公开(公告)号：US2640178A

公开(公告)日：1953-05-26

申请号：US20876751

申请日：1951-01-31

申请人： BENNO SCHWARZ

发明人： BENNO SCHWARZ

IPC分类号： H02K27/16 ,  H02K47/28 ,  H02P25/10

CPC分类号： H02K47/28 ,  H02K27/16 ,  H02P25/10

公开(公告)号：US2576084A

公开(公告)日：1951-11-20

申请号：US9075049

申请日：1949-04-30

申请人： DICTAPHONE CORP

发明人： TREVITT JOHN H

IPC分类号： H02P25/10

CPC分类号： H02P25/10

公开(公告)号：US1922724A

公开(公告)日：1933-08-15

申请号：US56287831

申请日：1931-09-15

申请人： WESTINGHOUSE ELECTRIC & MFG CO

发明人： COWIN STUART H ,  HIBBARD LLOYD J

IPC分类号： H02P25/10

CPC分类号： H02P25/10

公开(公告)号：US09780718B2

公开(公告)日：2017-10-03

申请号：US13882203

申请日：2010-11-02

申请人： Dan Christian Barfus ,  Wayne Weaver Conard ,  Alex Lai ,  Rainman Xiao

发明人： Dan Christian Barfus ,  Wayne Weaver Conard ,  Alex Lai ,  Rainman Xiao

IPC分类号： H02P29/02 ,  H02P15/00 ,  H02P29/028 ,  A47J43/08 ,  B01F15/00 ,  B01F7/00 ,  H02P29/032 ,  H02P25/10

CPC分类号： H02P29/028 ,  A47J43/08 ,  B01F7/00325 ,  B01F15/00389 ,  H02P29/032

摘要： A method of controlling a portable appliance includes measuring an input current supplied to a motor of the portable appliance and measuring a rotational speed of a shaft of the motor. The method also includes determining a current limit based on the rotational speed of the shaft using a substantially continuous function which relates a domain of rotational speeds to a range of current limits. The method further includes reducing, when the input current exceeds the current limit, the rotational speed of the shaft incrementally along the substantially continuous function until the input current is approximately equal to the current limit.

公开(公告)号：US20170170774A1

公开(公告)日：2017-06-15

申请号：US15378757

申请日：2016-12-14

申请人： Milwaukee Electric Tool Corporation

发明人： David H. Selfors ,  Brian Trump

IPC分类号： H02P29/032 ,  H02P25/10 ,  H02P6/16 ,  B25F5/00 ,  B24B23/02

CPC分类号： B24B23/028 ,  B23Q11/04 ,  B25F5/00 ,  H02H7/093 ,  H02P29/10

摘要： A power tool includes a motor, a power circuit coupled to the motor, and a speed sensor coupled to the motor. The power circuit provides power to the motor. The speed sensor detects a position of the motor. The power tool also includes an electronic processor coupled to the motor and the speed sensor. The electronic processor is configured to receive an output signal from the speed sensor indicative of a measured speed of the motor at a first time, determine a cumulative value based on the measured speed of the motor, and interrupt power from the power circuit to the motor when the cumulative value exceeds an accumulator threshold.

公开(公告)号：US09590538B2

公开(公告)日：2017-03-07

申请号：US13518799

申请日：2010-12-22

申请人： Hans Hermann Rottmerhusen

发明人： Hans Hermann Rottmerhusen

IPC分类号： H02P3/12 ,  H02P3/00 ,  H02P3/22 ,  H02P25/10 ,  H02P25/14

CPC分类号： H02P3/22 ,  H02P25/10 ,  H02P25/14

摘要： An electrodynamic braking device for a universal motor includes a field winding configured to be fed from a grid during a braking operation, and an armature that is configured to be directly short-circuited. A braking process is performed by means of control electronics. Good braking is achieved with relatively low brush wear. Such an electrodynamic braking device can be used effectively for a power tool.

摘要翻译： 一种用于通用电动机的电动制动装置包括：在制动操作期间被配置为从电网供电的励磁绕组和被配置为直接短路的电枢。 制动过程通过控制电子元件进行。 用较低的刷子磨损实现良好的制动。 这种电动力制动装置可以有效地用于电动工具。

公开(公告)号：US20160036365A1

公开(公告)日：2016-02-04

申请号：US13957966

申请日：2014-08-04

申请人： James Bryant

发明人： James Bryant

IPC分类号： H02P25/10 ,  B60L11/18

CPC分类号： B60L50/51 ,  B60L1/003 ,  B60L3/0061 ,  B60L15/20 ,  B60L50/30 ,  B60L50/62 ,  B60L2210/40 ,  B60L2240/12 ,  B60L2240/36 ,  B60L2240/421 ,  B60L2240/423 ,  B60L2240/441 ,  B60L2240/443 ,  Y02T10/6217 ,  Y02T10/644 ,  Y02T10/645 ,  Y02T10/7005 ,  Y02T10/7027 ,  Y02T10/7033 ,  Y02T10/7241 ,  Y02T10/7275

摘要： The (6) power transformer that transmits power that links to (7) electromagnetic wound with a coil in a magnetic field as an amplifier of electrical amperes in a circuit, which an electromagnetic induction that generates overall power of the magnetomotive force as an alternating current (AC) induction motor. The (10) electromagnetic rotor bar as the magnetic rotating force that connects (9) the slip ring which supplies the magnetic current in an air gap (that interacts with electromagnetic induction) to the rotor bar that connects to (14) the fly wheel, a lever that generates torque. In accord with various petrol engine specifications the electromechanical power system can power passenger vehicles, trucks, buses, tractors, cranes, motorcycles, boats, locomotives, ships and other mechanical systems such as hydraulic engines, which include backhoes, excavators, and bulldozers; also it is the driving force of the rotors of pumping systems and electrical generating systems. It is also the driving force electrical generating system rotors for the alternator to produce electric-thermal power to generate steam or very hot air to drive turbine alternators in power plants, desalination plants, or large ships. In this electric power system using direct current (DC), (19) the battery is a source of power which links to electromagnetic coil in a series circuit that connects to resistors that link to the capacitor and connects to the power transformer that links to the (AC) reluctance motors that is the driving the force for the rotor that combines with a fan which is a movable compressor that generates air flow through a duct tube to the thruster for propulsion systems or propellers, which can be found in aircraft engines.This system also converts petrol-powered emergency power generator systems for home and businesses to direct current (DC) electric power systems such as the Generac II Emergency Power System Generator through the same process as for the portable electric generator in accordance to the specifications. In this electromechanical power system, the AC and DC can be alternatives to all energy sources.

公开(公告)号：US08179072B2

公开(公告)日：2012-05-15

申请号：US12201577

申请日：2008-08-29

申请人： Mickaël Beule ,  Gilles Lebuffe

发明人： Mickaël Beule ,  Gilles Lebuffe

IPC分类号： H02H7/08 ,  H02P3/18 ,  H02P25/10

CPC分类号： A61H3/00 ,  A47J31/42 ,  A47J42/44

摘要： A method for counting the number of revolutions of a burr of a coffee mill driven in rotation by an electric motor. According to the method: at least one electrical parameter Pi of the motor that varies in proportion to the speed of said motor is measured in a regular time interval Ti; the speed Vi in each time interval Ti is calculated from the parameter Pi based on an experimentally obtained relation; and the number of revolutions Ni made by the burr in each time interval Ti is calculated from the speed Vi determined.

摘要翻译： 一种用于计算由电动机旋转驱动的咖啡磨机的毛刺的转数的方法。 根据该方法：以规定的时间间隔Ti测量与所述电动机的速度成比例地变化的电动机的至少一个电参数Pi; 基于实验获得的关系，从参数Pi计算出每个时间间隔Ti中的速度Vi; 并根据确定的速度Vi计算由每个时间间隔Ti中的毛刺产生的转数Ni。

公开(公告)号：US20110148332A1

公开(公告)日：2011-06-23

申请号：US12690083

申请日：2010-01-19

申请人： Yoshikazu KAWANO ,  Nobuhiro TAKANO ,  Eiji NAKAYAMA ,  Kenro ISHIMARU ,  Kazumi TANAKA ,  Masahiro ISONO

发明人： Yoshikazu KAWANO ,  Nobuhiro TAKANO ,  Eiji NAKAYAMA ,  Kenro ISHIMARU ,  Kazumi TANAKA ,  Masahiro ISONO

IPC分类号： H02P25/10

CPC分类号： H02P7/295 ,  B25F5/00

摘要： According to an aspect of the present invention, there is provided a power tool including: a motor; a switching device that switches over, in response to a conduction angle thereof, an AC voltage to be applied to the motor; a rotation speed setting unit that sets a target rotation speed of the motor; a rotation speed detection unit that detects an actual rotation speed of the motor; and a controller that determines the conduction angle by comparing the actual rotation speed with the target rotation speed and that controls the switching device by use of the conduction angle based on a maximum conduction angle, the maximum conduction angle being set in accordance with the target rotation speed.

摘要翻译： 根据本发明的一个方面，提供了一种电动工具，包括：电动机; 开关装置，其响应于其导通角切换要施加到所述电动机的AC电压; 转速设定单元，其设定电动机的目标转速; 转速检测单元，其检测所述电动机的实际转速; 以及控制器，其通过将实际转速与目标转速进行比较来确定导通角，并且通过使用基于最大导通角的导通角来控制开关装置，所述最大导通角根据目标旋转设定 速度。

公开(公告)号：US20090058330A1

公开(公告)日：2009-03-05

申请号：US11847494

申请日：2007-08-30

申请人： Brian Dean Boling ,  Michael Ernest Dickeson

发明人： Brian Dean Boling ,  Michael Ernest Dickeson

IPC分类号： H02P25/10

CPC分类号： G11B19/28

摘要： Motor control circuitry reduces the amount of driving voltage profile data stored in a profile datastore to completely rotate the phased motor. The stored driving voltage profile data defines driving voltages samples applied during a limited portion of the electrical period required to completely rotate the phased motor. For example, in one implementation, only one-sixth of the electrical period is defined and stored in a profile datastore. The driving voltage samples for another three-sixths of the electrical period are derived from this one-sixth profile (e.g., reversing, inverted, reversed and inverted), and the driving voltage samples for another two-sixths of the electrical period are based on saturated levels at the power supply voltage and a neutral voltage (e.g., ground). The described motor control circuitry can also provide improved torque at low power supply levels, particularly when saturated portions of the driving voltage profile exceed sixty degrees.

摘要翻译： 电机控制电路减少存储在配置文件数据存储区中的驱动电压曲线数据的数量，以完全旋转相控电机。 存储的驱动电压分布数据定义了在完全旋转相位电动机所需的电气周期的有限部分期间施加的驱动电压样本。 例如，在一个实现中，只有电气周期的六分之一被定义并存储在配置文件数据存储中。 电时段另外三分之六的驱动电压采样从该六分之一轮廓（例如，反转，反转，颠倒和反转）导出，另外六分之二电周期的驱动电压采样基于 在电源电压和中性电压（例如接地）下的饱和电平。 所描述的电动机控制电路还可以在低电源电平下提供改善的转矩，特别是当驱动电压分布的饱和部分超过六十度时。