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    • 5. 发明授权
    • Position control circuit
    • 位置控制电路
    • US4330752A
    • 1982-05-18
    • US38667
    • 1979-05-14
    • Ruediger F. Rauskolb
    • Ruediger F. Rauskolb
    • G03F7/20H03K5/26
    • G03F7/70716
    • A pair of position control circuits is employed for controlling the position of an interferometrically controlled stage along orthogonal X and Y axes of motion of the stage. Each of these position control circuits is provided with a variable phase shifter responsive to a reference signal and a control signal for producing an output signal of the same frequency as the reference signal but shifted in phase as determined by the control signal, and with a phase detector responsive to the output signal from the variable phase shifter and to a measurement signal obtained from the interferometrically controlled stage for producing a position control signal proportional to the difference in phase between those signals. The sum and the difference of the position control signals of selected phase produced by these position control circuits are employed to extend the resolution of the position control circuits.
    • 采用一对位置控制电路来控制沿着平台的X轴运动和Y轴运动的干涉控制台的位置。 这些位置控制电路中的每一个都具有响应于参考信号的可变移相器和用于产生与参考信号相同频率但是由控制信号确定的相位偏移的输出信号的控制信号,并且具有相位 检测器响应于来自可变移相器的输出信号和从干涉控制级获得的测量信号,以产生与这些信号之间的相位差成比例的位置控制信号。 采用由这些位置控制电路产生的所选相位置的控制信号的总和和差以扩大位置控制电路的分辨率。
    • 6. 发明授权
    • Disk certifier
    • 磁盘验证者
    • US4746995A
    • 1988-05-24
    • US853194
    • 1986-04-17
    • Ruediger F. Rauskolb
    • Ruediger F. Rauskolb
    • G01R33/12G11B20/18G11B27/36
    • G01R33/1207G11B20/1816G11B27/36
    • A completely automated apparatus for disk certification which has a very high volume production per unit area of square footage required. Volumes of 108 million disks per year require only 1200 square feet of facility, about 3% of the space required for the prior art certification systems. The apparatus uses standard unmodified disk drives and is completely integrated with a conveyor and pickup system for automatic loading and unloading of diskettes. A method of sequencing operations on a disk is disclosed whereby all tracks of disk are written to provide a first test signal. Then all tracks are read after all tracks are written to provide a first read signal. Calculations are performed on the first read signal to obtain a calculated signal and the calculated signal is compared with a known standard. By writing an entire disk before reading the entire disk, rather than writing and reading on a track by track basis, operations on several disk drives can be sequenced to be performed simultaneously while using the same measurement electronics as would be required for one drive.
    • 一种完全自动的磁盘认证设备,每单位面积平方英尺的数量需要非常大的批量生产。 每年有1.08亿个磁盘卷,只有1200平方英尺的设备,约占现有技术认证系统所需空间的3%。 该设备使用标准的未修改的磁盘驱动器,并与输送机和拾取系统完全集成,用于自动装载和卸载软盘。 公开了一种对磁盘进行排序操作的方法,其中写入磁盘的所有轨道以提供第一测试信号。 然后在写入所有轨道之后读取所有轨道以提供第一读取信号。 对第一读取信号执行计算以获得计算的信号,并将计算的信号与已知标准进行比较。 通过在读取整个磁盘之前编写整个磁盘,而不是按轨道进行写入和读取,可以对几个磁盘驱动器上的操作进行排序,以同时使用与一个驱动器所需的相同的测量电子元件。