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1.发明授权Method and apparatus for operating polyphase DC motors using a PWM chopping signal in zero crossing determination 失效用于使用PWM斩波信号过零点判定操作多相直流电动机的方法和设备
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公开(公告)号：EP0577367B1
公开(公告)日：1997-09-17
申请号：EP93305033.8
申请日：1993-06-28
IPC分类号： H02P7/00
CPC分类号： H03K17/6871 , H02P7/04 , H03K17/063 , H03K17/166 , Y10S388/91
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3.发明公开Digital to analog converter with precise linear output for both positive and negative digital input values 失效数字/模拟转换器，具有一个精确的线性输出，对于正的和负的数字输入变量。
公开(公告)号：EP0558243A2
公开(公告)日：1993-09-01
申请号：EP93301262.7
申请日：1993-02-22
CPC分类号： H03M1/745
摘要： A circuit and method for converting a digital number to an analog output signal, wherein the most significant bit or "sign" bit of the digital number is used for switching the accumulated currents of the other data bits to a chain of operational amplifiers employing feedback resistors for conversion into an output voltage of magnitude and sign corresponding to the input digital number. A decoding circuit and method enables the circuit to present an output voltage corresponding to the two's-complement of the input digital number.
摘要翻译： 的电路和方法，用于在模拟输出信号的数字数转换成，worin最显著位或“符号”的数字数的位被用于切换的其他数据位的累积电流的运算放大器采用反馈电阻器的链 用于转换成在幅值的输出电压并签署对应于输入数字号码。 的解码电路和方法能够呈现在输出电压对应于输入数字值的二进制补码的电路。
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公开(公告)号：EP0528658A1
公开(公告)日：1993-02-24
申请号：EP92307450.4
申请日：1992-08-14
CPC分类号： G01R19/0023
摘要： A circuit for sensing the current delivered to a load, or multiple loads, such presented by a polyphase DC motor, without significantly dissipating the energy delivered to the load, has a predriver circuit (30,31,32) and a power delivery circuit (40,41,42) for each load. The predriver circuit is connected in a series path between a voltage source and a control element of the power delivery circuit, and the power delivery circuit is connected between a connection node and a respective one of the loads. A sensing element (49) is connected in a series path between the source of voltage and the power delivery circuit connection node. In a preferred embodiment, the sensing element is a resistor, the predriver circuit is a PNP transistor, and the power delivery circuit is an NPN transistor. The PNP and NPN transistors are connected to form a pseudo-Darlington transistor pair, with the collectors of the NPN transistors interconnected to enable a single sense resistor to be used to sense the current in each of the loads.
摘要翻译： 用于感测传送到负载的电流或由多相直流电动机呈现的多个负载而不显着耗散输送到负载的能量的电路具有预驱动电路（30,31,32）和电力输送电路（ 40,41,42）。 预驱动电路连接在电源和电力输送电路的控制元件之间的串联路径中，并且电力输送电路连接在连接节点和相应负载之间。 感测元件（49）连接在电压源和电力输送电路连接节点之间的串联路径中。 在优选实施例中，感测元件是电阻器，预驱动电路是PNP晶体管，功率输出电路是NPN晶体管。 PNP和NPN晶体管被连接以形成伪达林顿晶体管对，NPN晶体管的集电极被互连，使得能够使用单个检测电阻来感测每个负载中的电流。
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5.发明授权Method and apparatus for resynchronizing a moving rotor of a polyphase DC motor 失效用于重新同步的多相直流电动机的方法和设备
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公开(公告)号：EP0577367A3
公开(公告)日：1995-05-17
申请号：EP93305033.8
申请日：1993-06-28
IPC分类号： H02P7/00
CPC分类号： H03K17/6871 , H02P7/04 , H03K17/063 , H03K17/166 , Y10S388/91
摘要： A high side driver circuit for controlling the turnoff slew rate to an inductor of a motor is presented. The inductor is selectively connected between a supply voltage on a high side and a reference potential on a low side. The driver circuit has a power transistor having a current control path connected in series between the high side of the inductor and the supply voltage to connect selectively the inductor to the supply voltage. An amplifier has an output connected to a control element of the power transistor. A capacitor connected between a non-inverting input of the amplifier and the reference potential and a current source connected between the non-inverting input of the amplifier and the reference potential are switchably connected between the supply voltage and the non-inverting input of the amplifier for turning on and off the circuit. A feedback path is connected between the high side of the coil and an inverting input of the amplifier. A method for controlling the high side driver turnoff slew rate to an inductor of a motor is presented. The inductor is selectively connected between a supply voltage on a high side and a reference potential on a low side is also presented. The method includes comparing a voltage on a capacitor with a voltage on a high side of the inductor. The capacitor is discharged at a constant rate when the drive to the inductor is turned-off. A voltage derived from the compared voltages is applied to control the current supplied to the high side of the inductor.
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7.发明公开Automatic adjustment of commutation delay for brushless DC motor 无效Automatische Einstellung derKommutierungsverzögerungfüreinenbürstenlosenGleichstrommotor。
公开(公告)号：EP0589630A1
公开(公告)日：1994-03-30
申请号：EP93307351.2
申请日：1993-09-17
IPC分类号： H02P6/02
摘要： A circuit and method are provided for automatically adjusting a commutation delay from events indicating a position of a polyphase dc motor. The circuit includes a driver to supply drive current to selected stator coils of said motor. A sequencer is connected to control the driver to apply drive current to selected motor coils to rotate the motor. Motor position detecting circuitry is connected to detect the events indicating the position of the motor. A commutation delay circuit is connected to increment the sequencer in response to the detection of the events indicating the position of the motor detected by the motor position detecting circuitry. A circuit for adjusting the delay of said commutation delay circuit between each event and each sequencer commutation provides optimum motor commutation for maximum power efficiency.
According to the method, drive current is supplied to selected stator coils of said motor in predetermined commutated sequences to rotate the motor. Events are detected indicating the position of the motor, and the delay between each position indicating event and each commutation sequence is automatically adjusted to provide optimum motor commutation for maximum power efficiency.摘要翻译： 提供了一种电路和方法，用于根据指示多相直流电动机的位置的事件自动调整换向延迟。 电路包括驱动器，用于向所述电机的选定的定子线圈提供驱动电流。 连接音序器以控制驱动器，以将驱动电流施加到选定的电动机线圈以使电动机旋转。 连接电机位置检测电路，检测表示电机位置的事件。 连接换向延迟电路以响应于检测到由电动机位置检测电路检测到的电动机的位置的事件的检测来增加定序器。 用于调整每个事件和每个定序器换向之间的所述换向延迟电路的延迟的电路为最大功率效率提供了最佳的电机换向。 根据该方法，以预定的换向顺序将驱动电流提供给所述电动机的选定定子线圈，以使电动机旋转。 检测到指示电机的位置的事件，并且自动调整每个位置指示事件和每个换向顺序之间的延迟，以提供最佳的电动机换向以实现最大功率效率。
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公开(公告)号：EP0577367A2
公开(公告)日：1994-01-05
申请号：EP93305033.8
申请日：1993-06-28
IPC分类号： H02P7/00
CPC分类号： H03K17/6871 , H02P7/04 , H03K17/063 , H03K17/166 , Y10S388/91
摘要： A high side driver circuit for controlling the turnoff slew rate to an inductor of a motor is presented. The inductor is selectively connected between a supply voltage on a high side and a reference potential on a low side. The driver circuit has a power transistor having a current control path connected in series between the high side of the inductor and the supply voltage to connect selectively the inductor to the supply voltage. An amplifier has an output connected to a control element of the power transistor. A capacitor connected between a non-inverting input of the amplifier and the reference potential and a current source connected between the non-inverting input of the amplifier and the reference potential are switchably connected between the supply voltage and the non-inverting input of the amplifier for turning on and off the circuit. A feedback path is connected between the high side of the coil and an inverting input of the amplifier.
A method for controlling the high side driver turnoff slew rate to an inductor of a motor is presented. The inductor is selectively connected between a supply voltage on a high side and a reference potential on a low side is also presented. The method includes comparing a voltage on a capacitor with a voltage on a high side of the inductor. The capacitor is discharged at a constant rate when the drive to the inductor is turned-off. A voltage derived from the compared voltages is applied to control the current supplied to the high side of the inductor.摘要翻译： 用于在电动机的感应器控制关断的转换速率到高侧驱动器电路被呈现。 电感器选择性地连接在高侧的电源电压和低侧的基准电位之间。 该驱动器电路具有电感器的高侧和电源电压以选择性地将电感器连接到所述电源电压之间串联连接的电流控制路径的功率晶体管。 放大器具有连接到功率晶体管的控制元件输出。 连接在放大器的非反相输入端与基准电位以及连接在所述放大器的所述非反相输入端和参考电势之间的电流源之间的电容器被可切换地连接在电源电压和放大器的非反相输入端之间 用于接通和关断电路。 反馈路径被连接在线圈的高压侧之间和反相放大器的输入端。 提出一种用于在电动机的感应器控制高侧驱动器关断转换速率方法。 电感器选择性地连接在高侧的电源电压和低侧的基准电位之间从而被呈现。 该方法包括在一个电容器上的电压与所述电感器的高压侧的电压进行比较。 所述电容器被以恒定速率当驱动到所述电感器被关断放电。 从相比应用电压得到的电压是控制提供给电感器的高压侧的电流。
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公开(公告)号：EP0572162A2
公开(公告)日：1993-12-01
申请号：EP93303875.4
申请日：1993-05-19
摘要： A circuit for providing drive current to a coil of a motor uses a sensefet current sensing device having a sense node and a source node. The source node is connected to deliver current to the coil, wherein a "sense" current proportional to said delivered current is produced on the sense node. An amplifier is connected to sense a voltage between said sense and source nodes to produce an output voltage to force a voltage on the sense node to be the same as a voltage on the source node. A pass element is connected to route said "sense" current to an output node. The circuit produces an output that is suitable for use as a feedback signal in a motor control system.
摘要翻译： 用于向电动机的线圈提供驱动电流的电路使用具有感测节点和源节点的感测电流感测装置。 源节点被连接以将电流传递到线圈，其中在感测节点上产生与所述传递电流成比例的“感测”电流。 连接放大器以感测所述感测和源节点之间的电压，以产生输出电压，以迫使感测节点上的电压与源节点上的电压相同。 连接传递元件以将所述“感测”电流路由到输出节点。 该电路产生适合用作电机控制系统中的反馈信号的输出。
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10.发明公开
公开(公告)号：EP0572161A2
公开(公告)日：1993-12-01
申请号：EP93303873.9
申请日：1993-05-19
CPC分类号： H03L7/095 , H03L7/107 , Y10S388/911 , Y10S388/912
摘要： A circuit automatically changes the gain in a PLL for driving a motor of the type having a motor speed signal that indicates the speed of motor rotation. The circuit includes a phase detector for sensing a phase difference between the motor speed signal and a reference frequency and for producing an output signal of duration proportional to the sensed phase difference. A counter counts clock pulses throughout the duration of the output signal, and a motor driving circuit drives the motor in response to the count reached by the counter. A source of clock pulses provides clock signals at first and second frequencies, the second frequency being lower than the first frequency, and a lock range sense circuit produces a sense signal output that indicates when the PLL is within a predetermined phase difference range. A circuit responsive to the sense signal output selectively applies the first frequency to clock the counter when the PLL is within the predetermined phase difference range, and to apply the second frequency to clock the counter when the PLL is operating outside of the predetermined phase difference range.
摘要翻译： 电路自动改变用于驱动具有指示电动机旋转速度的电动机速度信号的类型的电动机的PLL中的增益。 电路包括用于感测电动机速度信号和参考频率之间的相位差的相位检测器，并用于产生与检测到的相位差成比例的持续时间的输出信号。 计数器在输出信号的持续时间内对时钟脉冲进行计数，电机驱动电路根据计数器达到的计数来驱动电机。 时钟脉冲源在第一和第二频率提供时钟信号，第二频率低于第一频率，锁定范围读出电路产生一个感测信号输出，指示PLL何时在预定的相位差范围内。 响应于感测信号输出的电路选择性地施加第一频率以在PLL处于预定相位差范围内时对计数器进行计时，并且当PLL在预定相位差范围外运行时施加第二频率来计时计数器 。 在用于驱动具有指示电动机旋转速度的电动机速度信号的类型的电动机的用于自动改变PLL的增益的方法中，与电动机速度信号和参考频率之间的相位差成比例的持续时间的信号是 并且计数器能够在与相位差成比例的持续时间期间对时钟脉冲进行计数。 电机以相对计数器计数的速度驱动。 如果PLL在预定的相位差范围内，则将计时器的时钟脉冲的频率控制在预定相位差范围内的第一频率，并且如果PLL在预定相位差范围之外，则时钟脉冲的频率到 计数器被控制在低于所述第一频率的第二频率。
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