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1. 发明授权

US10060399B2 Method and apparatus for optimum drive signal control of an electromagnetically-activated actuator 有权
公开(公告)号：US10060399B2
公开(公告)日：2018-08-28
申请号：US15135785
申请日：2016-04-22
申请人： Chandra S. Namuduri , Suresh Gopalakrishnan , Avoki M. Omekanda , Thomas W. Nehl
发明人： Chandra S. Namuduri , Suresh Gopalakrishnan , Avoki M. Omekanda , Thomas W. Nehl
IPC分类号： F02M51/06 , F02M63/00 , H02K33/16 , F02D41/20
CPC分类号： F02M51/0614 , F02D41/20 , F02D2041/1409 , F02D2041/2034 , F02D2041/2037 , F02D2041/2051 , F02D2041/2055 , F02D2041/2072 , F02M63/0017 , H02K33/16
摘要： An electromagnetically-activated actuator includes an electrical coil, an armature moveable between rest and actuated positions, and a bi-directional driver. A method for controlling an actuator event includes applying a supply voltage at a first polarity across the coil for a first duration to drive a forward current through the coil effective to move the armature away from the rest position. The forward current has a forward current peak at the end of the first duration. After the first duration, the supply voltage is applied at a second polarity across the coil for a second duration to drive a reverse current through the coil. The second duration terminates when the reverse current attains a predetermined reverse current peak, wherein the predetermined reverse current peak is coincident with the armature returning to the rest position.

2. 发明申请

US20170306907A1 METHOD AND APPARATUS FOR OPTIMUM DRIVE SIGNAL CONTROL OF AN ELECTROMAGNETICALLY-ACTIVATED ACTUATOR 审中-公开
公开(公告)号：US20170306907A1
公开(公告)日：2017-10-26
申请号：US15135785
申请日：2016-04-22
申请人： CHANDRA S. NAMUDURI , Suresh Gopalakrishnan , Avoki M. Omekanda , Thomas W. Nehl
发明人： CHANDRA S. NAMUDURI , Suresh Gopalakrishnan , Avoki M. Omekanda , Thomas W. Nehl
IPC分类号： F02M51/06 , F02M63/00 , H02K33/16 , F02D41/20
CPC分类号： F02M51/0614 , F02D41/20 , F02D2041/1409 , F02D2041/2034 , F02D2041/2037 , F02D2041/2051 , F02D2041/2055 , F02D2041/2072 , F02M63/0017 , H02K33/16
摘要： An electromagnetically-activated actuator includes an electrical coil, an armature moveable between rest and actuated positions, and a bi-directional driver. A method for controlling an actuator event includes applying a supply voltage at a first polarity across the coil for a first duration to drive a forward current through the coil effective to move the armature away from the rest position. The forward current has a forward current peak at the end of the first duration. After the first duration, the supply voltage is applied at a second polarity across the coil for a second duration to drive a reverse current through the coil. The second duration terminates when the reverse current attains a predetermined reverse current peak, wherein the predetermined reverse current peak is coincident with the armature returning to the rest position.

3. 发明申请

US20070285195A1 Direct flux control system for magnetic structures 审中-公开
标题翻译：磁结构直接磁通控制系统
公开(公告)号：US20070285195A1
公开(公告)日：2007-12-13
申请号：US11451953
申请日：2006-06-13
申请人： Thomas W. Nehl , Suresh Gopalakrishnan , Fang Deng
发明人： Thomas W. Nehl , Suresh Gopalakrishnan , Fang Deng
IPC分类号： H01F1/00
CPC分类号： H01F7/1844 , G01R33/14 , H01F7/1638 , H01F2007/1692
摘要： A method for controlling a magnetic structure including the steps of determining a flux associated with the magnetic structure and generating a control signal based, at least in part, upon the determined flux.
摘要翻译：一种用于控制磁性结构的方法，包括以下步骤：至少部分地基于所确定的磁通量来确定与所述磁性结构相关联的磁通并产生控制信号。

4. 发明授权

US08327984B2 Magnetorheological (MR) piston assembly with primary and secondary channels to improve MR damper force 失效
标题翻译：磁流变（MR）活塞组件具有一次和二次通道，以改善MR阻尼力
公开(公告)号：US08327984B2
公开(公告)日：2012-12-11
申请号：US12609395
申请日：2009-10-30
申请人： Robert T. Foister , Thomas W. Nehl , William C. Kruckemeyer , Oliver Raynauld
发明人： Robert T. Foister , Thomas W. Nehl , William C. Kruckemeyer , Oliver Raynauld
IPC分类号： F16F9/53
CPC分类号： F16F9/535
摘要： A magnetorheolgical (MR) damper includes a piston assembly having a primary channel disposed along a longitudinal axis and contained in a cylinder. MR fluid is also contained in the cylinder. The piston assembly having a primary channel, or primary channel MR piston assembly, includes a piston body having a first end axially spaced from a second end and defining a hole therethrough. The primary channel is defined in an outer body surface of the piston body from the hole at the second end to a coil groove in the outer body surface about the axis. A secondary channel is defined in the outer body surface from the coil groove towards the first end to improve MR damper force performance at low primary channel MR piston assembly velocities.
摘要翻译：磁流体（MR）阻尼器包括活塞组件，该活塞组件具有沿着纵向轴线设置并容纳在气缸中的主通道。液体流体也包含在气缸中。具有主通道或主通道MR活塞组件的活塞组件包括活塞体，其具有与第二端轴向间隔开并且限定穿过其中的孔的第一端。主通道被限定在活塞体的外体表面中，从第二端的孔到围绕轴线的外体表面中的线圈槽。第二通道被限定在外部体表面中，从线圈槽朝向第一端，以改善低主通道MR活塞组件速度下的MR阻尼器力性能。

5. 发明授权

US06948312B1 High-performance piston core for a magnetorheological damper 有权
标题翻译：用于磁流变阻尼器的高性能活塞芯
公开(公告)号：US06948312B1
公开(公告)日：2005-09-27
申请号：US10811516
申请日：2004-03-29
申请人： Janusz P. Goldasz , Zbigniew W. Szklarz , Alexander A. Alexandridis , Thomas W. Nehl , Fang Deng , Olivier Valee
发明人： Janusz P. Goldasz , Zbigniew W. Szklarz , Alexander A. Alexandridis , Thomas W. Nehl , Fang Deng , Olivier Valee
IPC分类号： F16D37/02 , F16F9/32 , F16F9/53
CPC分类号： F16F9/3214 , F16F9/535
摘要： A high-performance piston core including a first piston cylinder and a second piston cylinder, with a piston center longitudinally disposed between and magnetically coupling the first piston cylinder and the second piston cylinder. The piston center is made of high-performance magnetic material, such as Cobalt steel (CoFe), Silicon steel (SiFe), Vanadium/Cobalt steel (Permendur), alloys thereof, or the like. The high-performance magnetic materials exhibit high magnetic permeability and reduce the magnetic reluctance of flux bottlenecks. In addition, high-performance magnetic materials typically saturate at a higher flux density than the conventional magnetic materials. The first piston cylinder and the second piston cylinder can be made of conventional magnetic material, such as low-carbon steel. The first piston cylinder can include a ring disposed about an end, where the end is longitudinally attached and magnetically coupled to the piston center.
摘要翻译：一种高性能活塞芯，包括第一活塞气缸和第二活塞气缸，活塞中心纵向设置在第一活塞气缸和第二活塞气缸之间，并且磁性联接。活塞中心由钴（CoFe），硅钢（SiFe），钒/钴钢（Permendur），合金等高性能磁性材料制成。高性能磁性材料具有高磁导率，降低了磁通量瓶颈的磁阻。此外，高性能磁性材料通常以比常规磁性材料更高的磁通密度饱和。第一活塞缸和第二活塞缸可由常规的磁性材料制成，例如低碳钢。第一活塞气缸可以包括围绕端部设置的环，其中端部纵向附接并且磁耦合到活塞中心。

6. 发明申请

US20130001030A1 BI-STABLE SHOCK ABSORBER ASSEMBLY 有权
标题翻译：双稳态震动吸收器总成
公开(公告)号：US20130001030A1
公开(公告)日：2013-01-03
申请号：US13511004
申请日：2010-11-23
申请人： Janusz Goldasz , Thomas W. Nehl
发明人： Janusz Goldasz , Thomas W. Nehl
IPC分类号： F16F9/50 , F16F9/348 , F16F9/19
CPC分类号： F16F9/464 , F16F2222/06
摘要： A shock absorber assembly including a fluid for absorbing forces between the body and the wheel of a motor vehicle. The shock absorber includes a valve having a resilient disc engaging a piston for impeding the passage of fluid through the aperture of the piston. A bi-stable solenoid is disposed in the housing and is interconnected with the resilient disc of the valve. The bi-stable solenoid's armature is moveable between a first stable position for applying a first biasing force against the resilient disc of the valve and a second stable position for applying a second biasing force being less than the first biasing force against the resilient disc of the valve. The adjustment of the biasing force on the valve also adjusts the damping force of the shock absorber.
摘要翻译：一种减震器组件，包括用于吸收机体和车辆的车轮之间的力的流体。减震器包括具有接合活塞的弹性盘以阻止流体通过活塞的孔的阀。双稳态螺线管设置在壳体中并与阀的弹性盘相互连接。双稳电磁铁的电枢可在用于向阀的弹性盘施加第一偏压力的第一稳定位置和第二稳定位置之间移动，第二稳定位置用于施加小于第一偏压力的第二偏压力，阀。阀上的偏置力的调节也调节减震器的阻尼力。

7. 发明授权

US5251729A Vehicle suspension damper with relative velocity sensor having controlled flux path 失效
标题翻译：具有相对速度传感器的车辆悬架阻尼器具有受控的通量
公开(公告)号：US5251729A
公开(公告)日：1993-10-12
申请号：US811428
申请日：1991-12-20
申请人： Thomas W. Nehl , Jeri A. Betts , Larry S. Mihalko
发明人： Thomas W. Nehl , Jeri A. Betts , Larry S. Mihalko
IPC分类号： B60G17/019 , B60G11/26
CPC分类号： B60G17/019 , B60G2204/112 , B60G2400/202 , B60G2600/24
摘要： A relative velocity sensor in a vehicle suspension damper comprises an annular, radially polarized magnet at the top of the shock cylinder adjacent a sensor winding on the inside of the dust tube. A closed magnetic circuit is defined from the magnet through an annular magnetic member inside the magnet to the piston rod and back through the dust tube across the sensor winding to the magnet. Flux below the magnet is similarly confined through the cylinder and does not affect the sensor winding. The air gaps at the winding and the piston rod do not change with axial movement; and the flux linkage variation with axial movement is thus linear across the entire coil. A voltage is generated across the coil which is a strong and accurate signal of relative movement between the sprung and unsprung masses of the vehicle.
摘要翻译：车辆悬架阻尼器中的相对速度传感器包括位于冲击缸顶部的环形径向极化磁体，其邻近于尘埃管内侧的传感器绕组。从磁体通过磁体内的环形磁性构件到活塞杆并且通过穿过传感器绕组的尘埃管返回到磁体来限定闭合磁路。磁体下面的磁通同样通过气缸限制，不影响传感器绕组。绕组和活塞杆上的气隙不随轴向移动而变化; 并且随着轴向运动的磁链变化在整个线圈上是线性的。在线圈之间产生电压，该电压是车辆的簧上和非簧载质量之间的相对运动的强而准确的信号。

8. 发明授权

US09500253B2 Shock absorber system and method 有权
标题翻译：减震器系统及方法
公开(公告)号：US09500253B2
公开(公告)日：2016-11-22
申请号：US14353189
申请日：2011-12-31
申请人： Janusz Goldasz , Thomas W. Nehl , Zbigniew Szklarz
发明人： Janusz Goldasz , Thomas W. Nehl , Zbigniew Szklarz
IPC分类号： F16F9/44 , F16F9/348 , F16F9/46
CPC分类号： F16F9/446 , F16F9/3485 , F16F9/464
摘要： In shock absorber system 10, solenoid 18 varies the damping force by changing the position of spring seat 24, and the effective preload force, at the same time. In the normal, de-energized condition (with no current), damping forces are generated by the piston valve 30 including piston 20. The actuated valve spring 16 is relaxed and set in such a way that it applies only a minimum preload force to the rebound-side disc stack 28. The motion of the plunger 14, pin 32 and movable spring seat 24 assembly changes the spring force by varying the distance between the movable spring seat 24 and the stationary spring seat 22. In the energized state, applying current to coil 12 generates a pulling force on the plunger 14 in the direction of the core element 34 to attract plunger 14 towards the core 34 and across the initial gap 36 until it is in a direct contact with the core's surface 38. Maintaining plunger 14 at this position requires applying a continuous constant holding current to coil 12 so that the position of the plunger is preserved (and the high preload force at the same time). When current is no longer applied to the coil 12, then the pulling force is no longer generated, and the plunger assembly returns back to the original (soft) position due to the reverse action of the valve spring 16.
摘要翻译：在减震器系统10中，螺线管18通过改变弹簧座24的位置和有效的预载力同时改变阻尼力。在正常的断电状态（没有电流）时，包括活塞20的活塞阀30产生阻尼力。致动的阀弹簧16被松弛和设定，使得其仅对最小的预紧力施加到柱塞14，销32和可动弹簧座24组件的运动通过改变可动弹簧座24和固定弹簧座22之间的距离来改变弹簧力。在通电状态下，施加电流线圈12沿着芯元件34的方向在柱塞14上产生拉力，以将柱塞14朝着芯34吸引并穿过初始间隙36，直到其与芯的表面38直接接触。将柱塞14保持在该位置需要对线圈12施加连续恒定的保持电流，使得保持柱塞的位置（并且同时具有高的预紧力）。当电流不再施加到线圈12时，则不再产生拉力，并且由于阀弹簧16的反作用，柱塞组件返回到原始（软）位置。

9. 发明授权

US09163694B2 Bi-stable shock absorber assembly 有权
标题翻译：双稳定减震器总成
公开(公告)号：US09163694B2
公开(公告)日：2015-10-20
申请号：US13511004
申请日：2010-11-23
申请人： Janusz Goldasz , Thomas W. Nehl
发明人： Janusz Goldasz , Thomas W. Nehl
IPC分类号： F16F9/46
CPC分类号： F16F9/464 , F16F2222/06
摘要： A shock absorber assembly including a fluid for absorbing forces between the body and the wheel of a motor vehicle. The shock absorber includes a valve having a resilient disc engaging a piston for impeding the passage of fluid through the aperture of the piston. A bi-stable solenoid is disposed in the housing and is interconnected with the resilient disc of the valve. The bi-stable solenoid's armature is moveable between a first stable position for applying a first biasing force against the resilient disc of the valve and a second stable position for applying a second biasing force being less than the first biasing force against the resilient disc of the valve. The adjustment of the biasing force on the valve also adjusts the damping force of the shock absorber.
摘要翻译：一种减震器组件，包括用于吸收机体和车辆的车轮之间的力的流体。减震器包括具有接合活塞的弹性盘以阻止流体通过活塞的孔的阀。双稳态螺线管设置在壳体中并与阀的弹性盘相互连接。双稳电磁铁的电枢可在用于向阀的弹性盘施加第一偏压力的第一稳定位置和第二稳定位置之间移动，第二稳定位置用于施加小于第一偏压力的第二偏压力，阀。阀上的偏置力的调节也调节减震器的阻尼力。

10. 发明授权

US06866127B2 Piston damper assembly, and dust tube subassembly, having a velocity sensor 有权
标题翻译：活塞阻尼器组件和灰尘管子组件，具有速度传感器
公开(公告)号：US06866127B2
公开(公告)日：2005-03-15
申请号：US10643524
申请日：2003-08-19
申请人： Thomas W. Nehl , Fang Deng
发明人： Thomas W. Nehl , Fang Deng
IPC分类号： B60G17/019 , B60G17/027 , F16F9/32 , F16F9/38 , F16F9/512 , F16F9/53 , F16F15/03 , G01P3/52
CPC分类号： B60G17/01933 , B60G2204/112 , B60G2400/202 , B60G2400/252 , B60G2401/172 , F16F9/3292 , F16F9/38 , F16F9/535 , F16F2230/08 , G01P3/52
摘要： A piston damper assembly includes a piston damper and a relative velocity sensor. The piston damper includes a damper body, a piston rod, and a dust tube which is attached to the piston rod. The relative velocity sensor includes an axially extending first magnet supported by the dust tube, a flux collector, and a first sensor coil. The flux collector is supported by the dust tube, includes an axially-extending first prong in axially-extending contact with the first magnet, includes an axially-extending second prong, and includes a joining member connecting the first and second prongs. The first sensor coil surrounds the joining member and/or one of the first and second prongs. A piston-damper dust tube subassembly includes the dust tube and the relative velocity sensor.
摘要翻译：活塞阻尼器组件包括活塞阻尼器和相对速度传感器。活塞阻尼器包括阻尼体，活塞杆和附接到活塞杆的灰尘管。相对速度传感器包括由尘埃管支撑的轴向延伸的第一磁体，磁通收集器和第一传感器线圈。集尘器由灰尘管支撑，包括与第一磁体轴向延伸接触的轴向延伸的第一插脚，包括轴向延伸的第二插脚，并且包括连接第一和第二插脚的连接构件。第一传感器线圈围绕连接构件和/或第一和第二插脚中的一个。活塞阻尼器灰尘管子组件包括灰尘管和相对速度传感器。

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