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1.发明授权
公开(公告)号：US3910527A
公开(公告)日：1975-10-07
申请号：US44957774
申请日：1974-03-08
Applicant: IBM
Inventor： BUHLER OTTO R , CUTTER JOSEPH T , MANTEY JOHN P , WOOD DAVID R
Abstract: The parameters, i.e., acceleration/deceleration, speed, position and tension, of a length of unbuffered magnetic recording tape, which runs between the two reels of a reel-to-reel tape transport, are accurately controlled by a closed-loop servomechanism which is controlled as a function of the tape distribution between the two reels. A number of design-point servo networks are constructed and arranged to energize the reel motors, based upon the assumption that given tape distributions exist. The outputs of these point servo networks are weighted or blended by a network which is controlled in accordance with actual tape distribution. The output of the weighting network is then used to control reel motor energization.
Abstract translation: 通过一个闭环伺服机构精确地控制在卷轴到卷轴带传输的两个卷轴之间运行的无缓冲磁记录带长度的加速/减速，速度，位置和张力的参数， 作为两个卷轴之间的带分布的函数被控制。 基于存在给定的磁带分布的假设，构造并布置了许多设计点伺服网络以对卷轴电机通电。 这些点伺服网络的输出由根据实际磁带分布控制的网络进行加权或混合。 然后，加权网络的输出用于控制卷轴电机通电。
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公开(公告)号：CA1181836A
公开(公告)日：1985-01-29
申请号：CA399186
申请日：1982-03-23
Applicant: IBM
Inventor： COLGLAZIER DONALD F , JANSSEN DONOVAN M , MANTEY JOHN P , VALENT JAMES A
Abstract: A sheet registration apparatus for positioning sheets in a registered position on a work surface such as the document platen of a convenience copier/ duplicator machine. The apparatus includes a bidirectional servo-controlled sheet transport for conveying the sheet over the work surface. A sheet sensing device is disposed within the path of sheet travel A controller monitors the sensing device and activates a position control routine following the occurrence of a predetermined level change in the signal generated by the sensing device. At the end of the position control routine, the transport is stopped thereby positioning the sheet in the registration zone. The apparatus enables sheet registration for a machine operating in a duplex and/or simplex mode. The apparatus further enables registration at any point on the document platen.
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公开(公告)号：CA1005859A
公开(公告)日：1977-02-22
申请号：CA205109
申请日：1974-07-17
Applicant: IBM
Inventor： MANTEY JOHN P
Abstract: A closed-loop sampled-data servomechanism wherein each sample of the aperiodic feedback signal from a digital transducer is tested to determine if it is credible or valid feedback information. If it is credible, the feedback sample is used as feedback information by the servomechanism. In addition, the valid sample is stored in a memory. Thus, the memory always contains the most recent valid feedback sample. If a particular feedback sample is not valid, the most recent prior valid feedback sample is obtained from the memory and is used by the servomechanism to construct a substitute for the current invalid feedback sample.
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