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1. 发明申请

US20110057593A1 Position Sensorless Motor Control 有权
标题翻译：无位置传感器电机控制
公开(公告)号：US20110057593A1
公开(公告)日：2011-03-10
申请号：US12990996
申请日：2009-05-08
申请人： Connel Brett Williams , Christopher David Dixon , Jeffery Ronald Coles , Robert James Huxford
发明人： Connel Brett Williams , Christopher David Dixon , Jeffery Ronald Coles , Robert James Huxford
IPC分类号： H02P6/16
CPC分类号： H02P6/18 , H02P6/16 , H02P6/185 , H02P6/186 , H02P2203/01
摘要： A control system is provided for an AC electric motor which comprises a rotor and a stator and a plurality of phase windings connected in a star formation, each winding having one end connected to a common neutral point and another end arranged to have a terminal voltage applied to it. The control system comprises switching means arranged to control the terminal voltages applied to the windings and control means arranged to control the switching means so as to switch it between a plurality of states in each of a sequence of PWM periods. The control means is further arranged to measure the voltage at the neutral point at sample times within the PWM periods and to generate from the measured voltages an estimation of the rotational position of the rotor.
摘要翻译：提供了一种用于AC电动机的控制系统，该AC电动机包括转子和定子以及以星形连接的多个相绕组，每个绕组的一端连接到公共中性点，另一端被布置成施加端电压给它控制系统包括被设置为控制施加到绕组的端子电压的开关装置和被布置成控制开关装置的控制装置，以便在PWM周期的每个序列中的多个状态之间切换它。控制装置进一步被布置成在PWM周期内的采样时间处测量中性点处的电压，并从测量的电压产生转子旋转位置的估计。

2. 发明申请

US20130193898A1 Motor Control with Voltage Harmonic Shaping 有权
标题翻译：电动机控制与电压谐波整形
公开(公告)号：US20130193898A1
公开(公告)日：2013-08-01
申请号：US13641498
申请日：2011-04-14
申请人： Connel Brett Williams , Christopher David Dixon , Robert James Huxford
发明人： Connel Brett Williams , Christopher David Dixon , Robert James Huxford
IPC分类号： H02P6/00
CPC分类号： H02P6/002 , G05B5/01 , H02P21/05 , H02P21/06 , H02P21/22 , H02P29/50
摘要： A control system for an electric motor comprises a current sensing means arranged to produce a current sensing output indicative of electric current in the motor, current control means arranged to receive the current sensing output and to output a voltage demand indicative of voltages to be applied to the motor, and voltage demand correction means arranged to generate a correction signal and to use the correction signal and the voltage demand to produce a corrected voltage demand.
摘要翻译：一种用于电动机的控制系统包括电流感测装置，其被布置成产生指示电动机中的电流的电流感测输出，电流控制装置，被布置成接收电流感测输出并输出指示施加到所述电动机和电压需求校正装置被布置成产生校正信号并且使用所述校正信号和所述电压需求来产生校正的电压需求。

3. 发明授权

US09030137B2 Electric motor control 有权
标题翻译：电机控制
公开(公告)号：US09030137B2
公开(公告)日：2015-05-12
申请号：US13583770
申请日：2011-02-15
申请人： Connel Brett Williams , Christopher David Dixon , Robert James Huxford
发明人： Connel Brett Williams , Christopher David Dixon , Robert James Huxford
IPC分类号： H02P6/00 , H02P27/08
CPC分类号： H02P6/001 , H02P6/007 , H02P6/34 , H02P27/08
摘要： A drive system, for a multi-phase brushless electric motor comprising a plurality of phases, comprises: a drive circuit including switch means arranged to vary the phase voltage applied to each of the phases so as to switch the motor between a plurality of active states; and control means. The control means is arranged to control the switch means so as to provide PWM control of the phase voltages to control the mechanical output of the motor. The control means is arranged to define a sequence for all of the active states and, for each PWM period, to allocate state times for the states required for that period to generate a desired net voltage, and to order the required states in the same order as they occur in the sequence.
摘要翻译：一种用于包括多相的多相无刷电动机的驱动系统，包括：驱动电路，包括：开关装置，其被布置成改变施加到每个相的相电压，以便在多个激活状态 ; 和控制装置。控制装置被设置为控制开关装置，以便提供相电压的PWM控制以控制电动机的机械输出。控制装置被布置成为所有活动状态定义一个序列，并且对于每个PWM周期，为该周期所需的状态分配状态时间以产生期望的净电压，并以相同顺序对所需状态进行排序因为它们在序列中出现。

4. 发明授权

US09966882B2 Current sensor error compensation 有权
公开(公告)号：US09966882B2
公开(公告)日：2018-05-08
申请号：US13581933
申请日：2011-02-16
申请人： Connel Brett Williams , Christopher David Dixon , Robert James Huxford
发明人： Connel Brett Williams , Christopher David Dixon , Robert James Huxford
IPC分类号： H02P6/10 , H02P21/00 , H02P21/05 , H02P21/22 , H02P29/50
CPC分类号： H02P6/10 , H02P21/00 , H02P21/05 , H02P21/22 , H02P29/50
摘要： A control system for an electric motor comprises a current sensing means arranged to produce a current sensing output indicative of electric current in the motor, current control means arranged to receive the current sensing output and to output a voltage demand indicative of voltages to be applied to the motor, and current sensing correction means arranged to monitor the voltage demand to measure distortion in the current sensing output and to generate a correction signal which is arranged to correct the distortion.

5. 发明授权

US09041334B2 Motor control with voltage harmonic shaping 有权
标题翻译：电机谐波整形电机控制
公开(公告)号：US09041334B2
公开(公告)日：2015-05-26
申请号：US13641498
申请日：2011-04-14
申请人： Connel Brett Williams , Christopher David Dixon , Robert James Huxford
发明人： Connel Brett Williams , Christopher David Dixon , Robert James Huxford
IPC分类号： H02P1/00 , H02P1/28 , H02P3/00 , H02P6/00 , H02P21/06 , G05B5/01 , H02P21/05 , H02P29/00 , H02P21/00
CPC分类号： H02P6/002 , G05B5/01 , H02P21/05 , H02P21/06 , H02P21/22 , H02P29/50
摘要： A control system for an electric motor comprises a current sensing means arranged to produce a current sensing output indicative of electric current in the motor, current control means arranged to receive the current sensing output and to output a voltage demand indicative of voltages to be applied to the motor, and voltage demand correction means arranged to generate a correction signal and to use the correction signal and the voltage demand to produce a corrected voltage demand.
摘要翻译：一种用于电动机的控制系统包括电流感测装置，其被布置成产生指示电动机中的电流的电流感测输出，电流控制装置，被布置成接收电流感测输出并输出指示施加到所述电动机和电压需求校正装置被布置成产生校正信号并且使用所述校正信号和所述电压需求来产生校正的电压需求。

6. 发明授权

US08502488B2 Position sensorless motor control 有权
标题翻译：无位置传感器电机控制
公开(公告)号：US08502488B2
公开(公告)日：2013-08-06
申请号：US12990996
申请日：2009-05-08
申请人： Connel Brett Williams , Christopher David Dixon , Jeffery Ronald Coles , Robert James Huxford
发明人： Connel Brett Williams , Christopher David Dixon , Jeffery Ronald Coles , Robert James Huxford
IPC分类号： H02P6/02 , H02P6/16 , H02P6/18
CPC分类号： H02P6/18 , H02P6/16 , H02P6/185 , H02P6/186 , H02P2203/01
摘要： A control system is provided for an AC electric motor which comprises a rotor and a stator and a plurality of phase windings connected in a star formation, each winding having one end connected to a common neutral point and another end arranged to have a terminal voltage applied to it. The control system comprises switching means arranged to control the terminal voltages applied to the windings and control means arranged to control the switching means so as to switch it between a plurality of states in each of a sequence of PWM periods. The control means is further arranged to measure the voltage at the neutral point at sample times within the PWM periods and to generate from the measured voltages an estimation of the rotational position of the rotor.
摘要翻译：提供了一种用于AC电动机的控制系统，该AC电动机包括转子和定子以及以星形连接的多个相绕组，每个绕组的一端连接到公共中性点，另一端被布置成施加端电压给它控制系统包括被设置为控制施加到绕组的端子电压的开关装置和被布置成控制开关装置的控制装置，以便在PWM周期的每个序列中的多个状态之间切换它。控制装置进一步被布置成在PWM周期内的采样时间处测量中性点处的电压，并从测量的电压产生转子旋转位置的估计。

7. 发明申请

US20130134914A1 Electric Motor Control 有权
标题翻译：电机控制
公开(公告)号：US20130134914A1
公开(公告)日：2013-05-30
申请号：US13583770
申请日：2011-02-15
申请人： Connel Brett Williams , Christopher David Dixon , Robert James Huxford
发明人： Connel Brett Williams , Christopher David Dixon , Robert James Huxford
IPC分类号： H02P6/00
CPC分类号： H02P6/001 , H02P6/007 , H02P6/34 , H02P27/08
摘要： A drive system, for a multi-phase brushless electric motor comprising a plurality of phases, comprises: a drive circuit including switch means arranged to vary the phase voltage applied to each of the phases so as to switch the motor between a plurality of active states; and control means. The control means is arranged to control the switch means so as to provide PWM control of the phase voltages to control the mechanical output of the motor. The control means is arranged to define a sequence for all of the active states and, for each PWM period, to allocate state times for the states required for that period to generate a desired net voltage, and to order the required states in the same order as they occur in the sequence.
摘要翻译：一种用于包括多相的多相无刷电动机的驱动系统，包括：驱动电路，包括：开关装置，其被布置成改变施加到每个相的相电压，以便在多个激活状态 ; 和控制装置。控制装置被设置为控制开关装置，以便提供相电压的PWM控制以控制电动机的机械输出。控制装置被布置成为所有活动状态定义一个序列，并且对于每个PWM周期，为该周期所需的状态分配状态时间以产生期望的净电压，并以相同顺序对所需状态进行排序因为它们在序列中出现。

8. 发明申请

US20130106332A1 Current Sensor Error Compensation 有权
标题翻译：电流传感器误差补偿
公开(公告)号：US20130106332A1
公开(公告)日：2013-05-02
申请号：US13581933
申请日：2011-02-16
申请人： Connel Brett Williams , Christopher David Dixon , Robert James Huxford
发明人： Connel Brett Williams , Christopher David Dixon , Robert James Huxford
IPC分类号： H02P6/10
CPC分类号： H02P6/10 , H02P21/00 , H02P21/05 , H02P21/22 , H02P29/50
摘要： A control system for an electric motor comprises a current sensing means arranged to produce a current sensing output indicative of electric current in the motor, current control means arranged to receive the current sensing output and to output a voltage demand indicative of voltages to be applied to the motor, and current sensing correction means arranged to monitor the voltage demand to measure distortion in the current sensing output and to generate a correction signal which is arranged to correct the distortion.
摘要翻译：一种用于电动机的控制系统包括电流感测装置，其被布置成产生指示电动机中的电流的电流感测输出，电流控制装置，被布置成接收电流感测输出并输出指示施加到电动机和电流检测校正装置，被布置成监视电压需求以测量电流感测输出中的失真，并产生校正信号，该校正信号被布置为校正失真。

9. 发明申请

US20110187355A1 METHOD OF PROCESSING ENCODER SIGNALS 有权
标题翻译：加密编码器信号的方法
公开(公告)号：US20110187355A1
公开(公告)日：2011-08-04
申请号：US12377777
申请日：2007-08-17
申请人： Christopher David Dixon , Connel Brett Williams , John Martin Reeve , Jiang Li
发明人： Christopher David Dixon , Connel Brett Williams , John Martin Reeve , Jiang Li
IPC分类号： G01B7/30
CPC分类号： G01D5/2451 , G01D5/145 , G01D5/24452 , G01D5/2448 , G01D5/2449 , G01P3/481 , G01P3/487
摘要： A method of processing signals in a rotary encoder of the kind which comprises at least one annular track of encoding regions arranged as an alternating pattern of first encoding regions and second encoding regions, comprises providing a first detector at a first fixed position which is arranged to produce a first alternating output signal as the track of encoding regions rotates about its axis past the detector, the alternating signal comprising a series of transitions between a first state corresponding to the detector being aligned with a first encoding region and a second state corresponding to the detector being aligned with second encoding region; providing a second detector at a second fixed position which is arranged to produce a first alternating output signal as the track of encoding regions rotates about its axis past the detector, the alternating signal comprising a series of transitions between a first state corresponding to the detector being aligned with a first encoding region and a second state corresponding to the detector being aligned with second encoding region; identifying a usable pair of transitions in the first and second signals comprising a transition of the first signal from the first state to the second state followed by a transition in the second signal from the first state to the second state without in the intervening period having changed from the second state to the first state; measuring the elapsed time between the transitions of the identified usable pair, and determining the angular velocity by combining the elapsed time with the spacing between the first and second detectors.
摘要翻译：一种处理这种旋转编码器中的信号的方法，该旋转编码器包括被布置为第一编码区域和第二编码区域的交替图案的编码区域的至少一个环形轨道，包括在第一固定位置提供第一检测器，该第一检测器布置成产生第一交替输出信号，因为编码区的轨道围绕其轴旋转超过检测器，所述交变信号包括与检测器相对应的第一状态与第一编码区对准的第一状态与对应于检测器的第二状态之间的一系列转变检测器与第二编码区域对准; 在第二固定位置提供第二检测器，所述第二固定位置被布置成当所述编码区域的轨道围绕其轴旋转超过所述检测器时产生第一交替输出信号，所述交变信号包括与所述检测器相对应的第一状态之间的一系列转变与第一编码区对准的第二状态和对应于检测器的第二状态与第二编码区对齐; 识别所述第一和第二信号中的可用转换对，包括所述第一信号从所述第一状态到所述第二状态的转变，随后在所述第二信号中从所述第一状态到所述第二状态的转变，从第二个状态到第一个状态; 测量所识别的可用对的转变之间的经过时间，以及通过将经过的时间与第一和第二检测器之间的间隔组合来确定角速度。

10. 发明授权

US07612522B2 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：US07612522B2
公开(公告)日：2009-11-03
申请号：US11983196
申请日：2007-11-07
申请人： Connel Brett Williams , Jeffrey Ronald Coles , Adrian Szabo , Christopher David Dixon , Jiang Li , Abbas Ahmad Fardoun
发明人： Connel Brett Williams , Jeffrey Ronald Coles , Adrian Szabo , Christopher David Dixon , Jiang Li , Abbas Ahmad Fardoun
IPC分类号： H02P1/26
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。

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