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21.发明授权Fully digital drive system for brushless motor with voltage or current profiles read from a digital memory 失效用于无刷电机的全数字驱动系统，具有从数字存储器读取的电压或电流轮廓
公开(公告)号：US5793180A
公开(公告)日：1998-08-11
申请号：US858255
申请日：1997-05-19
申请人： Giuseppe Maiocchi , Marco Viti
发明人： Giuseppe Maiocchi , Marco Viti
CPC分类号： H02P23/0077 , G06F1/035 , H02P6/34 , Y10S388/904
摘要： Pre-defined driving profiles for the distinct phase-windings of an electronically controlled brushless motor are continuously reconstructed for each switching phase and forced in the form of a drive current or voltage on the respective windings, in synchronism with a signal indicative of the rotor position, from just a first complete sequence and at least a first sample of the successive sequence of a number of sequences, each of N samples, equal to the number of switching phases of the motor, in which is divided a complete digitized pre-defined profile. The digital samples are stored in a nonvolatile memory and that are scanned at a continuously regulated clock frequency and with varying order and direction of scanning for reconstructing the instantaneous driving profiles for all the windings.
摘要翻译： 电子控制的无刷电动机的不同相绕组的预定义的驱动配置文件为每个开关阶段连续地重构，并且与表示转子位置的信号同步地以相应的绕组上的驱动电流或电压的形式强制 ，从仅第一个完整序列和多个序列的连续序列的至少第一个样本，N个样本中的每一个等于电动机的开关相位数，其中分割了完整的数字化预定义轮廓 。 数字样本存储在非易失性存储器中，并以连续调节的时钟频率和扫描的不同顺序和方向进行扫描，以重建所有绕组的瞬时驱动曲线。
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22.发明授权Method and apparatus for synchronous driving of the phase windings of a DC motor 失效直流电机的相绕组同步驱动方法和装置
公开(公告)号：US5764020A
公开(公告)日：1998-06-09
申请号：US828671
申请日：1997-03-31
申请人： Giuseppe Maiocchi
发明人： Giuseppe Maiocchi
摘要： Synchronization of the phase switchings in driving a brushless motor with predefined excitation current profiles of substantially nonconstant value, is improved by continuously correcting the rotor position information detected by zero-cross detecting circuits with an updatable delay value. A switching delay counter is started by the raw zero-cross pulse to determine the generation of a corrected synchronization pulse. The delay counter is downloaded with a constantly updated value by monitoring the correction signal produced by a speed control loop and by incrementing or decrementing the downloaded value in the counter to minimize the correction signal.
摘要翻译： 通过用可更新的延迟值连续地校正由过零检测电路检测的转子位置信息，提高了驱动无刷电动机的相位切换与预定的基本不稳定值的激励电流分布的同步。 切换延迟计数器由原始过零脉冲开始，以确定校正的同步脉冲的产生。 延迟计数器通过监视由速度控制回路产生的校正信号并通过递增或递减计数器中下载的值来最小化校正信号，以不断更新的值被下载。
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公开(公告)号：US5397972A
公开(公告)日：1995-03-14
申请号：US208122
申请日：1994-03-08
申请人： Giuseppe Maiocchi
发明人： Giuseppe Maiocchi
摘要： A method for starting-up in a desired forward sense of rotation a multiphase, brushless, sensorless, DC motor, while limiting the extent of a possible backward rotation. First, a predetermined initial phase is excited (thereby accelerating the rotor toward an equilibrium position for that initial phase), for only a fraction of the time necessary for the accelerated rotor to travel through a nearest angular position which would determine a "zero-crossing" in the waveform of any one of the back electromotive forces (BEMFs) which are induced by the rotor on the windings of the motor. After the elapsing of this brief impulse of excitation, the sign of the BEMFs induced in the windings of the motor are digitally read thus producing a first reading. The occurrence of a first "zero-crossing" event is monitored, and, if this happens within a preset interval of time subsequent to the instant of interruption of the first excitation impulse, the optimal phase to be excited first for accelerating the motor in the desired direction is decoded through a look-up table, and the start-up process may proceed. If such a zero-crossing occurrence is not detected within said period of time, the routine is repeated by exciting a different phase, which is functionally shifted by two phase positions from the initial phase. The maximum backward rotation that may occur in the worst of cases is sensibly less than the angular distance which separates two adjacent equilibrium positions of the rotor and in practice may be of just few degrees.
摘要翻译： 一种用于以期望的正向旋转方向启动多方式，无刷，无传感器的直流电动机的方法，同时限制可能的向后旋转的程度。 首先，预定的初始阶段被激励（从而使转子朝向初始相位的平衡位置加速），只有加速转子行进通过最近的角位置所需的时间的一小部分时间，这将确定“零交叉 “在由电动机的绕组上的转子感应的反电动势（BEMF）中的任何一个的波形中。 在这种短暂的激发脉冲经过之后，在电机绕组中感应的BEMF的符号被数字读取，从而产生一读。 监视第一个“过零”事件的发生，并且如果这发生在第一激励脉冲中断之后的预定时间间隔内，则首先激励用于加速电动机中的电动机的最佳相位 期望的方向通过查找表解码，并且启动过程可以进行。 如果在所述时间段内没有检测到这样的过零点发生，则通过激励从初始相位功能上移位两个相位位置的不同相位来重复该程序。 在最坏情况下可能发生的最大反向旋转明显小于分离转子的两个相邻平衡位置的角距离，实际上可能只有几度。
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公开(公告)号：US5343127A
公开(公告)日：1994-08-30
申请号：US969693
申请日：1992-10-30
申请人： Giuseppe Maiocchi
发明人： Giuseppe Maiocchi
摘要： A method for starting-up in a desired forward sense of rotation a multiphase, brushless, sensorless, DC motor, while limiting the extent of a possible backward rotation. First, a predetermined initial phase is excited (thereby accelerating the rotor toward an equilibrium position for that initial phase), for only a fraction of the time necessary for the accelerated rotor to travel through a nearest angular position which would determine a "zero-crossing" in the waveform of any one of the back electromotive forces (BEMFs) which are induced by the rotor on the windings of the motor. After the elapsing of this brief impulse of excitation, the sign of the BEMFs induced in the windings of the motor are digitally read thus producing a first reading. The occurrence of a first "zero-crossing" event is monitored, and, if this happens within a preset interval of time subsequent to the instant of interruption of the first excitation impulse, the optimal phase to be excited first for accelerating the motor in the desired direction is decoded through a look-up table, and the start-up process may proceed. If such a zero-crossing occurrence is not detected within said period of time, the routine is repeated by exciting a different phase, which is functionally shifted by two phase positions from the initial phase. The maximum backward rotation that may occur in the worst of cases is sensibly less than the angular distance which separates two adjacent equilibrium positions of the rotor and in practice may be of just few degrees.
摘要翻译： 一种用于以期望的正向旋转方向启动多方式，无刷，无传感器的直流电动机的方法，同时限制可能的向后旋转的程度。 首先，预定的初始阶段被激励（从而使转子朝向初始相位的平衡位置加速），只有加速转子行进通过最近的角位置所需的时间的一小部分时间，这将确定“零交叉 “在由电动机的绕组上的转子感应的反电动势（BEMF）中的任何一个的波形中。 在这种短暂的激发脉冲经过之后，在电机绕组中感应的BEMF的符号被数字读取，从而产生一读。 监视第一个“过零”事件的发生，并且如果这发生在第一激励脉冲中断之后的预定时间间隔内，则首先激励用于加速电动机中的电动机的最佳相位 期望的方向通过查找表解码，并且启动过程可以进行。 如果在所述时间段内没有检测到这样的过零点发生，则通过激励从初始相位功能上移位两个相位位置的不同相位来重复该程序。 在最坏情况下可能发生的最大反向旋转明显小于分离转子的两个相邻平衡位置的角距离，实际上可能只有几度。
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