摘要:
Rotary dampers and systems for use and installation within a rotary winged aircraft, and related methods, are provided herein. In some aspects, a rotary damper includes a housing having a rotor assembly positioned inside the housing. The rotary damper may further include at least one resilient member disposed adjacent to an outer portion of the housing. The at least one resilient member is externally visible from outside of the rotary damper. In some aspects, the resilient member includes a torsional spring of the rotary damper. In certain aspects, the resilient member is disk shaped and slidable within a portion of the rotary damper. In some aspects, at least one primary liquid orifice is provided in a portion of the at least one rotor member. In some asects, at least one pressure equalization port is disposed within a portion of the rotor assembly.
摘要:
A controllable secondary suspension system (20) for vehicle cabs (18) and the like which flexibly suspends and controls movement of the vehicle's cab (22) relative to the vehicle's frame (24). The system (20) includes at least one flexible support (26), which are preferably two spaced apart air springs flexibly suspending the cab (22) relative to the frame (24), at least one controllable fluid damper, and preferably two spaced-apart controllable fluid dampers, such as Magnetorheological (MR) fluid dampers (28, 28'), interconnected between the cab (22) and the frame (24). In one aspect, the system (20) may include at least one sensor, such as a relative position sensor (30), for providing relative vibration information between the cab (22) and the frame (24), and a controller (36) for processing the relative vibration information to determine current to be supplied to the controllable fluid damper (28) to control the degree of damping thereof. Signals from additional sensors, such as a speed sensor (32), steering angle sensor (34), brake sensor (46), throttle position sensor (48), and vertical and lateral acceleration sensors (40, 44) may be used to enhance control. Roll, pitch, lurch and ride may be simultaneously or independently controlled.
摘要:
Rotary dampers and systems for use and installation within a rotary winged aircraft, and related methods, are provided herein. In some aspects, a rotary damper includes a housing having a rotor assembly positioned inside the housing. The rotary damper may further include at least one resilient member disposed adjacent to an outer portion of the housing. The at least one resilient member is externally visible from outside of the rotary damper. In some aspects, the resilient member includes a torsional spring of the rotary damper. In certain aspects, the resilient member is disk shaped and slidable within a portion of the rotary damper. In some aspects, at least one primary liquid orifice is provided in a portion of the at least one rotor member. In some aspects, at least one pressure equalization port is disposed within a portion of the rotor assembly.
摘要:
A vehicle suspension mount (20) for connection of a first vehicle body—structure (22) with a second vehicle body structure (24). The mount including a suspension mount damping liquid damper pumper member (42). An inner elastomeric shaft support assembly (52) including an inner elastomeric surface effect damper member (54) bonded with an inner nonelastomeric grounding member (56), the inner nonelastomeric grounding member (56) grounding the inner elastomeric surface effect damper member (54) with a first outer container member (26), with the inner elastomeric surface effect damper member (54) engaging a shaft nonelastomeric surface effect damper member (60), the inner elastomeric surface effect damper member (54) in alignment with a nonelastomeric center axial shaft axis (36) wherein a nonelastomeric center axial shaft (30) translates relative to the inner elastomeric surface effect damper member (58) with the inner elastomeric surface effect damper member (58) engaging the shaft nonelastomeric surface effect damper member (60) damping translation of the shaft nonelastomeric surface effect damper member (60) along the inner elastomeric surface effect damper member.
摘要:
A powered construction ground compactor for use by a worker compacting a construction foundation material. The powered construction ground compactor includes a lower foundation interfacer for interfacer engaging the construction foundation to be compacted, a powered compacting large moving mass, the powered compacting large moving mass forcing the foundation interfacer into construction foundation material to be compacted, an upper handle for holding by the worker compacting the construction foundation material, a handle moving mass vibration absorber, the handle moving mass vibration absorber including a moving mass, the moving mass movingly coupled to the upper handle wherein the moving mass oscillates relative to said compacting moving mass.
摘要:
A vehicle suspension mount for connection of a first vehicle body structure with a second vehicle body structure, the mount including a first outer container member, a second outer cap member, the second outer cap member having a nonelastomeric center axial shaft and an outer elastomeric cap with the outer elastomeric cap grounded radially outward to the first outer container member, the nonelastomeric center axial shaft longitudinally extending inward into the first outer container member along a shaft axis, with the nonelastomeric center shaft having a terminal end distal from the outer elastomeric cap. The first outer container member and the second outer cap member contain a suspension mount damping liquid, a suspension mount damping liquid damper pumper member, the suspension mount damping liquid damper pumper member fixed to the nonelastomeric center shaft proximate the terminal end, and an inner elastomeric bearing support assembly disposed in the first outer container member between the suspension mount damping liquid damper pumper member and the second outer cap member, the inner elastomeric bearing support assembly including an inner elastomeric member bonded with an inner nonelastomeric grounding member, the inner nonelastomeric grounding member grounding the inner elastomeric member with the first outer container member, with the inner elastomeric member supporting a low friction bearing against a bearing surface of the nonelastomeric center shaft, the low friction bearing in alignment with the nonelastomeric center axial shaft axis wherein the nonelastomeric center axial shaft translates along the low friction bearing with the suspension mount damping liquid damper pumper member pumping the suspension mount damping liquid.
摘要翻译:一种用于将第一车身结构与第二车身结构连接的车辆悬架,所述安装件包括第一外容器构件,第二外盖构件,所述第二外盖构件具有非弹性中心轴和外弹性盖 其中外弹性体帽径向向外接合到第一外容器构件,非弹性中心轴线轴沿着轴线向内纵向延伸到第一外容器构件内,而非弹性中心轴具有远离外弹性体盖的终端。 第一外部容器构件和第二外部盖构件包括悬挂安装阻尼液体,悬挂安装阻尼液体阻尼器泵构件,悬挂安装阻尼液体阻尼器泵构件,其固定到靠近终端的非弹性中心轴,以及内部弹性体 轴承支撑组件,其布置在第一外部容器构件中,位于悬架安装阻尼液阻尼器泵构件和第二外盖构件之间,内部弹性体轴承支撑组件包括与内部非弹性接地构件接合的内部弹性体构件,内部非弹性接地构件 将内部弹性体构件与第一外部容器构件接地,内部弹性体构件支撑抵靠非弹性中心轴的轴承表面的低摩擦轴承,低摩擦轴承与非弹性中心轴向轴线对准,其中非弹性中心轴向 sh 后部沿着低摩擦轴承转动,悬架安装阻尼液阻尼器泵构件泵送悬架安装阻尼液。
摘要:
A method for automatically calibrating a controller (44) for a controllable damping system (40), for example, the suspension and damping system for a truck seat or cab, includes the steps of receiving a initiation signal that is checked against criteria to ensure that calibration is actually intended. The seat (20) or other body (ex. a vehicle cab) is then moved to a first limit position, where a sensor (50, 50') reads a position signal, and to a second limit position, where another position signal is read. Preferably, a midpoint, or neutral position is calculated from the measured position signals, and the seat (20) or other body is moved to this neutral position. A range of movement is determined from the first and second position signals. Preferably, end stop limits are calculated as predetermined fractions of the range of movement value. All values are stored for use by the controllable damper system (40).
摘要:
The invention relates to magnetorheological (MR) fluid devices and the process of controlling the force in exercise equipment by utilizing the MR fluid devices. The MR fluid devices include rotary and linear acting varieties and are useful for controlled forces in exercise bicycles, recumbent exercisers, ski machines, rowing machines, and stair stepper machines. The rotary MR fluid device is comprised of a rotor supported by bearings and received within a housing. An MR fluid is received adjacent the rotor and within a cavity in the housing and the MR fluid is controlled by an applied magnetic field to vary the operating torque resistance. Spring biasing the rotor allows for relaxed tolerances. Optimization of the Ri/Ro ratio is described which reduces the size and weight of the device. The linear acting version utilizes simple extensible pumps and an external MR fluid valve to provide a modularized system.
摘要:
A semi-active control method for a controllable fluid damper used in seat supports. The present method filters a relative displacement signal phase shifting the relative displacement sine wave by an angle from greater than 0.degree. through an angle less than 90.degree. to get a relative rate. The sign of the relative rate is compared to that of an absolute velocity curve obtained by integrating the absolute acceleration value obtained by an accelerometer attached to the controlled seat. If the signs are the same, the output to the damper is set to a minimum; if the signs are different, the value is set at the absolute velocity multiplied by an input gain. Endstop limits can be implemented with this control method.
摘要:
An aircraft rotary wing motion control fluid device providing motion control and with wireless sensing of at least one fluid property inside the fluid device is provided. The wireless sensing system is integrated with at least one of the first and second aircraft rotary wing motion control fluid device bodies. The wireless sensing system includes at least one fluid property sensor in sensing proximity to the at least one fluid chamber and a communications device for wirelessly conveying a measurement made by the at least one fluid property sensor to a remote location.