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1. 发明申请

WO2009007681A2 ELECTRIC MOTOR CONTROL 审中-公开
标题翻译：电动马达控制
公开(公告)号：WO2009007681A2
公开(公告)日：2009-01-15
申请号：PCT/GB2008002257
申请日：2008-06-30
申请人： TRW LTD , DIXON CHRISTOPHER DAVID , ROBERTS CHRISTOPHER DIGBY
发明人： DIXON CHRISTOPHER DAVID , ROBERTS CHRISTOPHER DIGBY
IPC分类号： H02P6/18 , H02P29/02
CPC分类号： H02P21/18 , H02P29/0241 , H02P2203/09
摘要： A control system for an electric motor comprises processing means arranged to perform a control process which includes monitoring electrical voltages applied to the motor and electrical currents in the motor, and determining from them the rotational position of the motor. The system is further arranged to monitor at least one parameter of the control process thereby to detect a stall condition of the motor.
摘要翻译：一种用于电动机的控制系统包括处理装置，其被配置为执行控制过程，该控制过程包括监视施加到电动机的电压和电动机中的电流，以及从它们确定电动机的旋转位置。该系统还被布置成监视控制过程的至少一个参数，从而检测电动机的失速状态。

2. 发明申请

WO2007072033A3 ELECTRIC MOTOR CONTROL 审中-公开
标题翻译：电动机控制
公开(公告)号：WO2007072033A3
公开(公告)日：2007-08-09
申请号：PCT/GB2006004880
申请日：2006-12-21
申请人： TRW LTD , WILLIAMS CONNEL BRETT , DIXON CHRISTOPHER DAVID
发明人： WILLIAMS CONNEL BRETT , DIXON CHRISTOPHER DAVID
IPC分类号： H02P21/13 , H02P6/18
CPC分类号： H02P6/18 , B62D5/0481 , B62D5/0487 , B62D5/064 , B62D5/065 , H02P21/13
摘要： A control system for an electric motor is arranged to determine the position of the motor from at least one electrical parameter by means of a position determining algorithm. It is further arranged to monitor at least one algorithm parameter defined by the algorithm and if the monitored parameter meets a predetermined fault condition to generate a fault indication.
摘要翻译：用于电动机的控制系统被布置成借助于位置确定算法从至少一个电参数确定电动机的位置。还布置成监视由算法定义的至少一个算法参数，并且如果所监视的参数满足预定的故障条件以生成故障指示。

3. 发明申请

WO2011110828A3 ELECTRIC MOTOR CONTROL 审中-公开
标题翻译：电动马达控制
公开(公告)号：WO2011110828A3
公开(公告)日：2012-08-23
申请号：PCT/GB2011050281
申请日：2011-02-15
申请人： TRW LTD , WILLIAMS CONNEL BRETT , DIXON CHRISTOPHER DAVID , HUXFORD ROBERT JAMES
发明人： WILLIAMS CONNEL BRETT , DIXON CHRISTOPHER DAVID , HUXFORD ROBERT JAMES
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 (26) arranged to vary the phase voltage applied to each of the phases (12, 14, 6) so as to switch the motor between a plurality of active states; and control means (33). 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：一种用于包括多个相的多相无刷电动机的驱动系统，包括：驱动电路，包括被布置成改变施加到每个相（12,14,6）的相电压的开关装置（26），以便以在多个活动状态之间切换所述电动机; 和控制装置（33）。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. 发明申请

WO2008020231A2 METHODS OF PROCESSING ENCODER SIGNALS 审中-公开
标题翻译：处理编码器信号的方法
公开(公告)号：WO2008020231A2
公开(公告)日：2008-02-21
申请号：PCT/GB2007003148
申请日：2007-08-17
申请人： TRW LTD , DIXON CHRISTOPHER DAVID , WILLIAMS CONNEL BRETT , REEVE JOHN MARTIN , LI JIANG
发明人： DIXON CHRISTOPHER DAVID , WILLIAMS CONNEL BRETT , REEVE JOHN MARTIN , LI JIANG
IPC分类号： G01D5/245
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：一种在旋转编码器中处理信号的方法，所述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：在第一固定位置处提供第一检测器，当编码区域的轨道围绕其轴线旋转经过检测器时产生第一交替输出信号，所述交替信号包括在与所述检测器对应的第一状态与第一编码区域对齐和与所述第一编码区域对应的第二状态之间的一系列过渡，检测器与第二编码区域对齐; 在第二固定位置处提供第二检测器，所述第二检测器被布置成随着编码区域的轨道围绕其轴线旋转经过检测器而产生第一交变输出信号，所述交变信号包括在与检测器相对应的第一状态之间的一系列转变，与对应于第二编码区域的第一编码区域和第二状态对齐; 识别第一和第二信号中可用的一对转变，包括第一信号从第一状态到第二状态的转变，接着是第二信号从第一状态到第二状态的转变，而中间时段没有改变从第二状态到第一状态; 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。

5. 发明申请

WO2007072025A3 ELECTRIC MOTOR CONTROL 审中-公开
标题翻译：电动机控制
公开(公告)号：WO2007072025A3
公开(公告)日：2007-08-09
申请号：PCT/GB2006004870
申请日：2006-12-21
申请人： TRW LTD , WILLIAMS CONNEL BRETT , DIXON CHRISTOPHER DAVID , LI JIANG
发明人： WILLIAMS CONNEL BRETT , DIXON CHRISTOPHER DAVID , LI JIANG
IPC分类号： H02P21/14 , H02P6/18
CPC分类号： H02P6/182 , B62D5/046 , B62D5/065 , H02P6/185 , H02P21/18
摘要： A control system for an electric motor is arranged to determine the position of the motor from at least one electrical parameter by means of a position determining algorithm which is reliant on movement of the motor to determine the motor position, and to start up the motor from rest by applying voltages to the motor that are independent of the position of the motor.
摘要翻译：用于电动机的控制系统被布置成借助于位置确定算法从至少一个电参数确定电动机的位置，该位置确定算法依赖于电动机的移动以确定电动机位置并且从通过向电机施加独立于电机位置的电压来进行休息。

6. 发明申请

WO2011128695A3 MOTOR CONTROL WITH VOLTAGE HARMONIC SHAPING 审中-公开
标题翻译：具有电压谐波形状的电机控制
公开(公告)号：WO2011128695A3
公开(公告)日：2012-11-01
申请号：PCT/GB2011050748
申请日：2011-04-14
申请人： TRW LTD , WILLIAMS CONNEL BRETT , DIXON CHRISTOPHER DAVID , HUXFORD ROBERT JAMES
发明人： WILLIAMS CONNEL BRETT , DIXON CHRISTOPHER DAVID , HUXFORD ROBERT JAMES
IPC分类号： H02P29/00 , G05B11/01 , H02P21/05
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 for voltage harmonic shaping.
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要施加到所述电动机和电压需求校正装置被配置为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用于电压谐波成形的校正电压需求。

7. 发明申请

WO2009136381A3 POSITION SENSORLESS MOTOR CONTROL 审中-公开
标题翻译：位置传感器电机控制
公开(公告)号：WO2009136381A3
公开(公告)日：2010-03-11
申请号：PCT/IB2009051914
申请日：2009-05-08
申请人： TRW AUTOMOTIVE US LLC , WILLIAMS CONNEL BRETT , DIXON CHRISTOPHER DAVID , COLES JEFFERY RONALD , HUXFORD ROBERT JAMES
发明人： WILLIAMS CONNEL BRETT , DIXON CHRISTOPHER DAVID , COLES JEFFERY RONALD , HUXFORD ROBERT JAMES
IPC分类号： 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。

8. 发明申请

WO2014135867A3 MOTOR CONTROL FOR ELECTRIC POWER ASSISTED STEERING SYSTEMS 审中-公开
标题翻译：电力辅助转向系统的电机控制
公开(公告)号：WO2014135867A3
公开(公告)日：2014-11-06
申请号：PCT/GB2014050645
申请日：2014-03-05
申请人： TRW LTD
发明人： DIXON CHRISTOPHER DAVID
IPC分类号： H02P23/03 , B62D5/04
CPC分类号： H02P6/10 , B62D5/046 , B62D5/0463 , B62D5/0487 , H02P23/03
摘要： A motor control circuit for an electric motor of an electric power assisted steering system of the kind in which a measurement of torque carried by a part of the steering system is used to produce a torque demand signal indicative of a torque to be applied to the steering system by the motor, the control circuit comprising a switching circuit comprising a plurality of electrical switches, and a motor current controller that generates voltage demand signals to be passed to a drive circuit for the switches that in turn generates pulse width modulated switching signals for the switching circuit that cause the switches to selectively connect the phases to a power supply so as to cause current to flow through the phases of the motor. The current controller is responsive to an error signal that represents the difference between a current demand signal and an actual current signal, and a noise reduction circuit adapted to identify an operating condition of the system in which the motor is stationary or rotating at a very low speed, and in the event that the operating condition is identified the noise reduction circuit is adapted to reduce the response of the controller to variations in the error signal.
摘要翻译：一种用于电动助力转向系统的电动机的电动机控制电路，其中使用由转向系统的一部分承载的扭矩的测量来产生指示要施加到转向器的转矩的转矩需求信号该控制电路包括包括多个电开关的开关电路，以及电动机电流控制器，该电动机电流控制器产生要传递给用于开关的驱动电路的电压需求信号，所述驱动电路又产生用于该开关的脉宽调制开关信号开关电路，其使开关选择性地将相位连接到电源，以使电流流过电动机的相。电流控制器响应于表示当前需求信号和实际电流信号之间的差异的误差信号，以及噪声降低电路，其适于识别电动机处于静止或旋转的系统的运行状态速度，并且在确定操作条件的情况下，降噪电路适于减小控制器对误差信号变化的响应。

9. 发明申请

WO2014096807A3 CONTROL OF ELECTRIC MOTORS 审中-公开
标题翻译：电机控制
公开(公告)号：WO2014096807A3
公开(公告)日：2015-01-08
申请号：PCT/GB2013053325
申请日：2013-12-17
申请人： TRW LTD
发明人： DIXON CHRISTOPHER DAVID
IPC分类号： H02P21/00
CPC分类号： H02P6/14 , H02P6/00 , H02P6/34 , H02P21/00 , H02P21/22 , H02P27/08
摘要： A control system for a multiphase electric motor comprises processing means arranged to determine a pattern of PWM voltage waveforms to be applied to respective phases of the motor, the processing means assigning different PWM patterns for use with different motor positions, In use for a given rotational position of the motor the processing means is normally adapted to apply PWM waveforms according to the assigned PWM pattern unless a different PWM pattern is currently in use at that time, except that in the event that the demanded voltage waveforms cannot be achieved with the current PWM pattern the processing means is adapted to force the PWM pattern to change. Upon the rotor moving into a different position associated with a different assigned pattern the processing means forces the PWM pattern to change to the assigned PWM pattern.
摘要翻译：一种用于多相电动机的控制系统包括处理装置，其被配置为确定要施加到电动机的各相的PWM电压波形的模式，所述处理装置分配不同的PWM模式以用于不同的电动机位置。电机的位置，处理装置通常适用于根据分配的PWM模式施加PWM波形，除非当时正在使用不同的PWM模式，除了在电流PWM无法实现所需电压波形的情况下图案处理装置适于强制PWM模式改变。当转子移动到与不同分配模式相关联的不同位置时，处理装置迫使PWM模式改变为所分配的PWM模式。

10. 发明申请

WO2014083338A3 IMPROVEMENTS IN MOTOR CONTROLLERS 审中-公开
标题翻译：电机控制器的改进
公开(公告)号：WO2014083338A3
公开(公告)日：2015-05-14
申请号：PCT/GB2013053141
申请日：2013-11-27
申请人： TRW LTD
发明人： DIXON CHRISTOPHER DAVID , HUXFORD ROBERT JAMES
IPC分类号： G01D5/244 , H02P6/16
CPC分类号： H02P6/16 , G01D5/244 , G01D5/24476 , H02P21/50
摘要： A method of estimating the position of a rotor of an electric motor comprises producing an output signal indicative of motor position using a position sensor which comprises a detector and at least one encoder which rotates along with the rotor of the motor and includes a plurality of encoding regions, the output signal of the sensor varying in a stepwise fashion as the encoding regions move past the detector, and passing the output of the sensor through a smoothing algorithm to produce an estimated position signal, the algorithm being arranged to smooth the transition between the steps in the output of the sensor by causing the estimated position signal to lag behind the output of the sensor following a step change in the output of the sensor.
摘要翻译：估计电动机的转子的位置的方法包括使用包括检测器的位置传感器产生表示电动机位置的输出信号，以及至少一个与电动机的转子一起旋转的编码器，并且包括多个编码区域，传感器的输出信号随着编码区域移动通过检测器而以逐步的方式变化，并且通过平滑算法传递传感器的输出以产生估计的位置信号，该算法被设置为平滑通过使传感器的输出的阶跃变化后的估计位置信号滞后于传感器的输出，传感器的输出的步长。

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