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1. 发明申请

US20080079377A1 Motor drive control with a single current sensor using space vector technique 有权
标题翻译：使用空间矢量技术的单电流传感器的电机驱动控制
公开(公告)号：US20080079377A1
公开(公告)日：2008-04-03
申请号：US11983196
申请日：2007-11-07
申请人： Connel Williams , Jeffrey Coles , Adrian Szabo , Christopher Dixon , Jiang Li , Abbas Fardoun
发明人： Connel Williams , Jeffrey Coles , Adrian Szabo , Christopher Dixon , Jiang Li , Abbas Fardoun
IPC分类号： H02P6/18
CPC分类号： H02M7/53875 , H02M7/5387 , H02M7/53873 , H02M7/5395 , H02M2001/0009 , H02M2007/53876 , H02P23/0004
摘要： A drive system for a three phase brushless AC motor is arranged to optimize the transistor switching pattern to improve power output whilst allowing current measurement in all of the phases using a single sensor. This is achieved by defining voltage demand vectors x where more than two states are required to meet a minimum state time requirement determined by the single sensor method, and calculating three or more state vectors which produce the demanded vector x whilst still allowing single current sensing. Various methods of optimising the PWM pattern so as to give maximum output whilst using single current sensing are also disclosed.
摘要翻译：布置用于三相无刷AC电动机的驱动系统以优化晶体管切换模式以改善功率输出，同时允许使用单个传感器在所有相中的电流测量。这通过定义电压需求向量x来实现，其中需要多于两个状态以满足由单个传感器方法确定的最小状态时间要求，以及计算产生所需向量x的三个或更多个状态向量，同时仍然允许单个电流感测。还公开了优化PWM模式以便在使用单电流感测时给出最大输出的各种方法。

2. 发明申请

US20050226607A1 Motor drive control with a single current sensor using space vector technique 有权
标题翻译：使用空间矢量技术的单电流传感器的电机驱动控制
公开(公告)号：US20050226607A1
公开(公告)日：2005-10-13
申请号：US11006460
申请日：2004-12-07
申请人： Connel Williams , Jeffrey Coles , Adrian Szabo , Christopher Dixon , Jiang Li , Abbas Fardoun
发明人： Connel Williams , Jeffrey Coles , Adrian Szabo , Christopher Dixon , Jiang Li , Abbas Fardoun
IPC分类号： H02M7/5387 , H02P6/08 , H02P21/14 , H02P27/06 , H02P7/06
CPC分类号： H02M7/53875 , H02M7/5387 , H02M7/53873 , H02M7/5395 , H02M2001/0009 , H02M2007/53876 , H02P23/0004
摘要： A drive system for a three phase brushless AC motor that is operative to optimize a transistor switching pattern to improve power output while allowing current measurement in all of the phases using a single sensor. This is achieved by defining a voltage demand vector where more than two states are required to meet a minimum state time requirement determined by the single sensor and calculating three or more state vectors that produce the demand vector while still allowing single current sensing.
摘要翻译：用于三相无刷交流电动机的驱动系统，其可操作以优化晶体管开关模式以改善功率输出，同时使用单个传感器允许所有相中的电流测量。这通过定义电压需求向量来实现，其中需要多于两个状态以满足由单个传感器确定的最小状态时间要求，并且计算产生需求矢量的三个或更多个状态向量，同时仍然允许单个电流感测。

3. 发明申请

US20050269982A1 MOTOR DRIVE CONTROL 有权
标题翻译：电机驱动控制
公开(公告)号：US20050269982A1
公开(公告)日：2005-12-08
申请号：US11071534
申请日：2005-03-03
申请人： Jeffrey Coles , Connel Williams
发明人： Jeffrey Coles , Connel Williams
IPC分类号： H02P6/16 , H02P6/18 , H02P7/06
CPC分类号： H02P6/185
摘要： A drive system for a three phase brushless motor uses an algorithm for position sensing which measures the inductance in the motor phases and determines the position from the measured inductances. In order to reduce acoustic noise, the inductances are measured during test periods Tsd, which are conducting states added to the PWM pattern in each PWM period. The test periods have net voltage of zero and therefore do not affect the output of the motor, but are sufficiently long to allow inductance measuring as well as the use of a single current sensor for current sensing.
摘要翻译：用于三相无刷电动机的驱动系统使用用于位置感测的算法，其测量电动机相位中的电感并且从测量的电感确定位置。为了降低声学噪声，在每个PWM周期中加到PWM模式的导通状态的测试周期T s s测量电感。测试周期的净电压为零，因此不影响电机的输出，但足够长以允许电感测量以及使用单个电流传感器进行电流检测。

4. 发明申请

US20070290640A1 Motor drive control 有权
标题翻译：电机驱动控制
公开(公告)号：US20070290640A1
公开(公告)日：2007-12-20
申请号：US11784505
申请日：2007-04-06
申请人： Connel Williams , Jiang Li
发明人： Connel Williams , Jiang Li
IPC分类号： H02P1/18
CPC分类号： H02P6/00 , H02M7/5387 , H02M2001/0009 , H02P6/28
摘要： A drive system for a multi-phase brushless motor comprises a single current sensor drive circuit, including switch means 16, switchable between a plurality of states. A controller is arranged to provide pulse width modulated drive signals to control the switch means 16 so as to control the time that the drive circuit switches between said states in each of a series of pulse width modulation periods, and to: determine a demanded voltage parameter set, identify PWM periods during which the demanded voltage parameter set is such that neither two nominal corresponding state times, nor a higher number of equivalent state times producing the same net voltage, in a single PWM period, would allow a predetermined minimum time to be spent in a predetermined number of active states sufficient for current sensing. For such PWM periods, modified state times are calculated that do allow sufficient time to be spent in a sufficient number of active states for the current in each of the phases to be determined by means of the current sensor 24.
摘要翻译：用于多相无刷电动机的驱动系统包括单个电流传感器驱动电路，包括可在多个状态之间切换的开关装置16。控制器被布置成提供脉冲宽度调制的驱动信号以控制开关装置16，以便控制驱动电路在一系列脉冲宽度调制周期中的每一个中在所述状态之间切换的时间，并且：确定所需的电压参数设置，识别所需电压参数组的PWM周期，使得在单个PWM周期内两个标称对应状态时间和产生相同净电压的较高数量的等效状态时间都不会使预定的最小时间成为花费在足以进行电流感测的预定数量的活动状态。对于这样的PWM周期，计算修改的状态时间，其允许足够的时间花费在用于通过电流传感器24确定的每个相位中的电流的足够数量的有效状态。

5. 发明授权

US07015664B2 Motor drive control 有权
标题翻译：电机驱动控制
公开(公告)号：US07015664B2
公开(公告)日：2006-03-21
申请号：US11071534
申请日：2005-03-03
申请人： Jeffrey Ronald Coles , Connel Williams
发明人： Jeffrey Ronald Coles , Connel Williams
IPC分类号： H02P3/18
CPC分类号： H02P6/185
摘要： A drive system for a three phase brushless motor uses an algorithm for position sensing which measures the inductance in the motor phases and determines the position from the measured inductances. In order to reduce acoustic noise, the inductances are measured during test periods Tsd, which are conducting states added to the PWM pattern in each PWM period. The test periods have net voltage of zero and therefore do not affect the output of the motor, but are sufficiently long to allow inductance measuring as well as the use of a single current sensor for current sensing.
摘要翻译：用于三相无刷电动机的驱动系统使用用于位置感测的算法，其测量电动机相位中的电感并且从测量的电感确定位置。为了降低声学噪声，在每个PWM周期中加到PWM模式的导通状态的测试周期T s s测量电感。测试周期的净电压为零，因此不影响电机的输出，但足够长以允许电感测量以及使用单个电流传感器进行电流检测。

6. 发明授权

US06958599B2 Angular velocity sensor 有权
标题翻译：角速度传感器
公开(公告)号：US06958599B2
公开(公告)日：2005-10-25
申请号：US10863005
申请日：2004-06-08
申请人： Peter Geoffrey Scotson , Christopher David Dixon , Connel Williams
发明人： Peter Geoffrey Scotson , Christopher David Dixon , Connel Williams
IPC分类号： G01D5/244 , G01D18/00 , G01P3/487 , G01P3/489 , G01P21/02 , H02P6/16 , G01B7/30
CPC分类号： G01D5/24452 , G01D5/2449 , G01D18/008 , G01P3/487 , G01P3/489 , G01P21/02
摘要： An angular velocity sensor for a rotor (2) and method of determining angular velocity in which the position at which event generation means (4) pass sensing means (5) is determined using information from the times at which the event generation means (4) passed the sensing means (5) during at least one previous complete revolution to of the rotor (2). Especially applicable to use of Hall Effect Sensors to detect commutation points of a brushless permanent magnet rotor in an Electric Power Assisted Steering apparatus.
摘要翻译：用于转子的角速度传感器（2）和确定角速度的方法，其中事件发生装置（4）通过感测装置（5）的位置是使用来自事件发生装置（4）的时间的信息确定的，在至少一次先前的完成旋转期间将传感装置（5）传递给转子（2）。特别适用于使用霍尔效应传感器来检测电动助力转向装置中无刷永磁转子的换向点。

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