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公开(公告)号：US06462557B1
公开(公告)日：2002-10-08
申请号：US09570874
申请日：2000-05-15
申请人： Andrea Milanesi , Stefania Chicca , Vanni Poletto , Valerio Giorgetta , Stefano Sgatti , Sergio Vigna
发明人： Andrea Milanesi , Stefania Chicca , Vanni Poletto , Valerio Giorgetta , Stefano Sgatti , Sergio Vigna
IPC分类号： G08B2100
CPC分类号： G01R31/024
摘要： A system for diagnosing a driver and detecting circuit anomalies therein includes: voltage comparator circuits for generating diagnostic logic signals, each of which indicates the existence of a corresponding type of anomaly; and a coding circuit to receive the diagnostic logic signals and to output information relating to an overall operating state of the driver. The coding circuit includes a first portion to provide at its output first logic input signals indicating the last anomaly to occur since a system reset operation. The coding circuit also includes a second portion for coding the first logic input signals. The second portion includes a sequential logic network to receive the first logic input signals and at least one second logic signal indicating the current operating phase of the driver. The second portion provides, as a function of the first and second logic signals, a stable internal state to determine the output information in the form of an N bit coded word. The N bit coded word is representative of the occurrence of an anomaly, of an absence of an anomaly in the current operating phase, or of an absence of an anomaly in any operating phase.
摘要翻译： 用于诊断驱动器并检测电路异常的系统包括：用于产生诊断逻辑信号的电压比较器电路，每个诊断逻辑信号指示存在相应类型的异常; 以及编码电路，用于接收诊断逻辑信号并输出与驾驶员的总体操作状态有关的信息。 编码电路包括第一部分，在其输出端提供第一逻辑输入信号，指示自系统复位操作以来发生的最后一个异常。 编码电路还包括用于对第一逻辑输入信号进行编码的第二部分。 第二部分包括用于接收第一逻辑输入信号的顺序逻辑网络和指示驾驶员的当前操作阶段的至少一个第二逻辑信号。 第二部分提供作为第一和第二逻辑信号的函数的稳定的内部状态，以以N位编码字的形式确定输出信息。 N位编码字表示在当前操作阶段中不存在异常或者在任何操作阶段中不存在异常的异常的发生。
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公开(公告)号：US08159172B2
公开(公告)日：2012-04-17
申请号：US12292791
申请日：2008-11-26
IPC分类号： G05B11/28
摘要： A method for controlling an electric motor by using the PWM technique including the steps of: applying to the clamps of the electric motor an electric voltage varying in time, which displays a square waveform and consists of a sequence of pulses having a uniform wave period and a variable width; adjusting the average value of the electric voltage by varying the width of the pulses; determining the overall required width variation; subdividing the overall required width variation in a determined number of partial variations, the overall sum of which is equivalent to the overall required width variation; and gradually varying the width amplitude of the pulses of the electric voltage by applying in a sequence a corresponding partial variation to each pulse, so that the difference between the width amplitude of a pulse and the width of a following pulse is equivalent to the corresponding partial variation.
摘要翻译： 一种通过使用PWM技术来控制电动机的方法，包括以下步骤：向电动机的夹具施加时间变化的电压，其显示方波，并且包括具有均匀波周期的脉冲序列，以及 一个可变宽度; 通过改变脉冲的宽度来调节电压的平均值; 确定总体所需的宽度变化; 将所需的总宽度变化细分为确定数量的部分变化，其总和等于总体所需的宽度变化; 并通过对每个脉冲施加相应的部分变化的顺序逐渐改变电压脉冲的宽度幅度，使得脉冲的宽度幅度与后续脉冲的宽度之间的差等于相应的部分 变异。
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公开(公告)号：US20090148138A1
公开(公告)日：2009-06-11
申请号：US12292791
申请日：2008-11-26
IPC分类号： H02P7/29
摘要： A method for controlling an electric motor by using the PWM technique; the control method includes the steps of: applying to the clamps of the electric motor an electric voltage varying in time, which displays a square waveform and consists of a sequence of pulses having a uniform wave period and a variable amplitude; adjusting the average value of the electric voltage applied to the clamps of the electric motor by varying the amplitude of the pulses of the electric voltage; determining, in the case of a variation of the amplitude of the pulses, the overall required amplitude variation; subdividing the overall required amplitude variation in a determined number of partial variations, the overall sum of which is equivalent to the overall required amplitude variation; and gradually varying the amplitude of the pulses of the electric voltage by applying in a sequence a corresponding partial variation to each pulse, so that the difference between the amplitude of a pulse and the amplitude of a following pulse is equivalent to the corresponding partial variation.
摘要翻译： 一种使用PWM技术控制电动机的方法; 该控制方法包括以下步骤：向电动机的夹具施加时间上变化的电压，其显示方波，并由具有均匀波周期和可变幅度的脉冲序列组成; 通过改变电压脉冲的振幅来调节施加到电动机的夹具的电压的平均值; 在所述脉冲幅度的变化的情况下，确定所需的总体幅度变化; 将确定数量的部分变化中的总要求的幅度变化细分，其总和等于总体所需的幅度变化; 并且通过对每个脉冲施加相应的部分变化的顺序逐渐改变电压脉冲的幅度，使得脉冲幅度与后续脉冲的振幅之间的差等于相应的部分变化。
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