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1. 发明申请

US20100244761A1 DEVICE TO SYNCHRONIZE THE CHANGE OF THE DRIVING MODE OF AN ELECTROMAGNETIC LOAD 有权
标题翻译：设备同步电磁负载驱动模式的变化
公开(公告)号：US20100244761A1
公开(公告)日：2010-09-30
申请号：US12751807
申请日：2010-03-31
申请人： Ezio Galbiati , Roberto Peritore , Michele Bartolini , Agostino Mirabelli
发明人： Ezio Galbiati , Roberto Peritore , Michele Bartolini , Agostino Mirabelli
IPC分类号： G05B11/28 , H01F27/42
CPC分类号： H02P6/08 , G11B5/022 , G11B5/5547 , H02P6/085 , H02P6/22 , H02P25/034
摘要： A device for the change of the driving mode of an electromagnetic load from a first operating mode with pulse width modulation to a second operating mode that is linear by means of switching circuits. During a first operating mode, each of two outputs has a voltage value ranging from a first reference voltage to a second reference voltage. The device adapted to synchronize a change command signal from a first operating mode to a second operating mode of the electromagnetic load with the signal representative of the flow of current circulating within the load at substantially its average value and adapted to generate a first command signal in response to the synchronization.
摘要翻译：一种用于将电磁负载的驱动模式从具有脉冲宽度调制的第一操作模式改变为通过开关电路线性化的第二操作模式的装置。在第一操作模式期间，两个输出中的每一个具有从第一参考电压到第二参考电压的电压值。该装置适于使来自第一操作模式的改变命令信号与电磁负载的第二操作模式同步，该信号表示在负载中以基本上其平均值循环的电流流，并适于产生第一命令信号响应同步。

2. 发明授权

US08471505B2 Device to synchronize the change of the driving mode of an electromagnetic load 有权
标题翻译：同步改变电磁负载驱动模式的装置
公开(公告)号：US08471505B2
公开(公告)日：2013-06-25
申请号：US12751807
申请日：2010-03-31
申请人： Ezio Galbiati , Roberto Peritore , Michele Bartolini , Agostino Mirabelli
发明人： Ezio Galbiati , Roberto Peritore , Michele Bartolini , Agostino Mirabelli
IPC分类号： H02P6/06
CPC分类号： H02P6/08 , G11B5/022 , G11B5/5547 , H02P6/085 , H02P6/22 , H02P25/034
摘要： A device for the change of the driving mode of an electromagnetic load from a first operating mode with pulse width modulation to a second operating mode that is linear by means of switching circuits. During a first operating mode, each of two outputs has a voltage value ranging from a first reference voltage to a second reference voltage. The device adapted to synchronize a change command signal from a first operating mode to a second operating mode of the electromagnetic load with the signal representative of the flow of current circulating within the load at substantially its average value and adapted to generate a first command signal in response to the synchronization.
摘要翻译：一种用于将电磁负载的驱动模式从具有脉冲宽度调制的第一操作模式改变为通过开关电路线性化的第二操作模式的装置。在第一操作模式期间，两个输出中的每一个具有从第一参考电压到第二参考电压的电压值。该装置适于使来自第一操作模式的改变命令信号与电磁负载的第二操作模式同步，该信号表示在负载中以基本上其平均值循环的电流流，并适于产生第一命令信号响应同步。

3. 发明申请

US20050068656A1 Disk drive including an auxiliary pulse width modulation (PWM) control circuit and related methods 审中-公开
标题翻译：磁盘驱动器包括辅助脉宽调制（PWM）控制电路及相关方法
公开(公告)号：US20050068656A1
公开(公告)日：2005-03-31
申请号：US10672925
申请日：2003-09-26
申请人： Alberto Salina , Roberto Peritore , Fabio Ramaioli
发明人： Alberto Salina , Roberto Peritore , Fabio Ramaioli
IPC分类号： G11B5/54 , G11B21/02 , G11B21/12
CPC分类号： G11B21/12 , G11B5/54
摘要： A disk drive may include a housing, and a rotatable data storage disk and associated disk drive motor carried by the housing for rotating the rotatable data storage disk. The disk drive may also include a movable arm and associated arm drive motor carried by the housing for moving the arm adjacent to the rotatable data storage disk. Further, at least one read/write head may be carried by the arm, and a driving circuit may be included for the arm drive motor. The driving circuit may include at least one output stage connected to a power supply for driving the arm drive motor, at least one capacitor connected to the power supply, and an auxiliary pulse width modulation (PWM) control circuit connected to the at least one capacitor for driving the at least one output stage in a PWM mode after the power supply is switched off.
摘要翻译：磁盘驱动器可以包括壳体，以及由壳体承载的旋转数据存储盘和相关联的盘驱动马达，用于旋转可旋转数据存储盘。磁盘驱动器还可以包括由壳体承载的可移动臂和相关联的臂驱动马达，用于使臂相对于可旋转数据存储盘移动。此外，至少一个读/写头可以由臂承载，并且可以包括用于臂驱动电动机的驱动电路。驱动电路可以包括至少一个输出级，其连接到用于驱动臂驱动电动机的电源，连接到电源的至少一个电容器和连接到至少一个电容器的辅助脉宽调制（PWM）控制电路用于在电源关闭之后以PWM模式驱动至少一个输出级。

4. 发明授权

US06363214B1 System for controlling the motion of an arm carrying a read/write head during load and unload operations 有权
标题翻译：用于在加载和卸载操作期间控制携带读/写头的臂的运动的系统
公开(公告)号：US06363214B1
公开(公告)日：2002-03-26
申请号：US09661754
申请日：2000-09-14
申请人： Andrea Merello , Gianluca Ventura , Roberto Peritore
发明人： Andrea Merello , Gianluca Ventura , Roberto Peritore
IPC分类号： H02P300
CPC分类号： G11B21/12 , G11B5/54
摘要： A method for controlling an electromagnetic actuator having an arm connected thereto uses a circuit that temporarily places in a high impedance state output nodes connected to a winding of the electromagnetic actuator. A detected BEMF is compared with a lower threshold and an upper threshold. Current in the electromagnetic actuator is monitored and controlled. A current pulse is provided to the electromagnetic actuator based upon the comparison of the detected BEMF with the lower and upper thresholds. The respective amplitudes of successively provided current pulses having a same polarity are progressively increased, and an amplitude of a provided current pulse having a polarity opposite a polarity of a preceding current pulse is decreased. The amplitude of the driving current pulses provided to the winding of the electromagnetic actuator advantageously adapts automatically to varying frictional conditions, or to any other cause of variation of the mechanical load of the actuator. These conditions occur when the arm moved by the electromagnetic actuator starts to slide up or flies off the parking ramp.
摘要翻译：用于控制具有与其连接的臂的电磁致动器的方法使用暂时放置在连接到电磁致动器的绕组的高阻抗状态输出节点的电路。将检测到的BEMF与下阈值和上阈值进行比较。监测和控制电磁执行器中的电流。基于检测到的BEMF与下限和上限阈值的比较，向电磁致动器提供电流脉冲。具有相同极性的连续提供的电流脉冲的相应幅度逐渐增加，并且具有与前一电流脉冲的极性相反的极性的所提供的电流脉冲的幅度减小。提供给电磁致动器的绕组的驱动电流脉冲的振幅有利地自动地适应于变化的摩擦条件或致动器的机械负载变化的任何其它原因。当电磁执行器移动的手臂开始向上滑动或从停车斜坡飞走时，会发生这些情况。

5. 发明授权

US06479954B1 Control and drive system for a single winding electromagnetic actuator employing a single multifunction operational amplifier 有权
标题翻译：采用单个多功能运算放大器的单绕组电磁执行器的控制和驱动系统
公开(公告)号：US06479954B1
公开(公告)日：2002-11-12
申请号：US09609857
申请日：2000-07-05
申请人： Roberto Peritore , Andrea Merello , Gianluca Ventura
发明人： Roberto Peritore , Andrea Merello , Gianluca Ventura
IPC分类号： H02P308
CPC分类号： H03F3/72 , G11B5/5521 , H02P25/034
摘要： A system for controlling and driving an electromagnetic actuator includes a unique operational amplifier in the regulation loop for driving the electromagnetic actuator and for monitoring, during different phases of operation, the current in the actuator and the back electromotive force. The new architecture allows for a considerable reduction of the area of integration of the system as a whole.
摘要翻译：用于控制和驱动电磁致动器的系统包括用于驱动电磁致动器的调节回路中的唯一运算放大器，并且用于在不同操作阶段期间监视致动器中的电流和反电动势。新的架构可以大大减少整个系统的整合面积。

6. 发明授权

US06463211B1 Calibration technique of a BEMF detector 有权
标题翻译： BEMF检测器的校准技术
公开(公告)号：US06463211B1
公开(公告)日：2002-10-08
申请号：US09693499
申请日：2000-10-20
申请人： Roberto Peritore , Alberto Salina , Andrea Merello , Lorenzo Papillo , Francesco Vavala , Gianluca Ventura
发明人： Roberto Peritore , Alberto Salina , Andrea Merello , Lorenzo Papillo , Francesco Vavala , Gianluca Ventura
IPC分类号： H02P500
CPC分类号： G11B5/5526
摘要： The present invention relates to the positioning of the read/write transducer heads of an hard disk (HD) in a designated landing zone when requested or when the electrical power is removed from the drive. In particularly it relates to the detection of the back electromotive force (BEMF) of the motor involved in the positioning of the read/write transducer heads. According to an embodiment of the present invention a BEMF detection circuit for a voice-coil motor operative to continually generate a signal proportionally to the velocity of said voice-coil motor comprises a algebraic summing node producing at its output the BEMF of the voice-coil motor and receiving: a first voltage proportional to the voltage across the voice-coil motor; a second voltage representing the product of a first multiplier factor and a voltage proportional to the current in the coil; a third voltage representing the product of a prefixed bias voltage Vref and a second multiplier factor; said third voltage is calibrated by a single calibration circuitry operative to calibrate said second multiplier factor in response to a calibration control signal, in order to cancel said second voltage.
摘要翻译：本发明涉及当请求时或当从驱动器移除电力时将硬盘（HD）的读/写换能器头定位在指定的着陆区中。特别地，其涉及在读/写换能器头的定位中涉及的电动机的反电动势（BEMF）的检测。根据本发明的实施例，用于音圈电机的BEMF检测电路可操作以连续地产生与所述音圈电动机的速度成比例的信号，包括代数求和节点，在其输出端产生音圈的BEMF 电机和接收：与音圈电机两端的电压成比例的第一电压; 代表第一乘数和与线圈中的电流成正比的电压的乘积的第二电压; 代表预置偏置电压Vref和第二乘数的乘积的第三电压; 所述第三电压由单个校准电路校准，所述单个校准电路用于响应于校准控制信号校准所述第二乘法器因数，以便消除所述第二电压。

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