专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

11. 发明授权

US5382134A Active noise control using noise source having adaptive resonant frequency tuning through stiffness variation 失效
标题翻译：使用具有通过刚度变化的自适应谐振频率调谐的噪声源的主动噪声控制
公开(公告)号：US5382134A
公开(公告)日：1995-01-17
申请号：US143602
申请日：1993-11-01
申请人： Frederic G. Pla , Harindra Rajiyah , Anthony A. Renshaw , Robert A. Hedeen
发明人： Frederic G. Pla , Harindra Rajiyah , Anthony A. Renshaw , Robert A. Hedeen
IPC分类号： B64C11/00 , F02C7/045 , G10K11/178 , F01D25/00
CPC分类号： G10K11/1788 , B64C11/00 , F02C7/045 , F05D2260/96 , F05D2260/962 , G10K2210/107 , G10K2210/121 , G10K2210/1281 , G10K2210/3212 , G10K2210/32271 , G10K2210/32291 , G10K2210/512 , Y02T50/671
摘要： A noise source for an aircraft engine active noise cancellation system in which the resonant frequency of a noise radiating element is tuned to permit noise cancellation over a wide range of frequencies. The resonant frequency of the noise radiating element is tuned by a plurality of force transmitting mechanisms which contact the noise radiating element. Each one of the force transmitting mechanisms includes an expandable element and a spring in contact with the noise radiating element so that excitation of the element varies the spring force applied to the noise radiating element. The elements are actuated by a controller which receives input of a signal proportional to displacement of the noise radiating element and a signal corresponding to the blade passage frequency of the engine's fan. In response, the controller determines a control signal which is sent to the elements and causes the spring force applied to the noise radiating element to be varied. The force transmitting mechanisms can be arranged to either produce bending or linear stiffness variations in the noise radiating element.
摘要翻译：用于飞机发动机主动噪声消除系统的噪声源，其中噪声辐射元件的谐振频率被调谐以允许在宽范围的频率上进行噪声消除。噪声辐射元件的谐振频率由与噪声辐射元件接触的多个力传递机构调谐。每个力传递机构包括可膨胀元件和与噪声辐射元件接触的弹簧，使得元件的激发改变施加到噪声辐射元件的弹簧力。这些元件由接收与噪声辐射元件的位移成比例的信号的输入和对应于发动机风扇的叶片通过频率的信号的控制器致动。作为响应，控制器确定发送到元件的控制信号，并且使施加到噪声辐射元件的弹簧力变化。力传递机构可以布置成在噪声辐射元件中产生弯曲或线性刚度变化。

12. 发明申请

US20160086278A1 Risk Factor Splitting 审中-公开
标题翻译：风险因素分解
公开(公告)号：US20160086278A1
公开(公告)日：2016-03-24
申请号：US14495470
申请日：2014-09-24
申请人： Anthony A. Renshaw
发明人： Anthony A. Renshaw
IPC分类号： G06Q40/06 , G06Q40/04
CPC分类号： G06Q40/06 , G06Q40/04
摘要： Factor-based performance attribution results are often used to identify portfolio exposures or bets that either perform well or underperform. By identifying particular exposures or bets that appear to be opportune to be increased or reduced, the overall performance of the portfolio can potentially be improved. However, the factors present in standard factor risk models are often too broad to identify exposures or bets which can be easily altered. Changing exposures based on the original risk model factors can involve trading too many stocks, or can involve trading stocks that a portfolio manager may not want to trade. The present invention allows portfolio managers to split the original risk model factors into more granular factors that cover smaller sub-sets of the assets in the portfolio. The over- and under-performing exposures of split factors are often easier to alter in practice and can be used to improve the performance of the portfolio.
摘要翻译：基于因素的绩效归因结果通常用于识别投资组合风险敞口或表现良好或表现不佳的投注。通过确定看起来有助于增加或减少的特定风险敞口或投注，投资组合的整体绩效可能会有所改善。然而，标准因素风险模型中存在的因素通常太广泛，无法识别易于改变的风险敞口或投注。基于原始风险模型因素改变风险可能涉及交易太多的股票，或者可能涉及投资组合经理不想交易的交易股票。本发明允许投资组合经理将原始风险模型因素分解成更细粒度的因素，以涵盖投资组合中较小的资产子集。分拆因素的过度和不足的风险在实践中往往更容易改变，可用于提高投资组合的表现。

13. 发明申请

US20140081889A1 Purifying Portfolios Using Orthogonal Non-Target Factor Constraints 审中-公开
标题翻译：使用正交非目标因子约束来净化投资组合
公开(公告)号：US20140081889A1
公开(公告)日：2014-03-20
申请号：US14025127
申请日：2013-09-12
申请人： Anthony A. Renshaw
发明人： Anthony A. Renshaw
IPC分类号： G06Q40/06
CPC分类号： G06Q40/06
摘要： The quantitative construction of investment portfolios of securities such as stocks, bonds, or the like using optimization is addressed. More specifically, during optimization constraints on non-target factor exposures are automatically converted to constraints on the exposure of the projections of the non-target factors that are orthogonal to a specified target factor. Such constraints may be utilized to produce portfolios with superior performance to those produced with traditional factor exposure constraints.
摘要翻译：解决使用优化的股票，债券等证券投资组合的定量构建。更具体地，在优化期间，对非目标因素曝光的约束被自动转换为与指定目标因子正交的非目标因子的投影的曝光的约束。可以利用这些约束来产生具有优于传统因子暴露约束产生的组合的投资组合。

14. 发明授权

US5415522A Active noise control using noise source having adaptive resonant frequency tuning through stress variation 失效
标题翻译：使用具有通过应力变化的自适应谐振频率调谐的噪声源的主动噪声控制
公开(公告)号：US5415522A
公开(公告)日：1995-05-16
申请号：US143605
申请日：1993-11-01
申请人： Frederic G. Pla , Harindra Rajiyah , Anthony A. Renshaw , Robert A. Hedeen
发明人： Frederic G. Pla , Harindra Rajiyah , Anthony A. Renshaw , Robert A. Hedeen
IPC分类号： B64C1/40 , F02C7/045 , G10K11/178 , F01D25/00
CPC分类号： G10K11/1788 , F02C7/045 , F05D2260/962 , G10K2210/102 , G10K2210/121 , G10K2210/1281 , G10K2210/3212 , G10K2210/3217 , G10K2210/3227 , G10K2210/3229 , G10K2210/512 , Y02T50/671
摘要： A noise source for an aircraft engine active noise cancellation system in which the resonant frequency of a noise radiating element is tuned to permit noise cancellation over a wide range of frequencies. The resonant frequency of the noise radiating element is tuned by an expandable ring embedded in the noise radiating element. Excitation of the ring causes expansion or contraction of the ring, thereby varying the stress in the noise radiating element. The ring is actuated by a controller which receives input of a feedback signal proportional to displacement of the noise radiating element and a signal corresponding to the blade passage frequency of the engine's fan. In response, the controller determines a control signal which is sent to the ring, causing the ring to expand or contract. Instead of a single ring embedded in the noise radiating panel, a first expandable ring can be bonded to one side of the noise radiating element, and a second expandable ring can be bonded to the other side.
摘要翻译：用于飞机发动机主动噪声消除系统的噪声源，其中噪声辐射元件的谐振频率被调谐以允许在宽范围的频率上进行噪声消除。噪声辐射元件的谐振频率由嵌入在噪声辐射元件中的可扩展环调谐。环的激励导致环的膨胀或收缩，从而改变噪声辐射元件中的应力。该环由控制器启动，控制器接收与噪声辐射元件的位移成比例的反馈信号的输入和对应于发动机风扇的叶片通过频率的信号。作为响应，控制器确定发送到环的控制信号，导致环扩展或收缩。代替嵌入噪声辐射板中的单个环，第一可膨胀环可以结合到噪声辐射元件的一侧，并且第二可膨胀环可以结合到另一侧。

15. 发明授权

US5391053A Active noise control using noise source having adaptive resonant frequency tuning through variable panel loading 失效
标题翻译：使用具有通过可变面板加载进行自适应谐振频率调谐的噪声源的主动噪声控制
公开(公告)号：US5391053A
公开(公告)日：1995-02-21
申请号：US143604
申请日：1993-11-01
申请人： Frederic G. Pla , Harindra Rajivah , Anthony A. Renshaw , Robert A. Hedeen
发明人： Frederic G. Pla , Harindra Rajivah , Anthony A. Renshaw , Robert A. Hedeen
IPC分类号： B64C11/00 , F02C7/045 , G10K11/178 , F01D25/00
CPC分类号： B64C11/00 , F02C7/045 , G10K11/1788 , F05D2260/962 , G10K2210/107 , G10K2210/121 , G10K2210/1281 , G10K2210/3212 , G10K2210/3227 , G10K2210/32291 , G10K2210/512 , Y02T50/671
摘要： A noise source for an aircraft engine active noise cancellation system in which the resonant frequency of a noise radiating element is tuned to permit noise cancellation over a wide range of frequencies. The resonant frequency is tuned by adjusting the size of a frame which encloses the noise radiating element. One or more expandable elements are disposed in the frame to produce expansion and contraction of the frame. The elements are actuated by a controller which receives input of a feedback signal proportional to displacement of the noise radiating element and a signal corresponding to the blade passage frequency of the engine's fan. In response, the controller determines a control signal which is sent to the elements and causes the frame to expand or contract.
摘要翻译：用于飞机发动机主动噪声消除系统的噪声源，其中噪声辐射元件的谐振频率被调谐以允许在宽范围的频率上进行噪声消除。通过调节包围噪声辐射元件的框架的尺寸来调谐谐振频率。一个或多个可膨胀元件设置在框架中以产生框架的膨胀和收缩。这些元件由接收与噪声辐射元件的位移成比例的反馈信号的输入和对应于发动机风扇的叶片通过频率的信号的控制器致动。作为响应，控制器确定发送到元件的控制信号，并使框架展开或收缩。

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