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1. 发明授权

US3529177A Signal integrator and charge transfer circuit 失效
标题翻译：信号整合器和充电传输电路
公开(公告)号：US3529177A
公开(公告)日：1970-09-15
申请号：US3529177D
申请日：1969-06-05
申请人： IBM
发明人： PAWLETKO JOSEPH P
IPC分类号： G06K9/18 , G06K9/20 , H03F1/32 , H03G3/30 , G06G7/12
CPC分类号： G06K9/183 , G06K9/20 , H03F1/32 , H03G3/30

2. 发明授权

US3636429A Logic circuitry for providing stopping control for stepping motors 失效
标题翻译：提供步进电机停机控制的逻辑电路
公开(公告)号：US3636429A
公开(公告)日：1972-01-18
申请号：US3636429D
申请日：1970-05-08
申请人： IBM
发明人： JAKUBOWSKI MAREK , PAWLETKO JOSEPH P
IPC分类号： H02P8/32 , G05B19/40
CPC分类号： H02P8/32
摘要： The invention is concerned with circuitry for providing a sequence of stopping pulses derived from motor feedback pulses. It includes means for providing an initial stop pulse which reverses the phase of the motor to thereby develop a negative torque. Intermediate stopping pulses in the form of feedback pulses continue to apply the negative torque to the rotor. A final stopping pulse not derived from the feedback pulses is applied to bring the motor to its equilibrium position. In this manner, a stepping motor can be stopped with substantially no oscillations after a specified number of steps.

3. 发明授权

US3601678A Stepping motor constant velocity drive including closed and open loop control 失效
标题翻译：步进电机恒定速度驱动，包括闭合和开环控制
公开(公告)号：US3601678A
公开(公告)日：1971-08-24
申请号：US3601678D
申请日：1970-05-27
申请人： IBM
发明人： ABRAHAM DENNIS G , DOHANICH GEORGE J , PAWLETKO JOSEPH P
IPC分类号： H02P8/14 , G05B19/40
CPC分类号： H02P8/14
摘要： A stepping motor drive which includes both a closed loop feedback control system and an open loop oscillator control system. The stepping motor is started by a start pulse, and feedback pulses from an emitter driven by the motor are gated to accelerate the motor. At the same time, the feedback pulses are gated to reset and synchronize a free-running oscillator. Feedback and oscillator pulses are compared, and when synchronism is achieved, i.e., the motor is up to speed, the oscillator pulse gate drive is enabled. When this occurs, the oscillator is controlled by a discriminator which compares the phase of the oscillator and feedback pulses and corrects the relation therebetween by modifying the oscillator frequency.

4. 发明授权

US3867676A Variable reluctance linear stepper motor 失效
标题翻译：可变磁阻线性步进电机
公开(公告)号：US3867676A
公开(公告)日：1975-02-18
申请号：US39922573
申请日：1973-09-20
申请人： IBM
发明人： CHAI HI D , PAWLETKO JOSEPH P
IPC分类号： H02K37/00 , B41J19/30 , H02K41/03 , H02P6/00 , H02P25/08 , H02K41/00
CPC分类号： H02P25/08 , B41J19/305 , H02K41/03 , H02P6/006
摘要： The poles of a variable reluctance type linear stepper motor are arranged in an odd plural number of pairs and each pole is provided with two windings. For each pole pair, one winding of the pole of the particular pair is connected in series-aiding relationship with one of the windings of the other pole of the pair. The other two windings of the particular pair of poles are also connected in series-aiding relationship. The series connected windings are selectively energizable in predetermined stepping sequences for single phase, double phase and alternate single and double phase energizing operational modes. As a result, relative motion is provided between the pole structure of the motor and its variable reluctance member. The directions of energization of the respective two series connected windings of each particular pole pair are in opposition with respect to each other. The energization is such that the change of direction of the flux through the poles is minimized between steps, thereby providing a concomitant reduction in electrical and/or heat losses.
摘要翻译：可变磁阻型线性步进电机的极点以奇数对配置，每个极设有两个绕组。对于每个极对，特定对的极的一个绕组与该对的另一个极的一个绕组串联连接。特定对极的另外两个绕组也是串联的关系。串联的绕组可以按照预定的步进顺序选择性地供电，用于单相，双相和交替的单相和双相通电操作模式。结果，在电机的极结构和其可变磁阻部件之间提供相对运动。每个特定极对的相应的两个串联的绕组的通电方向相对于彼此相对。通电使得通过极的通量的方向的变化在步骤之间最小化，从而提供电和/或热损失的伴随的减少。

5. 发明授权

US3694725A Stepping motor control system using pulse injection 失效
标题翻译：使用脉冲注入的步进电机控制系统
公开(公告)号：US3694725A
公开(公告)日：1972-09-26
申请号：US3694725D
申请日：1969-12-29
申请人： IBM
发明人： ABRAHAM DENNIS G , PAWLETKO JOSEPH P
IPC分类号： H02P8/00 , G05B19/40 , H02P8/24
CPC分类号： H02P8/24
摘要： Single step operation of a stepping motor and deceleration of the stepping motor utilized in a closed-loop mode are obtained utilizing a pulse injection arrangement in which a suitable plurality of pulses are supplied in rapid succession to the drive circuits for the stepping motor in order to quickly step the magnetic fields to the proper condition at a rate too fast for the rotor to follow.

6. 发明授权

US3518516A Stepping motor constant velocity drive 失效
标题翻译：步进电机恒定速度驱动
公开(公告)号：US3518516A
公开(公告)日：1970-06-30
申请号：US3518516D
申请日：1967-12-26
申请人： IBM
发明人： PAWLETKO JOSEPH P
IPC分类号： H02P8/00 , H02P8/14 , H02P1/52
CPC分类号： H02P8/14

7. 发明授权

US3705370A Magnetically actuated and restored print hammer 失效
标题翻译：磁力激活和恢复打印锤
公开(公告)号：US3705370A
公开(公告)日：1972-12-05
申请号：US3705370D
申请日：1971-04-15
申请人： IBM
发明人： CHAI HI D , MILLS STEPHEN H , PAWLETKO JOSEPH P , PETERS FRANCIS E , YOUNG CARL T
IPC分类号： B41J9/38 , H01F7/14 , H02K33/00 , H01F7/08
CPC分类号： H02K33/00 , B41J9/38 , H01F7/14
摘要： A magnetic actuator comprises a three-legged magnetic core with an armature pivotally mounted at the middle leg to have portions on either side thereof with an abutting gap relation with one outer leg and an abutting plus a peripheral gap relation with the other. A winding on the one abutting leg provides drive flux, and a winding or permanent magnet on the other leg provides a restore or detent flux between teeth on the armature and core.

8. 发明授权

US3530308A Signal attenuating circuit using transistor with direct current isolated collector and nonlinear base input compensation 失效
标题翻译：使用直接电流隔离收集器和非线性基准输入补偿的晶体管的信号衰减电路
公开(公告)号：US3530308A
公开(公告)日：1970-09-22
申请号：US3530308D
申请日：1969-06-05
申请人： IBM
发明人： PAWLETKO JOSEPH P
IPC分类号： G06G7/184 , G06K9/18 , H03F1/32 , H03G1/00 , H03G3/30 , H03K5/08
CPC分类号： G06G7/184 , G06K9/183 , H03F1/32 , H03G1/0082 , H03G3/30

9. 发明授权

US3513774A Printer hammer compensation 失效
标题翻译：打印机锤子补偿
公开(公告)号：US3513774A
公开(公告)日：1970-05-26
申请号：US3513774D
申请日：1968-07-01
申请人： IBM
发明人： PAWLETKO JOSEPH P , ROSS CHARLES O
IPC分类号： B41J9/46 , B41J9/50 , G06K15/06 , B41J9/30 , H01H47/32
CPC分类号： B41J9/50

10. 发明授权

US3471832A Character recognition apparatus 失效
公开(公告)号：US3471832A
公开(公告)日：1969-10-07
申请号：US3471832D
申请日：1965-07-06
申请人： IBM
发明人： PAWLETKO JOSEPH P
IPC分类号： G06G7/184 , G06K9/18 , G06K9/20 , H03F1/32 , H03G3/30 , G06K9/02
CPC分类号： H03G3/30 , G06G7/184 , G06K9/183 , G06K9/20 , H03F1/32

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