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1. 发明授权

US07525268B2 Control device for an electric motor and related method 有权
标题翻译：电动机控制装置及相关方法
公开(公告)号：US07525268B2
公开(公告)日：2009-04-28
申请号：US11735184
申请日：2007-04-13
申请人： Marco Viti
发明人： Marco Viti
IPC分类号： H02P23/12
CPC分类号： H02P6/18 , H02P6/157 , H02P25/03
摘要： A control device controls an electric motor that includes a winding and generates a back electromotive force. The device comprises a first circuit suitable for setting time periods each centered on the time instant of an expected zero crossing of the winding current and a second circuit suitable for generating a signal representing the polarity in the winding in the time periods. The first and second circuits are suitable for providing samples of the polarity signal. The control device comprises a counting circuit suitable for counting the samples of the polarity signal and a further circuit receiving the count and being suitable for deducing the distance between the time instant of the expected zero crossing and the actual zero crossing instant; the further means is suitable for determining the phase shift between the driving voltage of the electric motor and the induced back electromotive force based on the distance.
摘要翻译：控制装置控制包括绕组的电动机并产生反电动势。该装置包括适于设置每个以绕组电流的预期过零的时刻为中心的时间周期的第一电路和适于在时间段中产生表示绕组中的极性的信号的第二电路。第一和第二电路适用于提供极性信号的样本。该控制装置包括一个适用于计数极性信号的样本的计数电路和一个接收该计数的另一个电路，并且适于推断预期过零点的时刻与实际过零时刻之间的距离; 另外的装置适用于基于距离来确定电动机的驱动电压和感应反电动势之间的相移。

2. 发明申请

US20070296360A1 MONITORING DEVICE OF ROTOR POSITION OF AN ELECTRIC MOTOR AND CORRESPONDING METHOD 有权
标题翻译：电动机转子位置监控装置及相应方法
公开(公告)号：US20070296360A1
公开(公告)日：2007-12-27
申请号：US11735199
申请日：2007-04-13
申请人： Marco Viti
发明人： Marco Viti
IPC分类号： H02P7/06 , H02P29/02
CPC分类号： H02P6/182
摘要： A monitoring device for an electric motor has in input a signal representing zero crossings of the back-electromotive force of the motor and comprises a monitor that detects the signal in first periods of time arranged around instants of time in which the zero crossings are expected. The device comprises a setting circuit that sets second periods of time that are less than the first periods of time and each second period of time is centered on the instant of time in which the zero crossing is expected. The monitor comprises a detector that tests whether each actual zero crossing occurs inside the second period of time and a controller that modifies by a quantity the subsequent period of electric revolution time between two consecutive expected instants of zero crossing if said actual zero crossing occurs outside the second period of time.
摘要翻译：用于电动机的监视装置输入表示电动机的反电动势的零交叉的信号，并且包括监视器，该监视器在预期为零交叉的时刻的时刻周围设置的第一时间段中检测信号。设备包括设置电路，其设置小于第一时间段的第二时间段，并且每个第二时间段以期望过零的时刻为中心。该监视器包括检测器，其检测每个实际过零点是否发生在第二时段内;以及控制器，如果所述实际过零点发生在第二段时间。

3. 发明授权

US07164244B2 Apparatus for controlling electric motors and related control method 有权
标题翻译：电动机控制装置及相关控制方法
公开(公告)号：US07164244B2
公开(公告)日：2007-01-16
申请号：US11001660
申请日：2004-12-01
申请人： Marco Viti
发明人： Marco Viti
IPC分类号： H02P3/08
CPC分类号： H02M7/53875 , Y10S388/907 , Y10S388/912
摘要： An electric motor controller controls the currents flowing through the phase windings of an electric motor. The electric motor controller includes driving stages for driving respective phase windings of the motor and a memory for storing samples of reference signals. The driving stages force currents corresponding to the reference signals through a respective phase winding of the motor. The electric motor controller includes circuitry to determine subdivision degree intervals of an electric rotation and circuitry for comparing one of the currents flowing through the respective phase windings of the motor with at least one of the samples of the respective reference signal in at least one portion of each one of the degree intervals.
摘要翻译：电动机控制器控制流过电动机的相绕组的电流。电动机控制器包括用于驱动电动机的各相绕组的驱动级和用于存储参考信号样本的存储器。驱动级通过电动机的各自的相绕励力来对应于参考信号的电流。电动机控制器包括用于确定电动旋转的细分度间隔的电路和用于将流过电动机的相应相位绕组的电流中的一个电流与相应参考信号的至少一个样本在至少一部分每个度数间隔。

4. 发明申请

US20050280382A1 Apparatus for controlling electric motors and related control method 有权
标题翻译：电动机控制装置及相关控制方法
公开(公告)号：US20050280382A1
公开(公告)日：2005-12-22
申请号：US11001660
申请日：2004-12-01
申请人： Marco Viti
发明人： Marco Viti
IPC分类号： H02M7/5387 , H02P7/06
CPC分类号： H02M7/53875 , Y10S388/907 , Y10S388/912
摘要： An electric motor controller controls the currents flowing through the phase windings of an electric motor. The electric motor controller includes driving stages for driving respective phase windings of the motor and a memory for storing samples of reference signals. The driving stages force currents corresponding to the reference signals through a respective phase winding of the motor. The electric motor controller includes circuitry to determine subdivision degree intervals of an electric gyro and circuitry for comparing one of the currents flowing through the respective phase windings of the motor with at least one of the samples of the respective reference signal in at least one portion of each one of the degree intervals.
摘要翻译：电动机控制器控制流过电动机的相绕组的电流。电动机控制器包括用于驱动电动机的各相绕组的驱动级和用于存储参考信号样本的存储器。驱动级通过电动机的各自的相绕励力来对应于参考信号的电流。电动机控制器包括用于确定电陀螺仪的细分度间隔的电路和用于将流过电动机的各相绕组的电流中的一个电流与相应参考信号的至少一个样本在至少一部分每个度数间隔。

5. 发明授权

US06541936B2 Start procedure for brushless motors 有权
公开(公告)号：US06541936B2
公开(公告)日：2003-04-01
申请号：US09907549
申请日：2001-07-17
申请人： Marco Viti
发明人： Marco Viti
IPC分类号： H02P736
CPC分类号： H02P6/22 , H02P6/185
摘要： A start-up procedure for a multiphase brushless motor to be accelerated until reaching a certain speed includes determining the starting position of the rotor and performing an excitation phase including forcing a drive current in the phase windings of the motor for an established period of time. This is done according to a switching sequence for inducing a rotation in the desired direction. Furthermore, the method may include sensing the position reached by the rotor at the end of each excitation phase. The start-up procedure is eventually interrupted when the established speed has been reached or exceeded. Additionally, the duration of a next phase of excitation may be increased or reduced, and the switching sequence may be modified, based upon the number of consecutive times in which the current position is found to be the same or different from the previously detected position, respectively.

6. 发明授权

US06420847B1 Device for detection of current or voltage on a PWM driven winding with reduced jitter and related methods 有权
标题翻译：用于通过减少抖动和相关方法检测PWM驱动绕组上的电流或电压的装置
公开(公告)号：US06420847B1
公开(公告)日：2002-07-16
申请号：US09672466
申请日：2000-09-28
申请人： Ezio Galbiati , Michele Boscolo , Marco Viti
发明人： Ezio Galbiati , Michele Boscolo , Marco Viti
IPC分类号： H02P124
CPC分类号： H02P6/182
摘要： A method for detecting a zero-cross event of an induced back electromotive force (BEMF) or of a nullification instant of a periodic current in a PWM driven winding, by circuits generating an analog signal representative of the induced BEMF or of the nullification instant of the periodic current, comparing the analog signal with zero and producing a first logic signal, generating a PWM driving signal, and storing a time between two consecutive zero-cross events, is provided. The method may include storing a time between a last two zero-cross events and synchronizing the PWM driving signal from a last zero-cross event having a duration equal to a difference between an established time based upon the stored time interval and a first time. If a new zero-cross event is not detected within the established time, switching of the PWM driving signal may be disabled for a time having a maximum duration equal to a second time or until a new zero-cross event is detected.
摘要翻译：一种用于检测PWM驱动绕组中的感应反电动势（BEMF）或周期性电流的无效瞬间的零交叉事件的方法，通过产生代表所诱导的BEMF的模拟信号的电路或者产生提供周期性电流，将模拟信号与零比较并产生第一逻辑信号，产生PWM驱动信号，并且存储两个连续零交叉事件之间的时间。该方法可以包括在最后的两个过零事件之间存储时间，并且使来自最后的零交叉事件的PWM驱动信号与具有基于存储的时间间隔和第一时间的建立时间之间的差异的持续时间相等的PWM驱动信号。如果在建立的时间内没有检测到新的零交叉事件，则可以在具有等于第二时间的最大持续时间或直到检测到新的零交叉事件的时间之前禁用PWM驱动信号的切换。

7. 发明授权

US5838128A Reconstruction of BEMF signals for synchronizing the driving of brushless- sensorless motors by means of predefined driving signals 失效
标题翻译：通过预定义的驱动信号重构BEMF信号，以使无刷无传感器电机的驱动同步
公开(公告)号：US5838128A
公开(公告)日：1998-11-17
申请号：US901611
申请日：1997-07-28
申请人： Giuseppe Maiocchi , Marco Viti
发明人： Giuseppe Maiocchi , Marco Viti
IPC分类号： H02P6/182 , H02P6/34 , H02P8/34 , H02P6/18
CPC分类号： H02P8/34 , H02P6/182 , H02P6/34
摘要： The sensing of BEMF signals in the motor's windings for synchronizing the phase switchings, in driving a brushless and sensorless motor with predefined constant voltage or current values or predefined voltage or current profiles stored permanently in a memory, is greatly simplified through a reconstruction technique that avails itself of the knowledge of the predefined drive values. The sensing does not require access to the center star point and is performed by sensing either the voltage difference between the terminals of two windings or of the current flowing in two windings, depending on whether a current or voltage mode is employed.
摘要翻译：在使用预定义的恒定电压或电流值驱动无刷电机和无传感器电机或者永久存储在存储器中的预定电压或电流曲线的情况下，电动机绕组中BEMF信号的感测可以使相位切换同步，通过一种重建技术可以大大简化本身就了解了预定义的驱动值。感测不需要访问中心星点，并且通过感测两个绕组的端子之间的电压差或者在两个绕组中流动的电流之间的电压差来执行，这取决于是否采用电流或电压模式。

8. 发明授权

US10817693B1 System for decode of two-dimensional indicia 有权
公开(公告)号：US10817693B1
公开(公告)日：2020-10-27
申请号：US16507149
申请日：2019-07-10
申请人： Marco Bassani , Marco Viti
发明人： Marco Bassani , Marco Viti
IPC分类号： G06K7/14 , G06K7/10
摘要： An apparatus includes a programmable logic configured to: convolve a stencil in a non-rotated orientation about a 2D array of pixels of a captured image received as image data from a camera to generate non-rotated stencil data; generate rotated stencil data based on a rotation of the stencil into a rotated orientation; generate, based on the non-rotated and rotated stencil data, a per-pixel density map indicative of a location of a corner of a 2D indicia within the captured image; employ noise filtering and subsampling to generate, based on the per-pixel density map, a per-tile density map indicative of the location of the corner of the 2D indicia within a 2D array of tiles that corresponds to the 2D array of pixels of the captured image; and generate, based on the per-tile density map, 2D indicia metadata indicative of the location of the 2D indicia within the captured image.

9. 发明授权

US06320343B1 Fine phase frequency multipiler for a brushless motor and corresponding control method 有权
标题翻译：无刷电机精相倍频器及相应的控制方法
公开(公告)号：US06320343B1
公开(公告)日：2001-11-20
申请号：US09506501
申请日：2000-02-17
申请人： Marco Viti
发明人： Marco Viti
IPC分类号： G05B1101
CPC分类号： H02P6/18
摘要： A circuit to establish an accurate instantaneous position of a DC motor rotor includes an input terminal to receive a rotor position signal. A first counter circuit counts to a value between two successive rotor position signals at a slow clock rate, and stores this count value in a register. Then a second counter begins counting from zero at a system clock rate, which is faster than the slow clock rate. The first counter circuit and the second counter circuit are evaluated by a comparator, and when the counters equal one another, the instantaneous position signal is generated. Alternately, the second counter can be a down-counter that is initially loaded with the count value, and the instantaneous position signal is generated when the second counter reaches zero. In both versions, another sub-circuit can be added which, for a first cycle after the rotor position signal is received, causes the instantaneous position signal to be generated at a time calculated to equal the lag time from the actual position of the motor rotor and when the rotor position signal is received. In the first version, the comparator outputs the signal when the second counter reaches the offset count value, instead of when the second counter reaches the count value generated by the first counter. In the second version, the offset value is loaded into the count-down timer the first cycle after the rotor position signal is received.
摘要翻译：建立直流电动机转子的精确瞬时位置的电路包括用于接收转子位置信号的输入端子。第一个计数器电路以缓慢的时钟速率计数到两个连续的转子位置信号之间的值，并将该计数值存储在寄存器中。然后，第二个计数器从系统时钟速率开始从零开始计数，这比缓慢的时钟速率更快。第一计数器电路和第二计数器电路由比较器评估，并且当计数器彼此相等时，产生瞬时位置信号。或者，第二计数器可以是初始加载计数值的递减计数器，并且当第二计数器达到零时产生瞬时位置信号。在这两个版本中，可以添加另一个子电路，对于在接收到转子位置信号之后的第一个周期，使得瞬时位置信号在计算为等于从电动机转子的实际位置的滞后时间的时间产生并且当接收到转子位置信号时。在第一版本中，当第二计数器达到偏移计数值时，比较器输出信号，而不是当第二计数器达到由第一计数器产生的计数值时。在第二版本中，在接收到转子位置信号之后的第一个周期，偏移值被加载到倒计时定时器中。

10. 发明授权

US06249101B1 Start-up procedure for brushless DC motors having position sensors with angular resolution lower than the resolution of the driving system 有权
标题翻译：具有角度分辨率低于驱动系统分辨率的位置传感器的无刷直流电机的启动程序
公开(公告)号：US06249101B1
公开(公告)日：2001-06-19
申请号：US09490960
申请日：2000-01-24
申请人： Marco Viti , Michele Boscolo
发明人： Marco Viti , Michele Boscolo
IPC分类号： G05B1101
CPC分类号： H02P6/22
摘要： A start-up routine is provided for a multiphase brushless DC motor having one or more rotor position sensors insufficient to provide for an angular resolution as high as the angular resolution of the synchronized driving system of the motor. The start-up routine includes setting at least an angular check zone having a certain arc length angularly correlated to the one or more rotor position sensors, assuming a certain initial rest position of the rotor, and exciting for fixed time intervals the phase windings in a sequence for rotating the rotor toward an angular position next to the initial position. This routing is performed in the desired direction while masking the signals from the one or more rotor position sensors for a preestablished masking time. The step of exciting for fixed time intervals is repeated until verifying that the excited phases are those commanding advancement of the rotor toward the angular check zone, or a change of state of the signals of the one or more rotor position sensors if the masking time has elapsed. The start-up routine further includes associating to each code of the position sensors a new angular check zone to be reached by repeating the sequence of operations starting from step of exciting.
摘要翻译：为具有一个或多个转子位置传感器的多相无刷直流电动机提供启动例程，该转子位置传感器不足以提供高达电动机的同步驱动系统的角度分辨率的角度分辨率。启动程序包括设置至少一个具有与一个或多个转子位置传感器成角度相关的一定弧长的角度检查区，假定转子的某个初始静止位置，并激励固定的时间间隔用于使转子朝向初始位置旁边的角位置旋转的顺序。为了预先建立的掩蔽时间，屏蔽来自一个或多个转子位置传感器的信号，沿所需方向执行该路由。重复固定时间间隔的激励步骤，直到验证激励相是指向转角朝向角度检查区域前进的那些，或者如果掩蔽时间具有一个或多个转子位置传感器的信号的状态的改变过去。启动例程还包括通过重复从激励步骤开始的操作序列，将位置传感器的每个代码关联到要达到的新的角度检查区域。

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