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    • 4. 发明申请
    • DEVICE AND METHOD FOR CONTROLLING THE ELECTRICAL CURRENT OF AN ACTUATOR
    • 用于控制致动器的电流的装置和方法
    • WO2005036296A1
    • 2005-04-21
    • PCT/US2004/012463
    • 2004-04-23
    • HONEYWELL INTERNATIONAL INC.MCMILLAN, Scott, D.MROZEK, Greg, T.
    • MCMILLAN, Scott, D.MROZEK, Greg, T.
    • G05F1/565
    • H02M7/53873G05F1/565H02M2001/0009H02M2003/1555
    • Systems and methods for providing a current control loop for an actuator. A typical system includes a current command controller (305) setting a command current, the current command controller being coupled to a drive circuit (125) used to drive the actuator and a sampling module (230) sampling a motor current of the actuator. The system also includes a summation module (310) calculating a current error based on the motor current, the current error being calculated by subtracting the motor current from the command current. The current error is used to compensate for an error in the motor current of the actuator. The sampling module can include a switch (252)and a capacitor (256) coupled in parallel with the resistor (254) when the switch is on, a charge on the capacitor being proportional to the voltage drop across the resistor. Methods for setting a maximum control current and for providing the current control loop are also illustrated.
    • 为执行器提供电流控制回路的系统和方法。 典型的系统包括设置指令电流的电流指令控制器(305),电流指令控制器耦合到用于驱动致动器的驱动电路(125)和对致动器的电动机电流进行采样的采样模块(230)。 该系统还包括一个根据电动机电流计算电流误差的求和模块(310),该电流误差是通过从指令电流中减去电机电流而计算的。 电流误差用于补偿执行机构电机电流的误差。 采样模块可以包括当开关导通时与电阻器(254)并联耦合的开关(252)和电容器(256),电容器上的电荷与电阻器两端的电压降成正比。 还示出了设置最大控制电流和提供电流控制环路的方法。
    • 10. 发明申请
    • DISTRIBUTED MONITORING AND CONTROL FLUID HANDLING SYSTEM
    • 分布式监控和控制流体处理系统
    • WO2008151174A1
    • 2008-12-11
    • PCT/US2008/065605
    • 2008-06-03
    • GRACO MINNESOTA INC.LANGE, Christopher M.SCHERER, William C.SUTTER, Fred A.MROZEK, Greg T.PARNES, Gary S.
    • LANGE, Christopher M.SCHERER, William C.SUTTER, Fred A.MROZEK, Greg T.PARNES, Gary S.
    • G01F23/00
    • G05B19/052G05B2219/1204
    • A fluid handling control/monitoring system is divided into a network of modular, intelligent components. These individual components are generally specific to a certain function within the system and contain all the intelligence necessary to perform that function without external guidance. Examples of the different types of components include but are not limited to: human-machine interface (HMI), fluid control, heater control, motor control, field-bus communications and the like. While each type of board is specialized in function, it may control several items of the same nature. For instance, a heater control may be able to control several heaters on one system. Similarly, a fluid board may have the ability to receive input from more than one flow meter and then control fluid flow of more than one point. An example might be a plural component metering and dispensing system where two fluid components have to be combined in a precise mix ratio.
    • 流体处理控制/监控系统分为模块化智能组件网络。 这些单独的组件通常特定于系统内的某个功能,并且包含在没有外部指导的情况下执行该功能所需的所有智能。 不同类型组件的示例包括但不限于:人机界面(HMI),流体控制,加热器控制,电动机控制,现场总线通信等。 虽然每种类型的板都是专门的功能,它可以控制几个相同性质的项目。 例如,加热器控制可能能够在一个系统上控制多个加热器。 类似地,流体板可以具有从多于一个流量计接收输入并且然后控制多于一个点的流体流动的能力。 一个例子可能是复数分量计量和分配系统,其中两个流体组分必须以精确的混合比组合。