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1. 发明授权

US11880120B2 Gimbal control method and device 有权
公开(公告)号：US11880120B2
公开(公告)日：2024-01-23
申请号：US17096265
申请日：2020-11-12
申请人： SZ DJI TECHNOLOGY CO., LTD.
发明人： Wenlin Xie , Zihan Chen , Yanchong Zhao
IPC分类号： G03B17/56 , G05D17/02 , H02P6/08
CPC分类号： G03B17/561 , G05D17/02 , H02P6/08 , H02P2205/07
摘要： A gimbal control method includes configuring, while a gimbal is in a power-on state, turning-off motor control parameters according to a mass of a camera device carried by the gimbal. The gimbal includes an electric motor. The turning-off motor control parameters are configured to control the electric motor when the gimbal is powered off or enters a sleep state. The method further includes, in response to the gimbal being powered off or entering the sleep state, controlling a torque of the electric motor to decrease gradually from a starting moment at which the gimbal is powered off or enters the sleep state according to the turning-off motor control parameters.

2. 发明公开

US20230396199A1 POWER TOOL 审中-公开
公开(公告)号：US20230396199A1
公开(公告)日：2023-12-07
申请号：US18455108
申请日：2023-08-24
申请人： Nanjing Chervon Industry Co., Ltd.
发明人： Yanqing Xu , Dezhong Yang , Hongwei Wang
IPC分类号： H02P21/22 , B23B45/02 , B25F5/00 , H02P27/12
CPC分类号： H02P21/22 , B23B45/02 , B25F5/00 , H02P27/12 , H02P2205/07 , H02P2207/05
摘要： A power tool includes a motor, a power supply device, a driver circuit, a parameter acquisition module, and a controller. The motor includes a stator and a rotor. The motor is configured to generate a reluctance torque. The driver circuit is electrically connected to the motor to drive the motor. The parameter acquisition module is configured to acquire a current of the motor, a rotational speed of the motor, and a position of the rotor. The controller is configured to: according to at least one of the current of the motor, the rotational speed of the motor, or the position of the rotor, dynamically adjust a current applied to the stator so that an included angle between a stator flux linkage of the motor and a rotor flux linkage of the motor ranges from 90° to 135°.

3. 发明授权

US11817811B2 Motor controller with power feedback loop 有权
公开(公告)号：US11817811B2
公开(公告)日：2023-11-14
申请号：US16299293
申请日：2019-03-12
申请人： Allegro MicroSystems, LLC
发明人： Yisong Lu
IPC分类号： H02P6/15 , H02P21/24 , H02P7/29
CPC分类号： H02P7/2913 , H02P2205/03 , H02P2205/07
摘要： A motor control system includes a motor; a motor and a motor control circuit coupled to the motor to provide power to the motor. The motor control circuit includes a power feedback loop having a power reference circuit to provide a reference power level and a power control circuit configured to provide a constant power level to the motor so that the motor operates with a substantially constant power output. The constant power level is proportional to the reference power level. Thus, the motor also provides substantially constant torque when the motor is at a constant speed.

4. 发明申请

US20190131895A1 SYSTEMS AND METHODS FOR CONTROLLING SINUSOIDALLY DRIVEN MOTORS 审中-公开
公开(公告)号：US20190131895A1
公开(公告)日：2019-05-02
申请号：US15800771
申请日：2017-11-01
申请人： Crestron Electronics, Inc.
发明人： Luis J. Rivera , Michael Campagna , Benjamin Slivka
IPC分类号： H02P6/15 , H02P6/21 , H02P6/16 , E06B9/68 , E06B9/72
CPC分类号： H02P6/153 , E06B9/68 , E06B9/72 , E06B2009/6809 , E06B2009/6845 , H02P6/16 , H02P6/21 , H02P2205/07 , H02P2209/11
摘要： An angle shift compensation system and method for controlling a sinusoidally driven motor to achieve efficient motion and reduced noise. The motor controller uses the angle shift compensation method to monitor the angle shift between a sinusoidal motor control signal configured to drive the motor and a feedback signal received from at least one position detector indicating the position of the motor rotor with respect to the motor stator. In response, the motor controller proportionally adjusts the amplitude of the motor control signal based on the monitored angle shift to maintain the angle shift substantially equal to an angle shift threshold.

5. 发明申请

US20190131894A1 SYSTEMS AND METHODS FOR CONTROLLING SINUSOIDALLY DRIVEN MOTORS 审中-公开
公开(公告)号：US20190131894A1
公开(公告)日：2019-05-02
申请号：US15800675
申请日：2017-11-01
申请人： Crestron Electronics, Inc.
发明人： Luis J. Rivera , Michael Campagna , Benjamin Slivka
IPC分类号： H02P6/15 , H02P6/16 , H02P6/21
CPC分类号： H02P6/153 , E06B9/68 , E06B9/72 , E06B2009/6809 , E06B2009/6845 , H02P6/16 , H02P6/21 , H02P2205/07 , H02P2209/11
摘要： An angle shift compensation system and method for controlling a sinusoidally driven motor to achieve efficient motion and reduced noise. The motor controller uses the angle shift compensation method to monitor the angle shift between a sinusoidal motor control signal configured to drive the motor and a feedback signal received from at least one position detector indicating the position of the motor rotor with respect to the motor stator. In response, the motor controller proportionally adjusts the amplitude of the motor control signal based on the monitored angle shift to maintain the angle shift substantially equal to an angle shift threshold.

6. 发明授权

US10020767B2 Linear motor device and control method 有权
公开(公告)号：US10020767B2
公开(公告)日：2018-07-10
申请号：US14342726
申请日：2012-09-06
申请人： Shuhei Yamanaka , Yuki Nomura
发明人： Shuhei Yamanaka , Yuki Nomura
IPC分类号： B23Q17/00 , H02K7/06 , H02P25/06 , H05K13/04 , H02K41/03
CPC分类号： H02P25/06 , H02K41/031 , H02P2205/07 , H05K13/0406
摘要： A linear motor device includes a linear motor and a controller that applies pressure to a pressurizing target by moving a needle provided with the linear motor. The controller includes: a speed-change position-setting unit that calculates a deceleration start position, which is a position where a movement speed of the needle starts to be reduced from a first speed to a second speed when the pressurizing target start to be pressurized, based on a distance required to reduce the movement speed of the needle from the first speed to the second speed which is lower than the first speed and at which pressure applied to the pressurizing target when the needle comes into contact with the pressurizing target is equal to or lower than a predetermined pressure; and a position determination unit that drives the needle of the linear motor at the first speed and at the second speed.

7. 发明申请

US20180024572A1 MOTOR CONTROLLER AND INDUSTRIAL MACHINE 审中-公开
公开(公告)号：US20180024572A1
公开(公告)日：2018-01-25
申请号：US15548191
申请日：2016-02-02
申请人： Mitsubishi Electric Corporation
发明人： Takashi KAI , Hiroyuki SEKIGUCHI , Hidetoshi IKEDA , Shigeo AMIGASAYA
IPC分类号： G05D3/12 , H02P29/40
CPC分类号： G05D3/12 , G05B19/00 , H02P23/20 , H02P29/40 , H02P2205/07
摘要： A motor controller includes: an error suppression compensation unit that outputs an error suppression signal for driving the motor such that a difference between the position command signal and a signal based on the motor position signal equals zero; an acceleration extraction unit that outputs an acceleration component of a natural frequency of a stand from a stand vibration signal; an acceleration compensation unit that outputs a proportional compensation signal obtained by multiplying the stand acceleration signal by a proportional gain; a machine end correction unit that outputs a machine end correction signal, and decreases an amplitude of vibration at the machine end relative position; and an addition unit that outputs a signal obtained by adding the machine end correction signal to the error suppression signal.

8. 发明申请

US20170369061A1 IN-VEHICLE ELECTRIC MOTOR CONTROL DEVICE 审中-公开
公开(公告)号：US20170369061A1
公开(公告)日：2017-12-28
申请号：US15541259
申请日：2016-01-21
申请人： DENSO CORPORATION
发明人： Tomoyuki SUMI , Koji SAKAI , Yuuji KAMIYA , Hideyuki MORITA
IPC分类号： B60W30/14 , H02P29/00 , H02P27/06
CPC分类号： B60W30/146 , B60L1/00 , B60L15/20 , B60L2240/421 , B60L2240/429 , B60L2270/142 , F04B49/06 , F04B49/065 , H02P23/14 , H02P27/06 , H02P29/00 , H02P2205/07
摘要： A CPU drives an inverter based on a command rotation speed that is inputted from a higher level ECU at a predetermined update interval. The CPU acquires an actual rotation speed of the electric motor, and calculates an accelerated rate and a decelerated rate based on the update interval and a difference between the actual rotation speed and the command rotation speed such that the actual rotation speed changes without reaching the command rotation speed and becoming constant before an end of the update interval. The CPU drives the inverter such that the electric motor rotates at the calculated rate.

9. 发明授权

US08970153B2 Apparatus and method for controlling speed of motor 有权
标题翻译：用于控制电机速度的装置和方法
公开(公告)号：US08970153B2
公开(公告)日：2015-03-03
申请号：US13802501
申请日：2013-03-13
申请人： Samsung Electro-Mechanics Co. Ltd.
发明人： Bon Young Gu
IPC分类号： G05B5/00 , H02P29/00
CPC分类号： H02P29/0005 , H02P29/10 , H02P2205/07
摘要： An apparatus for controlling a speed of a motor, includes: a first duty change detection unit detecting a change in duty of a PWM signal supplied from the outside; a speed conversion unit converting a speed indication (command) having the PWM signal into an actual speed value (RPM value) based on the change in duty detected by the first duty change detection unit; a speed control unit generating a new speed indication value to be applied to a motor and determining the duty value of PWM signal based on the new speed indication value; a second duty change detection unit detecting the change in the duty value of PWM signal determined by the speed control unit; and a PWM generation unit generating the PWM signal actually applied to the motor based on the change in the duty value detected by the second duty change detection unit.
摘要翻译：一种用于控制电动机速度的装置，包括：第一占空比变化检测单元，检测从外部提供的PWM信号的占空比变化; 速度转换单元，其基于由所述第一占空比变化检测单元检测到的占空比变化将具有所述PWM信号的速度指示（指令）转换为实际速度值（RPM值）; 速度控制单元，生成要施加到电动机的新的速度指示值，并且基于新的速度指示值确定PWM信号的占空比值; 第二占空比变化检测单元，检测由速度控制单元确定的PWM信号的占空比值的变化; 以及PWM生成单元，其基于由所述第二占空比变化检测单元检测出的占空比值的变化，生成实际施加到所述电动机的PWM信号。

10. 发明授权

US08866423B2 PMSM field weakening for appliance motors 有权
标题翻译：家用电器的PMSM场弱化
公开(公告)号：US08866423B2
公开(公告)日：2014-10-21
申请号：US13590704
申请日：2012-08-21
申请人： Richard D. Suel, II , Abhijeet A. Bhandwale
发明人： Richard D. Suel, II , Abhijeet A. Bhandwale
IPC分类号： H02P6/08
CPC分类号： H02P23/14 , H02P23/009 , H02P2205/07
摘要： An electric motor in an appliance and a method of controlling the motor to achieve speeds greater than a base speed of the motor is provided. To achieve speeds above the base speed of the motor, field weakening can be implemented by applying a field weakening angle to a phase advance angle between a desired stator flux and a rotor flux. The field weakening angle can be based on the current speed of the motor. The field weakening angle can be a fixed angle and can be determined by comparing the current speed of the motor with a predetermined threshold. In addition, the magnitude of the electrical signal applied to the motor can be adjusted during field weakening based on a desired speed of the motor where the electrical signal can be a voltage.
摘要翻译：提供了一种电器中的电动机以及控制电动机以实现大于电动机的基准速度的速度的方法。为了实现高于电动机的基准速度的速度，可以通过对期望的定子磁通和转子磁通之间的相位提前角施加磁场弱化角来实现磁场弱化。磁场弱化角度可以基于电机的当前速度。磁场弱化角度可以是固定角度，可以通过将电动机的当前速度与预定阈值进行比较来确定。此外，施加到电动机的电信号的大小可以在电场弱化期间根据电动机的期望速度进行调整，其中电信号可以是电压。

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