专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5223072A Intelligent servo-controlled fiber placement machine tensioner 失效
标题翻译：智能伺服控制光纤放置机张力器
公开(公告)号：US5223072A
公开(公告)日：1993-06-29
申请号：US705498
申请日：1991-05-24
申请人： John P. Brockman , Robert A. Carman , David C. Swope , Norman D. Neal , Harold D. Wiebe
发明人： John P. Brockman , Robert A. Carman , David C. Swope , Norman D. Neal , Harold D. Wiebe
IPC分类号： B29C70/16 , B29C53/80 , B65H59/02
CPC分类号： B29C53/8041 , B29C53/8016 , Y10T156/1348 , Y10T156/1788
摘要： To maintain tension on a fiber tow as it travels between a spool of the tow and a fiber placement head in a computer controlled fiber placement machine, closed tension loop servo control tow velocity feed forward is provided to control spool rotation so as to not only provide closed loop tension control but to also cause rotation in anticipation of expected tow movement such as due to tow payout upon commanded movements of the fiber placement head. Gain scheduling based on spool radius is also provided. Additionally, a compliant roller is provided to reduce tension dips and spikes from disturbances on the tow, and an inner velocity loop is included with the closed tension loop to provide more effective control of tow tension. The servo control is reconfigurable into an open or pseudo-closed loop mode with a safety low power supply to slowly reel-up slack tow after tow threading, for example, and to otherwise maintain low tension on the tow to hold it in the machine while allowing servicing thereof. A broken tow test is also provided to detect tow slippage indicative of tow breakage or a possible part defect.
摘要翻译：为了保持纤维丝束在丝束的卷轴和计算机控制的光纤贴片机中的光纤放置头之间的张力时，提供闭合张力环伺服控制丝束速度前馈以控制卷轴旋转，以便不仅提供闭环张力控制，但也可以预期预期丝束运动引起旋转，例如由于纤维放置头的指令运动引起的牵引支付。还提供了基于线轴半径的增益调度。另外，提供柔顺的辊以减少来自牵引器上的干扰的张力下降和尖峰，并且闭合张力环包括内部速度回路以提供更有效的牵引张力控制。例如，伺服控制可重新配置成具有安全低电源的开放或伪闭环模式，以缓慢卷绕松弛丝束，并且例如在丝束上保持低张力以将其保持在机器中，允许维修。还提供了破碎的丝束试验以检测指示丝束断裂或可能的部分缺陷的丝束滑动。

2. 发明授权

US5696670A Power supply for arc-discharge load 失效
标题翻译：电弧放电负载电源
公开(公告)号：US5696670A
公开(公告)日：1997-12-09
申请号：US451857
申请日：1995-05-26
申请人： David A. Roederer , Norman D. Neal
发明人： David A. Roederer , Norman D. Neal
IPC分类号： H02M1/00 , H02M1/42 , H05B41/28 , H05B41/288 , H02M3/335 , H02M1/12 , H05B41/16
CPC分类号： H02M1/4258 , H05B41/28 , H05B41/2885 , Y02B20/202 , Y02B70/126 , Y10S315/07
摘要： The power supply, well suited for powering a metal halide lamp, includes a rectifier with an AC input and a DC output. A power transformer has its primary winding connected to the DC output and its secondary winding connected to the lamp. A pulse-width-modulated (PWM) controller is coupled to the primary winding for controlling the flow of power therethrough. A smoothing circuit is connected to the lamp for reducing the rate of change of the current flowing through the lamp. Avoiding filtering of the rectifier output, maintaining a constant pulse width of the PWM controller throughout the period of the AC input power and filtering switching-frequency current components from the input to the rectifier provides a sinusoidal input current to the power supply which is substantially in phase with the input voltage. Such supply has a power factor of over 99%.
摘要翻译：适合为金属卤化物灯供电的电源包括具有AC输入和DC输出的整流器。电力变压器的初级绕组连接到直流输出，其次级绕组连接到灯。脉冲宽度调制（PWM）控制器耦合到初级绕组，用于控制通过其的功率流。平滑电路连接到灯，用于降低流过灯的电流的变化率。避免对整流器输出进行滤波，在整个交流输入功率的整个周期内保持PWM控制器的恒定脉冲宽度，以及从输入到整流器的开关频率电流分量滤波，为电源提供正弦输入电流，与输入电压相位。这种供应功率因数超过99％。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式