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    • 1. 发明授权
    • Pneumatic control system
    • 气动控制系统
    • US5642271A
    • 1997-06-24
    • US521702
    • 1995-08-31
    • Robert C. Henderson
    • Robert C. Henderson
    • G01N30/32F15C3/00G01N30/28G05B11/28G05B11/36G05B11/58G05B13/02G05D7/06B01D15/08H02J1/00
    • G05B11/58G01N30/28
    • An improved pneumatic control system suitable for use in providing servo control of one or more active devices in an analytical instrument includes a series pass element that effects partial regulation of an unregulated voltage to remove any high frequency supply voltage variations (including but not limited to a ripple component), but need not regulate the low frequency voltage variations, the effects of which are compensated by a loop gain compensation scheme operable in a servo control loop. A digital signal processor employed in the servo control loop uses a voltage sense signal representative of the regulated supply line voltage to generate a correcting term for use in a proportional integral derivative (PID) control algorithm operating in control loop firmware. The correcting term causes an inverse proportional change in the control loop gain. The duty cycle of the drive signal provided to the active device is accordingly modulated, when necessary, to account for changes indicated by the voltage sense signal. The power in the drive signal is therefore made independent of variations in the regulated supply line voltage. As a result, the active device is operated with greater efficiency and accuracy.
    • 适用于在分析仪器中提供一个或多个有源器件的伺服控制的改进的气动控制系统包括串联通过元件,其实现对未调节电压的部分调节以去除任何高频电源电压变化(包括但不限于 纹波分量),但不需要调节低频电压变化,其影响由在伺服控制环路中可操作的环路增益补偿方案来补偿。 在伺服控制回路中使用的数字信号处理器使用表示经调节的电源线电压的电压检测信号来产生用于在控制回路固件中操作的比例积分微分(PID)控制算法中的校正项。 校正项导致控制环增益的反比例变化。 因此,必要时调制提供给有源器件的驱动信号的占空比以考虑由电压检测信号指示的变化。 因此,驱动信号中的功率与调节的电源线电压的变化无关。 结果,有源器件以更高的效率和精度工作。
    • 2. 发明授权
    • Pneumatic control system for a fuel burning apparatus or the like
    • 燃料燃烧装置的气动控制系统等
    • US3829011A
    • 1974-08-13
    • US36209273
    • 1973-05-21
    • ROBERTSON CONTROLS CO
    • SCOTT D
    • F23N1/00G05B11/58
    • F23N1/00G05B11/58
    • This disclosure relates to a pneumatic control system for a clothes dryer wherein the flow of fuel to the main burner means is pneumatically controlled in such a manner that the ignition means for the main burner means must be first pneumatically actuated before the pneumatic control system will pneumatically open the fuel supply means to the main burner means, the control system including a pneumatically operated logic ''''memory'''' unit to assure that the ignition means is always pneumatically operated before the main burner means can be pneumatically operated to its on condition by a pneumatically operated ''''nand'''' unit each time there is a requirement to turn on the main burner means. The ''''memory'''' unit is prevented from transmitting atmosphere therethrough when being switched by its setting signal.
    • 本公开涉及一种用于干衣机的气动控制系统,其中向主燃烧器装置的燃料流动被气动控制,使得在气动控制系统气动之前必须首先气动地启动主燃烧器装置的点火装置 将燃料供给装置打开到主燃烧器装置,该控制系统包括气动操作的逻辑“存储器”单元,以确保点火装置总是气动操作的,在主燃烧器装置可以通过气动操作气动操作到其打开状态 “nand”单位每次都要求打开主燃烧器的方法。 当通过其设置信号切换时,防止“存储器”单元传输大气。