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    1/8th and 1/16th micro-stepping motor drive software architecture
    3.
    发明授权
    1/8th and 1/16th micro-stepping motor drive software architecture 失效
    1/8和1/16微步进电机驱动软件架构

    公开(公告)号：US06597147B2

    公开(公告)日：2003-07-22

    申请号：US09752161

    申请日：2000-12-29

    申请人： Yanqing Li ,  Luu T. Pham

    发明人： Yanqing Li ,  Luu T. Pham

    IPC分类号： H02P800

    CPC分类号： H02P8/22

    摘要： A method of controlling a microstepping motor is disclosed. Logic circuitry is initialized by a microcontroller. A logic sequence to determine a motor use profile, a system profile, and a program flow is performed, followed by a step sequence to establish the timing pattern of electrical impulses to be directed to an integrated circuit. A predetermined acceleration table is then accessed to implement acceleration. The logic circuit returns a delay constant from the acceleration table and places a set of data relative to the delay constant in one or more registers. A timing sequence is delivered to the integrated circuit that includes a set of interrupt service routines corresponding to a state of the motion profile. Each one of the interrupt service routines reloads a timer with a next delay constant and sends the next delay constant to the integrated circuit before updating the step count.

    摘要翻译： 公开了一种控制微步进电动机的方法。 逻辑电路由微控制器初始化。 执行用于确定电动机使用曲线，系统配置文件和程序流程的逻辑序列，随后是步骤序列以建立要被引导到集成电路的电脉冲的定时模式。 然后访问预定加速度表以实现加速。 逻辑电路从加速度表返回延迟常数，并在一个或多个寄存器中放置一组相对于延迟常数的数据。 定时序列被传送到集成电路，该集成电路包括与运动曲线的状态对应的一组中断服务程序。 每个中断服务程序重新加载具有下一个延迟常数的定时器，并在更新步数之前将下一个延迟常数发送到集成电路。

    Low cost 1/8th, 1/16th micro-stepping motor drive system
    6.
    发明授权
    Low cost 1/8th, 1/16th micro-stepping motor drive system 失效
    低成本1/8，1/16微步进电机驱动系统

    公开(公告)号：US06414460B1

    公开(公告)日：2002-07-02

    申请号：US09752174

    申请日：2000-12-29

    申请人： Yanqing Li ,  Luu T. Pham ,  Mark E. Sasso

    发明人： Yanqing Li ,  Luu T. Pham ,  Mark E. Sasso

    IPC分类号： G05B1940

    CPC分类号： G05B19/40 ,  G05B2219/41326

    摘要： The invention is a low-cost stepper motor drive system comprising a microstepping motor and a logic circuit. The logic circuit includes two integrated circuits for controlling one or more phases of the microstepping motor. Each one of the integrated circuits is a motor driver capable of producing up to sixteen microsteps per full step. Further, each one of the integrated circuits takes a set of analog/digital bits and a phase bit as input. Additionally, within the logic circuit, there is included a microcontroller for controlling the microstepping motor. The microcontroller comprises six control bits, which direct the controller in outputting a set of step sequences to the integrated circuits. The microcontroller can run in one of two program modes: a stand-alone mode which utilizes two profile bits to select one of a set of four slew velocities and which will accelerate the microstepping motor then slew at a preprogrammed velocity as selected by the two profile bits; and, a pulse controlled mode, wherein the motor velocity of the microstepping motor is directly related to an input pulse signal wherein each time the microcontroller receives the input pulse signal the microcontroller will output a step to the integrated circuits. The logic circuit further includes a driver circuit for driving current through each one of the motor phases, and two snubber circuits operatively located between the outputs of each one of the motor phases of each integrated circuit for stabilizing the voltage level of the logic circuit.

    摘要翻译： 本发明是一种低成本步进电动机驱动系统，其包括微步进电动机和逻辑电路。 逻辑电路包括用于控制微步进电机的一个或多个相的两个集成电路。 每个集成电路都是一个电机驱动器，能够在每个步骤中产生高达十六个微步。 此外，每个集成电路采用一组模拟/数字位和相位作为输入。 此外，在逻辑电路中，包括用于控制微步进电动机的微控制器。 微控制器包括六个控制位，其引导控制器向集成电路输出一组步进序列。 微控制器可以以两种程序模式之一运行：独立模式，其使用两个配置位来选择一组四个压摆速度，并且这将加速微步进电动机，然后以预编程的速度旋转，由两个配置文件选择 位 以及脉冲控制模式，其中微步进电动机的电动机速度与输入脉冲信号直接相关，其中每当微控制器接收到输入脉冲信号时，微控制器将向集成电路输出一步。 逻辑电路还包括用于驱动通过电动机相中的每一个的电流的驱动器电路和可操作地位于每个集成电路的每个电动机相的输出之间的两个缓冲电路，用于稳定逻辑电路的电压电平。