公开(公告)号：US06949906B2

公开(公告)日：2005-09-27

申请号：US10147347

申请日：2002-05-16

申请人： Michele Boscolo ,  Marco Viti ,  Ezio Galbiati

发明人： Michele Boscolo ,  Marco Viti ,  Ezio Galbiati

IPC分类号： H02P6/24 ,  G05B11/28

CPC分类号： H02P6/24

摘要： A driving circuit of a DC motor includes a control circuit for providing a control signal, and a motor drive circuit commanded by the control circuit for providing respective command signals for the switches of an output power stage connected to the DC motor. The output power stage is connected to a power supply line and drives the windings of the DC motor. The driving circuit prevents generation of voltage surges having a significant magnitude on the power supply line because the driving circuit has logic circuits for preventing any substantial inversion in the direction of current flow in the supply lines when the DC motor operates as a current generator.

摘要翻译： DC电动机的驱动电路包括用于提供控制信号的控制电路和由控制电路命令的用于为连接到DC电动机的输出功率级的开关提供相应命令信号的电动机驱动电路。 输出功率级连接到电源线并驱动直流电机的绕组。 驱动电路防止在电源线上产生具有显着量值的电压浪涌，因为驱动电路具有逻辑电路，用于当DC电动机作为电流发生器工作时，防止电源线中的电流方向发生任何实质的反转。

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。

公开(公告)号：US6137253A

公开(公告)日：2000-10-24

申请号：US256278

申请日：1999-02-23

申请人： Ezio Galbiati ,  Michele Boscolo ,  Marco Viti

发明人： Ezio Galbiati ,  Michele Boscolo ,  Marco Viti

IPC分类号： H02P6/08 ,  H02P6/14 ,  H02P7/00

CPC分类号： H02P6/14 ,  H02P6/085

摘要： A method is for driving a multiphase brushless motor with N windings connected in a star or in a polygonal configuration. The windings are driven according to a certain periodic voltage profile. The method includes cyclically keeping for a certain time interval at least one of the N windings in a fixed state of low or high saturation and applying to the other phase windings instantaneous voltages according to a predefined different periodic voltage profile such that the resultant voltages on the windings are coherent with the certain periodic voltage profile. The number of intervals, in an entire electrical period, in which the fixed high or low saturation state of one winding is produced, depends on the predefined driving profile and upon the number N of windings of the motor.

摘要翻译： 一种用于驱动具有以星形或多边形配置连接的N个绕组的多相无刷电动机的方法。 绕组根据一定的周期性电压分布进行驱动。 该方法包括以一定的时间间隔将固定的低或高饱和状态的N个绕组中的至少一个周期性地保持一段时间，并根据预定义的不同的周期性电压分布施加到另一相绕组的瞬时电压， 绕组与一定的周期性电压分布相干。 在产生一个绕组的固定的高或低饱和状态的整个电气周期中的间隔的数量取决于预定的驱动轮廓和电动机的绕组数量N。

公开(公告)号：US06804131B2

公开(公告)日：2004-10-12

申请号：US10367665

申请日：2003-02-14

申请人： Ezio Galbiati ,  Michele Boscolo

发明人： Ezio Galbiati ,  Michele Boscolo

IPC分类号： H02M35387

CPC分类号： H02M7/53871 ,  H02P25/034

摘要： The present invention relates a Pulse Width Modulation (PWM)/linear driver for an electromagnetic load by a bridge circuit of the type having a signal input and a signal output and at least two conduction control inputs for driving a voice coil motor in a linear mode and in a pulse width modulation. The bridge circuit is driven by a PWM converter coupled to one of said two control inputs and by a linear amplifier coupled to the other of said two control inputs.

摘要翻译： 本发明涉及一种具有信号输入和信号输出类型的桥式电路的用于电磁负载的脉冲宽度调制（PWM）/线性驱动器，以及用于以线性模式驱动音圈电机的至少两个导通控制输入 并以脉冲宽度调制。 桥式电路由耦合到所述两个控制输入之一的PWM转换器和耦合到所述两个控制输入中的另一个的线性放大器驱动。

公开(公告)号：US6150963A

公开(公告)日：2000-11-21

申请号：US304678

申请日：1999-05-04

申请人： Michele Boscolo ,  Ezio Galbiati ,  Marco Vitti

发明人： Michele Boscolo ,  Ezio Galbiati ,  Marco Vitti

IPC分类号： H03M5/08

CPC分类号： H03M5/08

摘要： A method and system produce a PWM signal using a comparator having first and second input terminals and an output terminal at which the PWM signal is produced. The method includes powering the comparator with a supply voltage and receiving a modulating signal at the first input terminal. The method creates a carrier signal with a constant frequency and a maximum amplitude equal to the supply voltage. The comparator receives the carrier signal at the second input terminal and compares the carrier signal to the modulating signal, thereby producing the PWM signal at the output terminal. By creating and using a carrier signal with a maximum amplitude equal to the supply voltage, the PWM signal produced by the method is immune from changes in the supply voltage.

摘要翻译： 方法和系统使用具有第一和第二输入端的比较器和产生PWM信号的输出端产生PWM信号。 该方法包括用比较器供电并在第一输入端接收调制信号。 该方法产生具有等于电源电压的恒定频率和最大振幅的载波信号。 比较器在第二输入端接收载波信号，并将载波信号与调制信号进行比较，从而在输出端产生PWM信号。 通过产生和使用具有等于电源电压的最大幅度的载波信号，由该方法产生的PWM信号免于电源电压的变化。

公开(公告)号：US6057663A

公开(公告)日：2000-05-02

申请号：US131249

申请日：1998-08-05

申请人： Ezio Galbiati ,  Michele Boscolo ,  Luca Bertolini

发明人： Ezio Galbiati ,  Michele Boscolo ,  Luca Bertolini

IPC分类号： H02P6/08 ,  H02P6/28 ,  G05B11/28

CPC分类号： H02P6/085 ,  H02P6/28

摘要： The control of the current in a PWM mode through independently controlled windings of a multi-phase motor driven in a "bipolar" mode is implemented by employing only two sense resistors and related control loops. This is so regardless of the actual number of windings of the motor.

摘要翻译： 通过独立控制的以“双极”模式驱动的多相电动机的绕组来控制PWM模式中的电流通过仅使用两个检测电阻器和相关的控制回路来实现。 无论电机的实际绕组数如何，都是如此。

公开(公告)号：US07215094B2

公开(公告)日：2007-05-08

申请号：US11381432

申请日：2006-05-03

申请人： Giuseppe Maiocchi ,  Ezio Galbiati ,  Michele Boscolo

发明人： Giuseppe Maiocchi ,  Ezio Galbiati ,  Michele Boscolo

IPC分类号： G11B21/02

CPC分类号： H02P6/182 ,  H02P25/034

摘要： A method for sensing a back electromotive force induced in a winding of a voice coil electro-mechanical actuator controlled in a discontinuous mode by alternating conduction phases to off-phases includes sensing voltage at terminals of the winding during an off-phase The winding is driven during a conduction phase immediately preceding the off-phase to invert, during a final portion of the conduction phase before entering an off-phase, a direction of flow of the current through the winding.

摘要翻译： 用于感测在不连续模式下控制的音圈机电致动器的绕组中感应到的反电动势的方法是通过将导通相交替为非相，包括在断相期间感测绕组端子处的电压。绕组被驱动 在紧邻异相之前的导通阶段期间，在进入截止相之前的导通阶段的最后部分期间，电流通过绕组的流动方向。

公开(公告)号：US06841903B2

公开(公告)日：2005-01-11

申请号：US10285362

申请日：2002-10-30

申请人： Michele Boscolo ,  Massimiliano Brambilla ,  Ezio Galbiati

发明人： Michele Boscolo ,  Massimiliano Brambilla ,  Ezio Galbiati

IPC分类号： G11B19/20 ,  H02P6/182 ,  H02P6/185 ,  H02P6/22 ,  H02K7/00

CPC分类号： G11B19/20 ,  H02P6/182 ,  H02P6/185 ,  H02P6/22

摘要： A method for detecting the position of a rotor of a DC motor with N phases having a plurality of windings, comprising the steps of connecting two of the windings between first and second prefixed voltages through to a first current path for a prefixed time, allowing the current stored in the two windings to discharge through a second current path; comparing the voltage across one of the two windings with a reference voltage and providing a control signal when the voltage is smaller in absolute value than the reference voltage, performing the above steps for each of the winding pairs of the motor; detecting the position of the rotor on the basis of the control signals obtained.

摘要翻译： 一种用于检测具有多个绕组的N相的直流电动机的转子的位置的方法，包括以下步骤：将第一和第二预定电压之间的两个绕组连接到第一电流路径以进行预定时间，从而允许 存储在两个绕组中的电流通过第二电流路径放电; 将两个绕组中的一个的电压与参考电压进行比较，并且当电压的绝对值小于参考电压时提供控制信号，对电动机的每个绕组对执行上述步骤; 基于获得的控制信号来检测转子的位置。

公开(公告)号：US20060250099A1

公开(公告)日：2006-11-09

申请号：US11381432

申请日：2006-05-03

申请人： Giuseppe Maiocchi ,  Ezio Galbiati ,  Michele Boscolo

发明人： Giuseppe Maiocchi ,  Ezio Galbiati ,  Michele Boscolo

IPC分类号： H02P25/12

CPC分类号： H02P6/182 ,  H02P25/034

摘要： A method for sensing a back electromotive force induced in a winding of a voice coil electro-mechanical actuator controlled in a discontinuous mode by alternating conduction phases to off-phases includes sensing voltage at terminals of the winding during an off-phase The winding is driven during a conduction phase immediately preceding the off-phase to invert, during a final portion of the conduction phase before entering an off-phase, a direction of flow of the current through the winding.

摘要翻译： 用于感测在不连续模式下控制的音圈机电致动器的绕组中感应到的反电动势的方法是通过将导通相交替为非相，包括在断相期间感测绕组端子处的电压。绕组被驱动 在紧邻异相之前的导通阶段期间，在进入截止相之前的导通阶段的最后部分期间，电流通过绕组的流动方向。

公开(公告)号：US06919763B2

公开(公告)日：2005-07-19

申请号：US10642394

申请日：2003-08-14

申请人： Michele Boscolo ,  Ezio Galbiati

发明人： Michele Boscolo ,  Ezio Galbiati

IPC分类号： H03F3/217 ,  H03F3/00 ,  H02K23/00 ,  H03F1/36

CPC分类号： H03F3/217

摘要： A transconductance amplifier for inductive loads and a relevant inductive load driving method, the amplifier having an input stage receiving a driving signal (set-point), a power stage connected downstream of the input stage and connected to the load and an output stage fedback on the input stage to transfer a signal associated to the load. Advantageously, the input stage comprises at least a comparator receiving on one input the driving signal and on another input the output of the output stage. A delay block is also provided between the comparator output and the power stage to delay the comparator switching. This can be obtained also by using a hysteretic comparator.

摘要翻译： 用于感性负载的跨导放大器和相关的感性负载驱动方法，放大器具有接收驱动信号（设定点）的输入级，连接在输入级下游并连接到负载的功率级，并且输出级反馈 输入级传输与负载相关联的信号。 有利地，输入级包括至少一个比较器，在一个输入端接收驱动信号，并在另一个输入端上接收输出级的输出。 在比较器输出和功率级之间还提供延迟模块以延迟比较器的切换。 这也可以通过使用滞后比较器来获得。