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1.发明申请PREVENTION OF CONCURRENT PWM OR PSM COMMUTATIONS OF POWER SIGNALS DRIVING A VOICE COIL MOTOR (VCM) TO REDUCE S/N RATIO DEGRADATION OF LOW LEVEL SIGNAL LINES OF A R/W HEAD 有权防止电力信号的并行PWM或PSM通信驱动语音线圈电机（VCM），以降低R / W头的低电平信号线的S / N比降低公开(公告)号：US20070296362A1
公开(公告)日：2007-12-27
申请号：US11760185
申请日：2007-06-08
CPC分类号： G11B5/02 , G11B5/022 , G11B2005/001 , H02P25/034
摘要： A method of preventing concurrent or quasi-concurrent commutations of a pair of phase shift modulation (PSM) drive signals of an output bridge stage driving an electrical load includes establishing a threshold level of a programmed current level to be transmitted though the electrical load. The method also includes, if the programmed current level is lower than the threshold level, enhancing a time offset between commutation edges of the pair of PSM drive signals by a minimum time.
摘要翻译： 一种防止驱动电负载的输出桥接级的一对相移调制（PSM）驱动信号的同时或准并行换向的方法包括建立通过电负载传输的编程电流电平的阈值电平。 该方法还包括，如果编程的电流电平低于阈值电平，则将该对PSM驱动信号的换向边沿之间的时间偏移增加最小时间。
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2.发明授权Prevention of concurrent PWM or PSM commutations of power signals driving a voice coil motor (VCM) to reduce S/N ratio degradation of low level signal lines of a R/W head 有权防止驱动音圈电机（VCM）的电源信号同时进行PWM或PSM换向，以降低R / W磁头低电平信号线的S / N比降低公开(公告)号：US08044619B2
公开(公告)日：2011-10-25
申请号：US11760185
申请日：2007-06-08
IPC分类号： H02K5/00
CPC分类号： G11B5/02 , G11B5/022 , G11B2005/001 , H02P25/034
摘要： A method of preventing concurrent or quasi-concurrent commutations of a pair of phase shift modulation (PSM) drive signals of an output bridge stage driving an electrical load includes establishing a threshold level of a programmed current level to be transmitted though the electrical load. The method also includes, if the programmed current level is lower than the threshold level, enhancing a time offset between commutation edges of the pair of PSM drive signals by a minimum time.
摘要翻译： 一种防止驱动电负载的输出桥接级的一对相移调制（PSM）驱动信号的同时或准并行换向的方法包括建立通过电负载传输的编程电流电平的阈值电平。 该方法还包括，如果编程的电流电平低于阈值电平，则将该对PSM驱动信号的换向边沿之间的时间偏移增加最小时间。
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3.发明授权Method for sensing the back electromotive force induced in the winding of a voice coil motor 有权用于感测在音圈电机的绕组中感应的反电动势的方法公开(公告)号：US07215094B2
公开(公告)日：2007-05-08
申请号：US11381432
申请日：2006-05-03
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。
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4.发明申请MANAGEMENT APPARATUS OF A ROTATING MOTOR AND AN ANNEXED LOAD DURING POWER LOSS 有权旋转电机的管理设备和电力损失期间的附加负载公开(公告)号：US20120161678A1
公开(公告)日：2012-06-28
申请号：US13330410
申请日：2011-12-19
申请人： Giuseppe Maiocchi , Ezio Galbiati
发明人： Giuseppe Maiocchi , Ezio Galbiati
IPC分类号： H02P7/00
CPC分类号： G11B21/12 , G11B5/54 , G11B19/2081
摘要： A management apparatus is described of a rotating motor and a load during power loss; the apparatus comprises a first switching circuit coupled with the rotating motor and a controller of said first switching circuit. The controller is configured to drive the first switching circuit so as to convert a back-electromotive force voltage developed in the rotating motor into a power supply voltage for the load. The first switching circuit is driven in accordance with a first duty cycle. The apparatus comprises a second switching circuit coupled with the load and driven in accordance with a second duty cycle. The controller is configured to vary said first and said second duty cycles to keep the power supply voltage for the load above or equal to a threshold voltage.
摘要翻译： 在停电期间描述了旋转电动机和负载的管理装置; 该装置包括与旋转电动机耦合的第一开关电路和所述第一开关电路的控制器。 控制器被配置为驱动第一开关电路，以将在旋转电动机中产生的反电动势电压转换为负载的电源电压。 第一开关电路根据第一占空比被驱动。 该装置包括与负载耦合并根据第二占空比驱动的第二开关电路。 控制器被配置为改变所述第一和所述第二占空比以将负载的电源电压保持在高于或等于阈值电压。
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5.发明申请METHOD FOR SENSING THE BACK ELECTROMOTIVE FORCE INDUCED IN THE WINDING OF A VOICE COIL MOTOR 有权用于感测在电话线圈电机绕组中产生的反电动力的方法公开(公告)号：US20060250099A1
公开(公告)日：2006-11-09
申请号：US11381432
申请日：2006-05-03
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。
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6.发明授权System for increasing the definition in converting a digital datum in a PWM signal for driving a full-bridge output stage 失效用于增加在PWM信号中转换数字数据以驱动全桥输出级的定义的系统公开(公告)号：US06310912B1
公开(公告)日：2001-10-30
申请号：US09112999
申请日：1998-07-10
申请人： Giuseppe Maiocchi , Ezio Galbiati
发明人： Giuseppe Maiocchi , Ezio Galbiati
IPC分类号： H03K908
CPC分类号： H03M1/825 , H02M7/53873
摘要： The definition of conversion of a digital value in a PWM signal using an N-bit up/down counter is improved by increasing the dimension of the input data to N+2 bits. This is done using the two Lsb's of the N+2 input data for selecting one among three intermediate levels between two consecutive values of an N-bit dynamic, according to a predefined table of combinations. The converter may still use an N-bit comparator. The system is particularly useful in driving a multi-phase brushless DC motor with each phase-winding singularly driven through a full-bridge output stage.
摘要翻译： 通过将输入数据的尺寸增加到N + 2位，可以提高使用N位向上/向下计数器在PWM信号中转换数字值的定义。 这是通过使用N + 2个输入数据的两个Lsb进行的，用于根据预定义的组合表来选择N位动态的两个连续值之间的三个中间级之一。 转换器仍然可以使用N位比较器。 该系统在驱动具有通过全桥输出级单相驱动的每个相绕组的多相无刷直流电动机时特别有用。
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7.发明授权公开(公告)号：US08659250B2
公开(公告)日：2014-02-25
申请号：US13330410
申请日：2011-12-19
申请人： Giuseppe Maiocchi , Ezio Galbiati
发明人： Giuseppe Maiocchi , Ezio Galbiati
IPC分类号： H02P6/18
CPC分类号： G11B21/12 , G11B5/54 , G11B19/2081
摘要： A management apparatus is described of a rotating motor and a load during power loss; the apparatus comprises a first switching circuit coupled with the rotating motor and a controller of said first switching circuit. The controller is configured to drive the first switching circuit so as to convert a back-electromotive force voltage developed in the rotating motor into a power supply voltage for the load. The first switching circuit is driven in accordance with a first duty cycle. The apparatus comprises a second switching circuit coupled with the load and driven in accordance with a second duty cycle. The controller is configured to vary said first and said second duty cycles to keep the power supply voltage for the load above or equal to a threshold voltage.
摘要翻译： 在停电期间描述了旋转电动机和负载的管理装置; 该装置包括与旋转电动机耦合的第一开关电路和所述第一开关电路的控制器。 控制器被配置为驱动第一开关电路，以将在旋转电动机中产生的反电动势电压转换为负载的电源电压。 第一开关电路根据第一占空比被驱动。 该装置包括与负载耦合并根据第二占空比驱动的第二开关电路。 控制器被配置为改变所述第一和所述第二占空比以将负载的电源电压保持在高于或等于阈值电压。
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公开(公告)号：US5731670A
公开(公告)日：1998-03-24
申请号：US624697
申请日：1996-03-27
申请人： Ezio Galbiati , Giuseppe Maiocchi
发明人： Ezio Galbiati , Giuseppe Maiocchi
摘要： A circuit and method for driving a brushless sensorless direct current (DC) motor (2), using the steps of: at the beginning of each phase, driving the motor in PWM mode; monitoring the duration (Tc) between successive zero-crossings of the back electromotive force (BEMF), and accordingly predicting the next zero-crossing; and before the next predicted zero-crossing, switching to a linear driving mode only until the actual zero-crossing of the BEMF.
摘要翻译： 一种用于驱动无刷无传感器直流（DC）电动机（2）的电路和方法，其特征在于使用以下步骤：在每相开始时以PWM模式驱动电动机; 监测反电动势（BEMF）的连续过零点之间的持续时间（Tc），并据此预测下一个过零点; 并且在下一个预测过零点之前，切换到线性驱动模式，直到BEMF的实际过零。
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9.发明授权Method for controlling a DC motor and relative open-loop voltage mode controller 有权用于控制直流电动机和相对开环电压模式控制器的方法公开(公告)号：US07049781B2
公开(公告)日：2006-05-23
申请号：US10918658
申请日：2004-08-12
IPC分类号： G05B11/42
CPC分类号： H02P7/28 , G11B5/5547
摘要： A method for controlling in an open-loop voltage mode a DC motor driven through a power amplifier includes generating a control voltage for the DC motor to be input to the power amplifier based upon a difference between an external command and a correction signal, and amplifying the control voltage for generating a replica of an output of the power amplifier. A model of the DC motor is defined based upon electrical parameters of the DC motor. The method further includes estimating current flowing in the DC motor based upon the replica of the output of the power amplifier and the model of the DC motor, and generating the correction signal proportional to the estimated current.
摘要翻译： 用于以开环电压模式控制通过功率放大器驱动的直流电动机的方法包括：基于外部命令和校正信号之间的差异，产生要输入到功率放大器的直流电动机的控制电压，以及放大 用于产生功率放大器的输出的副本的控制电压。 基于直流电机的电气参数定义直流电动机的型号。 该方法还包括基于功率放大器的输出和直流电动机的模型的副本估算直流电动机中的电流，并产生与估计电流成比例的校正信号。
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10.发明授权公开(公告)号：US06566838B2
公开(公告)日：2003-05-20
申请号：US09812715
申请日：2001-03-20
申请人： Giuseppe Maiocchi
发明人： Giuseppe Maiocchi
IPC分类号： G05B106
摘要： The device is for driving and controlling a rotation motor and a voice coil motor for a hard disk drive system that includes a disk and an arm carrying a read/write head to be positioned with respect thereto. A duty-cycle control loop including a current sensing circuit is connected to the voice coil motor, and an arm position control loop including a speed detection circuit is also connected to the voice coil motor. The duty-cycle control loop and the arm position control loop are digitally implemented by a DSP as a function of digital data representing a first analog signal generated by the current sensing circuit representative of current conducting in a winding of the voice coil motor, and a second analog signal generated by the speed detection circuit representative of an instant speed of the voice coil motor.
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