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1. 发明授权

US4433370A Multiple phase chopper current limiting 失效
标题翻译：多相斩波电流限制
公开(公告)号：US4433370A
公开(公告)日：1984-02-21
申请号：US362274
申请日：1982-03-26
申请人： Sam M. Karadsheh , Thomas A. Radomski
发明人： Sam M. Karadsheh , Thomas A. Radomski
IPC分类号： H02M3/139 , H02M3/142 , H02P7/29 , H02M3/315 , H02H7/122 , H02P7/28
CPC分类号： H02M3/142 , H02M3/139 , H02P7/2913 , Y10S388/915 , Y10S388/92
摘要： The current in each phase of a multiple phase chopper is sensed and compared to a reference overcurrent value. Any chopper phase reaching overcurrent and any chopper phase on for a longer period of time are turned off immediately. The conduction periods of chopper phases that have been on for a shorter period of time than the overcurrent phase are similarly shortened to maintain balanced phase conduction and minimize the ripple content of the source current. The phase relationship among the various chopper phases is adjusted in response to an overcurrent turn-off to allow the commutation network associated with such phase to be adequately charged before the generation of a current turn-on for another phase.
摘要翻译：检测多相斩波器的每相中的电流并将其与参考过电流值进行比较。任何斩波相达到过电流和任何斩波相位较长时间都将立即关闭。相对于过电流相位较短时间段的斩波相的导通时间同样缩短，以保持平衡相导通，并使源极电流的波动含量最小化。响应于过电流关断来调整各个斩波相之间的相位关系，以便在产生用于另一相的电流接通之前允许与这种相位相关联的换向网络被充分地充电。

2. 发明授权

US4366531A Phase control for a multiple phase SCR chopper 失效
标题翻译：多相SCR斩波器的相位控制
公开(公告)号：US4366531A
公开(公告)日：1982-12-28
申请号：US292250
申请日：1981-08-12
申请人： Sam M. Karadsheh , Thomas A. Radomski
发明人： Sam M. Karadsheh , Thomas A. Radomski
IPC分类号： H02M3/142 , H02M3/135
CPC分类号： H02M3/142 , Y10S388/915 , Y10S388/917
摘要： A multiple phase SCR chopper controller for establishing a normal phase relationship among the various SCR phases and for modifying the normal phase relationship for input signals for which the SCR commutation networks cannot be sufficiently charged. These input signals correspond to conduction period overlap, and the modified phase relationship avoids chopper commutation failure under such conditions.
摘要翻译：一种多相SCR斩波控制器，用于在各种SCR相位之间建立正常相位关系，并用于修改SCR换向网络不能充分充电的输入信号的正常相位关系。这些输入信号对应于导通周期重叠，并且修改的相位关系在这种条件下避免了斩波换向失败。

3. 发明授权

US4970647A Rear wheel steering angle control method 失效
标题翻译：后轮转向角控制方法
公开(公告)号：US4970647A
公开(公告)日：1990-11-13
申请号：US348444
申请日：1989-05-08
申请人： Sam M. Karadsheh , John M. Mackovjak , Scott D. Morrison , Janet S. Goings
发明人： Sam M. Karadsheh , John M. Mackovjak , Scott D. Morrison , Janet S. Goings
IPC分类号： B62D6/00 , B62D6/02 , B62D7/14 , B62D7/15 , B62D101/00 , B62D113/00
CPC分类号： B62D7/159
摘要： A rear wheel steering system in which the rear steering command is retrieved from a three dimensional (3D) lookup table as a function of both front wheel steering angle and vehicle speed in normal operating modes, and from a two dimensional (2D) lookup table as a function of front wheel steering angle without regard to the vehicle speed under conditions where the vehicle speed information is deemed not credible. If the measured vehicle speed is judged to be not credible, it is replaced with an estimated or recently measured credible vehicle speed value, and the replacement value is then used in connection with the measured front wheel steering angle signal to retrieve a rear wheel steering command from the 3D lookup table. However, when the front wheels have been returned to the straight ahead position, the rear wheel steering angle command is retrieved from the 2D lookup table as a sole function of the measured front wheel steering angle. When the vehicle speed signal abnormality is corrected and the front wheels are returned to the straight ahead position, the system reverts to the normal operating mode in which the rear steering command is retrieved from the 3D lookup table as a function of both the front wheel steering angle and the measured vehicle speed.

4. 发明授权

US4509611A Adaptive controller for electric power steering 失效
标题翻译：电动助力转向自适应控制器
公开(公告)号：US4509611A
公开(公告)日：1985-04-09
申请号：US541781
申请日：1983-10-13
申请人： Alexander Kade , Sam M. Karadsheh
发明人： Alexander Kade , Sam M. Karadsheh
IPC分类号： B62D5/04 , B62D6/00 , B62D6/10 , B62D119/00
CPC分类号： B62D6/10
摘要： A torque transducer senses the operator exerted steering torque and provides an output signal which varies in magnitude from a low value representative of a large operator exerted steering torque in one direction through a mean value representative of no operator exerted steering torque to an upper limit value representative of a large operator exerted steering torque in the opposite direction. The controller develops a zero torque reference which has an initial value substantially corresponding to the mean value of the torque transducer output signal, and steering torque assist is developed in relation to the difference between the zero torque reference and the transducer output signal. In operation, the zero torque reference is shifted according to a predetermined time response characteristic in a direction to reduce the difference between it and the transducer output signal. Over a period of time, the shifting of the zero torque difference due to operator exerted steering torque tends to cancel out and the remaining shifting adaptively compensates the zero torque reference for drift and other like sources of error affecting the magnitude of the transducer output signal.
摘要翻译：扭矩传感器感测操作者施加的转向扭矩并且提供输出信号，该输出信号的大小与代表大操作者的低值在一个方向上通过代表无操作者的平均值发挥转向转矩的数值相比变化到上限值代表大操作者在相反方向施加转向力矩。控制器开发零转矩基准，其具有基本上对应于扭矩传感器输出信号的平均值的初始值，并且相对于零转矩基准和换能器输出信号之间的差异产生转向转矩辅助。在操作中，零转矩基准在减小其与换能器输出信号之间的差异的方向上根据预定时间响应特性偏移。在一段时间内，由于操作者施加的转向扭矩导致的零转矩差的偏移倾向于抵消，并且剩余的移位自适应地补偿用于漂移的零转矩参考和影响换能器输出信号的幅度的其它类似的误差源。

5. 发明授权

US4540923A Adaptive servomotor controller 失效
标题翻译：自适应伺服电机控制器
公开(公告)号：US4540923A
公开(公告)日：1985-09-10
申请号：US609779
申请日：1984-05-14
申请人： Alexander Kade , Sam M. Karadsheh
发明人： Alexander Kade , Sam M. Karadsheh
IPC分类号： G05B13/02 , G05B19/19 , G05B13/00 , G05B11/01
CPC分类号： G05B19/19 , G05B13/0205 , G05B2219/37391 , G05B2219/41163
摘要： The gain of a servomotor driven process control system is adaptively compensated for changes in the motor coulomb friction torque. The gain is manually adjusted at the time of installation. Thereafter, the minimum motor current occurring in a process cycle is identified, and the gain is automatically adjusted if the identified minimum motor current changes over time, indicating a change in the motor coulomb friction torque. As a result, the level of response stability achieved at the time of installation is maintained despite changes in the motor coulomb friction torque.
摘要翻译：伺服电机驱动过程控制系统的增益自适应地补偿了电机库仑摩擦转矩的变化。增益在安装时手动调整。此后，识别在处理周期中发生的最小电动机电流，并且如果所识别的最小电动机电流随时间而变化，则指示电动机库仑摩擦转矩的变化，则增益被自动调整。结果，尽管电动机库伦摩擦转矩发生变化，仍然保持了在安装时实现的响应稳定性水平。

6. 发明授权

US4924696A Noncontacting position sensor for an automotive steering system 失效
标题翻译：用于汽车转向系统的非接触式位置传感器
公开(公告)号：US4924696A
公开(公告)日：1990-05-15
申请号：US384375
申请日：1989-07-24
申请人： Allen G. Schroeder , Thaddeus Schroeder , Sam M. Karadsheh , Janet S. Goings , Ronald T. Golebiewski
发明人： Allen G. Schroeder , Thaddeus Schroeder , Sam M. Karadsheh , Janet S. Goings , Ronald T. Golebiewski
IPC分类号： G01B7/30 , B62D3/12 , B62D5/22 , B62D15/02 , G01B7/00
CPC分类号： B62D15/02 , B62D5/22
摘要： A noncontacting automotive steering angle sensor involving the application of a two element magnetoresistive sensor to an otherwise conventional rack and pinion steering system. The rack is directly coupled to the steerable wheels, and the sensor is integrally mounted in a spring-loaded rack contacting mechanism (contact shoe) used to maintain a meshing engagement between the pinion and the rack. A variable permeability surface is formed on the surface of the rack along the travel path of the sensor such that axial movement of the rack differentially varies the magnetic flux density detected by each element of the sensor. A detector circuit comprising a bridge or simple voltage divider responsive to the differential resistances of the sensor elements develops an electrical signal indicative of the rack position.

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