulses in the supply current per revolution of the rotor. By comparing an expected amount of pulses to counted pulses and using various physical parameters of the electromotor, various methods may be employed to correct a counted amount of pulses or otherwise provide an appropriate value representing displacement of the rotor of the electromotor. The time between counted pulses may also be used for determining slip of a slip coupling comprised by a drive train to which the electromotor may be coupled.
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公开(公告)号：US20220206548A1
公开(公告)日：2022-06-30
申请号：US17599828
申请日：2019-07-24
发明人： Hsiang Chuan Sung , Chien Hao Chen , Fu-Yi Chen , Yi-Hsuan Huang , Chi-feng Chen
摘要： An example non-transitory machine-readable storage medium includes instructions to determine whether a cooling fan is controlled by pulse wave modulation (PWM) or is voltage-controlled. When executed, the instructions cause a processor of a computing device to transmit first and second PWM test signals at different PWM duties to a fan connector connected to the cooling fan, receive a first and second fan speed signals in response, and determine, when the first fan speed signal is not equal to the second fan speed signal, that the cooling fan is a PWM-controlled fan. The instructions further cause the processor to transmit first and second voltage test signals at different voltages to the fan connector, receive a third fan and fourth speed signal in response, and determine, when the third fan speed signal is not equal to the fourth fan speed signal, that the cooling fan is a voltage-controlled fan.
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公开(公告)号：US11091226B2
公开(公告)日：2021-08-17
申请号：US17064090
申请日：2020-10-06
申请人： Shimano Inc.
发明人： Yasuhiro Tsuchizawa , Hiroshi Matsuda , Kazuhiro Fujii , Satoshi Shahana , Hiroyuki Miyoshi , Etsuyoshi Watarai
IPC分类号： B62M25/08 , B62M6/50 , B62M9/132 , F16H61/66 , B62M6/55 , F16H61/662 , B62M6/45 , B62M9/122 , G01P3/489
摘要： A bicycle controller includes an electronic control unit that controls a transmission device. The transmission device is configured to change a ratio of a rotational speed of a wheel of a bicycle to a rotational speed of a crank of the bicycle, and a motor. The motor transmits torque to an upstream side of the transmission device in a transmission path of manual driving force that is input to the crank. The electronic control unit is configured to switch between a first mode that drives the motor in accordance with the manual driving force and a second mode that allows the motor to be driven to assist walking of the bicycle. The electronic control unit is configured to control a rotational speed of the motor in accordance with the ratio in the second mode.
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公开(公告)号：US20210148946A1
公开(公告)日：2021-05-20
申请号：US16622545
申请日：2018-06-13
摘要： A method for measuring rotation speed of an aircraft engine shaft includes: acquisition of an alternating rotation speed detection signal across terminals of a phonic wheel sensor, conversion of the alternating signal into a square signal; comparison of a plurality of previously-stored square signal period samples to lower and upper period limits, to determine valid samples of a value included between the terminals; if the number of valid samples is greater than a first threshold, determination on the basis of the valid samples of a desired period of the square signal; and at least on the condition that the number of valid samples is less than the first threshold, computation of a plurality of sums of samples, and computation of the average of a set comprising a number of valid period samples and a number of sums from among the plurality of sums of at least two samples.
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公开(公告)号：US20210031882A1
公开(公告)日：2021-02-04
申请号：US17064090
申请日：2020-10-06
申请人： Shimano Inc.
发明人： Yasuhiro TSUCHIZAWA , Hiroshi MATSUDA , Kazuhiro FUJII , Satoshi SHAHANA , Hiroyuki MIYOSHI , Etsuyoshi WATARAI
摘要： A bicycle controller includes an electronic control unit that controls a transmission device. The transmission device is configured to change a ratio of a rotational speed of a wheel of a bicycle to a rotational speed of a crank of the bicycle, and a motor. The motor transmits torque to an upstream side of the transmission device in a transmission path of manual driving force that is input to the crank. The electronic control unit is configured to switch between a first mode that drives the motor in accordance with the manual driving force and a second mode that allows the motor to be driven to assist walking of the bicycle. The electronic control unit is configured to control a rotational speed of the motor in accordance with the ratio in the second mode.
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7.发明授权公开(公告)号：US10794927B2
公开(公告)日：2020-10-06
申请号：US15745501
申请日：2016-05-24
申请人： Robert Bosch GmbH
发明人： Bernd Tepass , Wolfgang Welsch , Oliver Hahn
摘要： The disclosure relates to a method for operating a rotational speed sensor of a motor vehicle with a signal encoder ring having a plurality of magnet elements arranged uniformly over its circumference with alternating orientation, and with a signal receiver having at least two sensor elements arranged uniformly apart from one another for sensing magnetic fields of the magnets. Information bits are generated based on magnetic field strengths detected by the sensor elements and made available as a rotational speed information signal. At a low rotational speed, an additional rotational speed information signal is generated and added to the rotational speed information signal. The additional signal comprises additional rotational speed pulses inserted between two normal rotational speed pulses. As a result, a plurality of rotational speed pulses are available per period of the encoder ring and a higher resolution of determination of the speed becomes possible.
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公开(公告)号：US20200217871A1
公开(公告)日：2020-07-09
申请号：US16732896
申请日：2020-01-02
申请人： VIETTEL GROUP
发明人： LUU PHONG MAC , VAN TAM NGUYEN , DUC BANG DUONG , VAN TIEN PHAM
摘要： The Coaxial Angular Velocity Sensor System is an electronic sensor, which processes and supplies the output signal of the inertial angular velocity with high accuracy and great reliability. The device consists of the main components: angular velocity sensor, analog-digital converter, microcontroller, temperature sensor, power source, mechanical anti-noise-proof chassis. The device's microprocessor comes with a signal processing algorithm that helps increase the accuracy of the device's output. Because of its compact size, high precision, and low cost, the device is used in high precision devices such as UAV cameras, or in life applications such as self-balancing vehicles.
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公开(公告)号：US20200081074A1
公开(公告)日：2020-03-12
申请号：US16564162
申请日：2019-09-09
发明人： Simone Fontanesi , Patricia Lorber , Tobias Werth
摘要： Apparatuses and methods for sending and receiving rotation speed information and corresponding computer programs and electronically readable data carriers are provided. A current interface is configured to transmit pulse sequences coding a number of bits. In a first bit group of the number of bits, it is flagged whether the pulse sequence has been sent for a zero crossing in a magnetic field. Information modulated onto a second bit group of the number of bits is selected on the basis of the first bit group.
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公开(公告)号：US10377360B1
公开(公告)日：2019-08-13
申请号：US16055554
申请日：2018-08-06
申请人： NXP USA, Inc.
摘要： An apparatus and method for resistive short circuit immunity for wheel speed sensor interface on a braking system. In one embodiment the apparatus includes a first circuit for generating a first periodic signal based on first current transmitted to a wheel speed sensor and a second circuit for generating a second periodic signal based on second current, some or all of which is received from the wheel speed sensor. A circuit is provided for selecting the first periodic signal for output if a magnitude of the second current is greater than a magnitude of the first current, or the second periodic signal for output if a magnitude of the second current is not greater than the magnitude of the first current. The selected first or second periodic signal contains information relating to a speed of a wheel that is associated with the wheel speed sensor.
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