-
1.发明授权
公开(公告)号：US5020564A
公开(公告)日：1991-06-04
申请号：US545689
申请日：1990-07-02
IPC分类号： G05D16/20
CPC分类号： G05D16/2053 , Y10T137/2544 , Y10T137/7761
摘要： A test stand having a control chamber with a fluid pressure therein for simulating an operational parameter of a device. A doser system with a controller which receives an input representing a desired pressure Px in the control chamber. The controller supplies either a first or second solenoid valve with an actuation signal to allow fluid pressure from a source to enter the control chamber or fluid from the control chamber to flow to the surrounding environment to change the fluid pressure in the control chamber form Pc to Pc'. A pressure transducer supplies the controller with a feedback signal corresponding to the actual fluid pressure Pc' in the control chamber. The controller derives an error signal (Px-Pc') to define an update for the actuation signal. As Pc' approaches Px, the duration of the actuation signal correspondingly changes to assure that the desired fluid pressure for the control chamber is achieved without exceeding the desired fluid pressure in a relatively short time period.
摘要翻译： 具有其中具有流体压力的控制室的测试台，用于模拟设备的操作参数。 一种具有控制器的加料器系统，其接收表示控制室中的期望压力Px的输入。 控制器向第一或第二电磁阀提供致动信号以允许来自源的流体压力进入控制室或来自控制室的流体流向周围环境，以将控制室形式Pc中的流体压力改变为 Pc'。 压力传感器向控制器提供与控制室中的实际流体压力Pc'相对应的反馈信号。 控制器导出误差信号（Px-Pc'）来定义致动信号的更新。 当Pc'接近Px时，致动信号的持续时间相应地改变，以确保在相对短的时间段内不超过期望的流体压力实现用于控制室的期望的流体压力。
-
公开(公告)号：US4276006A
公开(公告)日：1981-06-30
申请号：US958590
申请日：1978-11-07
CPC分类号： F16C37/00 , F01C21/06 , F01D25/125 , Y02T50/675
摘要： A system for cooling the bearings supporting the shaft of a rotor in a pneumatic motor powered with hot pressurized fluid. The rotor responds to the flow of hot fluid under pressure by moving to develop output power. The rotors which conduct heat from the hot fluid through the shaft and into the bearings have a series of peripheral axial slots adjacent the ends of the shaft. Fasteners engage the shaft to position the bearings over the series of axial slots. A manifold connects the slots to a discharge conduit. Some of the hot pressurized fluid is diverted through a nozzle in the discharge conduit to create a pressure differential between the manifold and the surrounding environment. This pressure differential draws air from the surrounding environment through the slots and into the manifold. The air on flowing through the slots absorbs heat from the shaft and the inside of the bearings to thereafter maintain the temperature of the bearing below the hot fluid.
摘要翻译： 一种用于在用热加压流体驱动的气动马达中冷却支撑转子轴的轴承的系统。 转子通过移动以产生输出功率来响应压力下的热流体的流动。 从热流体通过轴传导热量并进入轴承的转子具有与轴的端部相邻的一系列周向轴向槽。 紧固件接合轴以将轴承定位在一系列轴向槽上。 歧管将槽连接到排放管道。 一些热加压流体通过排放管道中的喷嘴转向，以在歧管和周围环境之间产生压力差。 该压力差从周围环境通过狭槽吸入空气并进入歧管。 流过狭槽的空气从轴和轴承的内部吸收热量，此后将轴承的温度保持在热流体之下。
-
公开(公告)号：US4632635A
公开(公告)日：1986-12-30
申请号：US686166
申请日：1984-12-24
CPC分类号： G01B13/12 , F01D11/24 , Y02T50/671
摘要： In a turbine engine (8) having a shaft (60) with turbine blades (24, 24', . . . 24.sup.N) thereon which rotate in a chamber (12) of the engine housing (10) to produce thrust in response to an operator input. A pneumatic sensor system (30) connected to said housing (10) for maintaining the space relationship between the tip (26, 26', . . . 26.sup.N) of the blades (24, 24', . . . 24.sup.N) and the wall (28) of housing 10 within set limits under varying operational conditions experienced by the turbine engine (8).
摘要翻译： 在具有其上具有涡轮叶片（24,24'，... 24N）的轴（60）的涡轮发动机（8）中，其在发动机壳体（10）的腔室（12）中旋转以响应于发动机壳体 操作员输入。 连接到所述壳体（10）的气动传感器系统（30），用于维持叶片（24,24'，... 24N）的尖端（26,26'，... 26N）与壁 （28）在涡轮发动机（8）经历的变化的操作条件下的设定限度内的壳体10（28）。
-
公开(公告)号：US4386553A
公开(公告)日：1983-06-07
申请号：US200869
申请日：1980-10-27
申请人： David C. Thoman , James M. Eastman
发明人： David C. Thoman , James M. Eastman
摘要： A control system 54 for a doser type hydraulic actuator 56 is disclosed. The doser actuator includes a pair of unequal area pistons 18, 20 on a common shaft 16 which are moved incrementally by injecting into or removing from a control pressure chamber metered quantities or doses of fluid. The doses are metered by timed openings of solenoid valves 32, 34 connecting the control pressure chambered to a supply 44 or return 48 pressure sources. The control system includes a base pulse width signal generator 106 which pulse modulates the solenoids as a function of the error between a requested position and an actual position. The base pulse width is modified by a correction means 108, 110, 112 when the error is within a predetermined band width. The correcting means compensates for the reaction of the actuator when its response is uncertain with respect to the base pulse width.
摘要翻译： 公开了一种用于加料器型液压致动器56的控制系统54。 加料器致动器包括在公共轴16上的一对不相等的活塞18,20，它们通过注入或从控制压力室中移出计量量或剂量的流体来逐渐移动。 剂量由电磁阀32,34的定时开口计量，电磁阀32,34将控制压力连接到电源44或返回48个压力源。 控制系统包括基本脉冲宽度信号发生器106，其根据请求位置和实际位置之间的误差脉冲调制螺线管。 当误差在预定带宽内时，校正装置108,110,112修改基本脉冲宽度。 当其响应相对于基本脉冲宽度不确定时，校正装置补偿致动器的反作用力。
-
公开(公告)号：US4373858A
公开(公告)日：1983-02-15
申请号：US214902
申请日：1980-12-10
申请人： James M. Eastman
发明人： James M. Eastman
IPC分类号： F01D11/02 , F16J15/447 , F01D11/04
CPC分类号： F16J15/4474 , F01D11/025
摘要： A valve arrangement responsive to a pressure differential continuously throttles air flowing through a labyrinth seal, allowing only a small fraction of the leakage that would otherwise occur. The arrangement accomodates radial and axial shaft displacement without rubbing contact. This avoids seal wear for high shaft rotating speeds, high temperatures and/or rapid temperature changes.
摘要翻译： 响应于压力差的阀装置连续地节流流过迷宫式密封件的空气，仅允许出现另外一部分渗漏。 该装置适应径向和轴向轴位移而无摩擦接触。 这避免了高轴旋转速度，高温和/或快速温度变化时的密封磨损。
-
公开(公告)号：US4442928A
公开(公告)日：1984-04-17
申请号：US307737
申请日：1981-10-02
申请人： James M. Eastman
发明人： James M. Eastman
IPC分类号： F16H25/20 , B64C13/28 , B64C13/40 , F02K1/76 , F15B15/14 , F15B15/26 , B60K41/20 , F16D71/00 , F16D7/02
CPC分类号： F15B15/264 , B64C13/28 , F02K1/76 , F02K1/763 , F15B2015/1495 , Y10T477/814
摘要： In an actuator system (10) having an air motor (12) for supplying a ball-screw actuator (14) with rotary input. The ball screw actuator (12) has a friction clutch mechanism (206) that limits the torque applied to the screw (176) when the ball nut (166) reaches first and second extreme positions. Thus, the maximum output from the air motor (12) can be applied to ball screw actuator (14) without braking before the positions are reached. A torsion bar and a cam 274 act to regulate the clutch (206) slipping torque to narrow limits, thereby easing strength requirements in the actuation mechanism (10).
摘要翻译： 在具有用于向滚珠丝杠致动器（14）提供旋转输入的空气马达（12）的致动器系统（10）中。 滚珠丝杠致动器（12）具有摩擦离合器机构（206），其限制当球螺母（166）到达第一和第二极限位置时施加到螺钉（176）的扭矩。 因此，在到达位置之前，可以不用制动将来自气动马达（12）的最大输出施加到滚珠丝杠致动器（14）。 扭杆和凸轮274用于将离合器（206）滑动扭矩调节到窄限制，从而减轻致动机构（10）中的强度要求。
-
公开(公告)号：US4213741A
公开(公告)日：1980-07-22
申请号：US950954
申请日：1978-10-13
CPC分类号： F04C15/062 , F02C9/38 , F04F5/48 , Y10T137/2579
摘要： A variable flow ejector for use in controlling the amount of bypass flow in a fluid delivery system which includes a pump, a metering orifice and a bypass line for circulating a variable amount of flow from the pump outlet to the pump inlet to control the pressure drop across the orifice. The bypass flow enters the ejector through a variable area nozzle coaxially disposed with respect to a stream from a source of fluid whereby the velocity head of the bypass flow is recovered as pressure head at the pump inlet for increased efficiency. The bypass flow is controlled by varying the area of the ejector nozzle as a combined function proportional to the pressure drop across the orifice plus the time integral of the error in the pressure drop across the orifice.
摘要翻译： 一种可变流量喷射器，用于控制流体输送系统中的旁路流量，其包括泵，计量孔和旁路管线，用于将可变量的流量从泵出口循环到泵入口以控制压降 穿过孔。 旁通流通过相对于来自流体源的流同轴设置的可变区域喷嘴进入喷射器，由此旁路流的速度头作为压力头在泵入口处被回收以提高效率。 通过改变喷射器喷嘴的面积来控制旁路流量，该组合函数与孔口两端的压降成正比，加上孔口上的压降误差的时间积分。
-
公开(公告)号：US4742465A
公开(公告)日：1988-05-03
申请号：US812050
申请日：1985-12-23
申请人： James M. Eastman
发明人： James M. Eastman
摘要： The invention is a control system for generating time modulated pulse signals to effect movement of a doser type actuator. The control system is characterized in that it includes an augmenter circuit which generates a first correction signal additive to scheduled control signals when the actuator fails to respond or has a response below a predetermined limit to an actuating pulse, a second correction circuit which generates a correction signal proportional to the magnitude of the first movement of the actuator response to a pulse signal for reducing the magnitude of the pulse signal in proportion to the magnitude of the movement, and a gating signal or circuit which blocks said first and second correction signal generating circuits generating the augmentation signal when the movement of the actuator in response to a pulse signal is negative or above a predetermined limit, when the positional error changes direction, or when the actuator position is within the desired deadband limits.
摘要翻译： 本发明是一种用于产生时间调制脉冲信号以实现加料器型致动器的运动的控制系统。 所述控制系统的特征在于，其包括增益电路，当所述致动器不能响应或响应低于启动脉冲的预定极限时，所述增强器电路产生第一校正信号添加到调度控制信号;产生校正的第二校正电路 与致动器响应于脉冲信号的第一移动的幅度成比例的信号，用于与移动的幅度成比例地减小脉冲信号的幅度;以及门控信号或电路，其阻塞所述第一和第二校正信号发生电路 当致动器响应于脉冲信号的移动为负或高于预定极限时，当位置误差改变方向时，或者当致动器位置在期望的死区限度内时，产生增强信号。
-
公开(公告)号：US4651621A
公开(公告)日：1987-03-24
申请号：US842083
申请日：1986-03-20
申请人： James M. Eastman
发明人： James M. Eastman
CPC分类号： F15B21/087 , Y10T137/87209
摘要： A control system (10) for supplying an operational chamber (38) in an air motor with pressurized fluid causing rotors (18 and 20) therein to move and develop an output torque in response to an input signal. Electrically operated valves (52 and 54) selectively controlling the flow of fluid from first and second bellows means (48 and 50) which are normally seated to seal distribution conduit (34 and 36) connecting the operational chamber (38) to the atmosphere. A select high disc valve (104) in the fluid pressure supply passage provides operating fluid to the distribution conduit (34 or 36) opposite the one which is vented to the atmosphere. In a two position air motor powered actuator, the electrical signals for the valves (52 and 54) may be derived as a simple function of actual rotor rotation and rotor rotational speed. As the total number of rotations approaches a set number, the scheduled rotational speed approaches zero, and the signal to the valves (52 and 54 ) terminates and allows the bellows means (48 and 50) to reseal the distribution conduit (34 or 36) as needed to stop rotor motion or slow it enough to assure stop engagement without excessive impact force. For other actuator applications, the signals to valves (52 and 54) may be provided by control means as used for a doser actuator piston controller (Reference U.S. Pat. No. 4,386,553).
摘要翻译： 一种控制系统（10），用于在气动马达中向所述加压流体提供运转室（38），所述加压流体使其中的转子（18和20）响应于输入信号而移动和产生输出转矩。 电动阀（52和54）选择性地控制来自第一和第二波纹管装置（48和50）的流体流动通常位于将操作室（38）连接到大气的密封分配导管（34和36）上。 流体压力供应通道中的选择高盘阀（104）将工作流体提供给与排放到大气中的分配导管（34或36）相对的分配导管（34或36）。 在两位气动马达驱动的致动器中，阀（52和54）的电信号可以作为实际转子旋转和转子旋转速度的简单函数得出。 当总转数接近设定数量时，预定转速接近零，并且向阀（52和54）发出的信号终止并允许波纹管装置（48和50）重新密封分配管道（34或36） 根据需要停止转子运动或将其减慢到足以确保停止接合而没有过大的冲击力。 对于其他致动器应用，对阀（52和54）的信号可以由用于配量器致动器活塞控制器的控制装置提供（参考美国专利号4,386,553）。
-
公开(公告)号：US4640093A
公开(公告)日：1987-02-03
申请号：US771756
申请日：1985-09-03
申请人： James M. Eastman
发明人： James M. Eastman
CPC分类号： G05D7/0635 , F02C9/263 , F05D2200/11
摘要： A metering valve (20) for supplying a turbine engine with a fuel at a substantially constant flow rate in response to operational conditions evaluated by a computer (28). A signal from the computer (28) in the form of voltage pulses is supplied to a solenoid (30). The solenoid (30) regulates the flow of fuel from a control chamber (54) to produce a fuel pressure P.sub.x therein. The fuel enters a supply chamber (46) and the fuel pressure P.sub.1 thereof acts on the effective area of a first diaphragm (42) to move face (70) on plunger (68) away from seat (38) in opposition to a closing force generated by the fluid pressure P.sub.x acting on a second diaphragm (48). A feedback valve (90) regulates the flow of fuel from supply chamber (46) to control chamber (54). By making the size of the first diaphragm (42) one half the size of the second diaphragm (48) when P.sub.x is equal to one half of the sum of fuel pressures P.sub.1 and P.sub.2, an equilibrium condition exists and fuel is supplied to the outlet conduit (40) at a substantially constant rate for distribution to a turbine engine.
摘要翻译： 一种计量阀（20），用于响应于由计算机（28）评估的操作条件，以基本恒定的流量向涡轮发动机供应燃料。 来自计算机（28）的以电压脉冲形式的信号被提供给螺线管（30）。 螺线管（30）调节来自控制室（54）的燃料流，以在其中产生燃料压力Px。 燃料进入供应室（46），其燃料压力P1作用在第一隔膜（42）的有效区域上，以使活塞（68）上的面（70）远离座位（38），与封闭力 由作用在第二隔膜（48）上的流体压力Px产生。 反馈阀（90）调节从供应室（46）到控制室（54）的燃料流。 当Px等于燃料压力P1和P2的总和的一半时，通过使第一隔膜（42）的尺寸成为第二隔膜（48）的尺寸的一半，存在平衡条件并且燃料被供应到出口 导管（40）以基本上恒定的速率分配到涡轮发动机。
-
-
-
-
-
-
-
-
-
搜索结果
12 条记录 (耗时 0.022 秒)
