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    • 8. 发明授权
    • Vibration isolation system
    • 隔振系统
    • US07817243B2
    • 2010-10-19
    • US10822139
    • 2004-04-12
    • Marcel François HeertjesJan-Gerard Cornelis Van Der Toorn
    • Marcel François HeertjesJan-Gerard Cornelis Van Der Toorn
    • G03B27/42
    • F16F15/02G03F7/709
    • A vibration isolation system isolates a body from its surroundings with respect to vibrations. The vibration isolation system includes active isolator devices that isolate and damp the body in unstable directions. However, such active isolators may exert damping forces not only in the unstable direction, but simultaneously in other stable directions due to mechanical coupling of the stable and unstable directions. As a result the damping and isolation in the other stable directions may be deteriorated due to the active isolation and damping. Employing modal decoupling, i.e. decomposing any vibration into independent directions, and isolating and damping in the independent directions, enables compensation of any vibration in an unstable direction without influencing the isolation and damping performance in any other, possibly stable, direction.
    • 振动隔离系统将身体与其周围环境相隔离。 隔振系统包括主动隔离装置,可在不稳定的方向隔离和潮湿身体。 然而,这种有源隔离器不仅可以在不稳定的方向施加阻尼力,而且可以由于稳定和不稳定方向的机械耦合而在其它稳定的方向上施加阻尼力。 结果,由于主动隔离和阻尼,其它稳定方向的阻尼和隔离可能会恶化。 采用模态去耦,即将任何振动分解为独立的方向,以及在独立方向上进行隔离和阻尼,可以补偿不稳定方向上的任何振动,而不会影响任何其他可能稳定的方向的隔离和阻尼性能。
    • 9. 发明授权
    • Lithographic apparatus and control system
    • 平版印刷设备和控制系统
    • US08373849B2
    • 2013-02-12
    • US12580328
    • 2009-10-16
    • Marcel François Heertjes
    • Marcel François Heertjes
    • G03B27/58G03B27/62G03B27/42G03B27/32
    • G03F7/70758G03F7/70525
    • A control system to control a position quantity of a movable object in dependency of signals provided by a sensor representing an actual position quantity of the moveable object, the control system being configured to provide a drive signal to an actuator which is able to apply forces to the moveable object, the control system including a set-point generator to provide a reference signal; a subtractor to provide an error signal, the error signal being the difference between the reference signal and the signals provided by the sensor; a control unit to provide a drive signal to the actuator in dependency of the error signal, wherein the control unit comprises a nonlinear controller to improve a low-frequency disturbance suppression, and wherein the control unit further includes a compensator to at least partially compensate the deterioration of the high-frequency behavior caused by the nonlinear controller.
    • 一种控制系统,用于根据表示可移动物体的实际位置量的传感器提供的信号来控制可移动物体的位置量,所述控制系统被配置为向能够施加力的致动器提供驱动信号 所述可移动物体,所述控制系统包括设定点发生器以提供参考信号; 提供误差信号的减法器,误差信号是参考信号和由传感器提供的信号之间的差; 控制单元,用于根据所述误差信号向所述致动器提供驱动信号,其中所述控制单元包括非线性控制器以改善低频干扰抑制,并且其中所述控制单元还包括补偿器,以至少部分地补偿 由非线性控制器引起的高频行为的恶化。