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    • 36. 发明申请
    • PRECISION SERVO CONTROL SYSTEM FOR A PNEUMATIC ACTUATOR
    • 气动执行器精密伺服控制系统
    • WO01031205A1
    • 2001-05-03
    • PCT/US2000/029877
    • 2000-10-27
    • F15B9/09F15B9/14F15B15/08F15B15/12F15B15/26F15B13/16
    • F15B15/12F15B9/09F15B9/14F15B15/082F15B2211/3057
    • A precision servo control system for a pneumatic actuator has a piston (5) positionable over a stroke of the pneumatic actuator (2) using a supply of pressurized gas. A brake (52) and a sensor system (44) are connected to the actuator (2) and to the servo control system. The servo control system operates to initiate the forward thrust from the pressurized gas to move the piston (5) along the stroke. When a braking point along the stroke is determined, the servo control system initiates a reverse thrust from the pressurized gas while maintaining the forward thrust and simultaneously begins to selectively apply the brake (52) to stop the piston within a predetermined tolerance of a desired stopping position. The precision servo control system is easily programmable in a manner similar to that of a control system for electrical actuators. The precision servo control system can maintain the predetermined tolerance even under changing loads, long stroke lengths or vertically oriented stroke directions. The precision control servo system preferably utilizes simple directional valves, instead of complex and expensive servo valves, to regulate the pressurized gas. The precision servo control system achieves positional accuracy to a predetermined tolerance that is a fixed value, regardless of the stroke length.
    • 用于气动致动器的精密伺服控制系统具有可使用加压气体供应而在气动致动器(2)的行程上定位的活塞(5)。 制动器(52)和传感器系统(44)连接到致动器(2)和伺服控制系统。 伺服控制系统操作以启动来自加压气体的向前推力以沿着行程移动活塞(5)。 当确定了沿行程的制动点时,伺服控制系统在保持向前推力的同时开始加压气体的反向推力,并同时开始选择性地施加制动器(52)以将活塞停止在预定的公差范围内 位置。 精密伺服控制系统以类似于用于电动执行器的控制系统的方式易于编程。 即使在变化的负载,长行程长度或垂直取向的行程方向上,精密伺服控制系统也能够保持预定的公差。 精密控制伺服系统优选地使用简单的方向阀而不是复杂和昂贵的伺服阀来调节加压气体。 精密伺服控制系统将位置精度达到固定值的预定公差,而与行程长度无关。
    • 37. 发明申请
    • DEVICE FOR ADJUSTING THE RELATIVE ANGULAR POSITION OF TWO MUTUALLY ARTICULATED STRUCTURES, PARTICULARLY FOR CHAIRS, SEATS OR THE LIKE
    • 用于调整两个关键结构的相对角度位置的装置,特别是椅子,座椅或类似物
    • WO01024662A1
    • 2001-04-12
    • PCT/IT2000/000381
    • 2000-09-28
    • A47C1/024A47C3/30F15B7/00A47C3/00B25J17/02F15B15/12
    • A47C3/30A47C1/0244F15B7/005F15B7/008
    • A device for adjusting the relative angular position of two mutually articulated structures comprising a first and a second element (5, 6) respectively connected to said structures, that rotate mutually around the axis of articulation of said structures and that define two chambers between them whose volume varies inversely as a result of the relative rotation of said elements. Said variable-volume chambers are connected together by conduits (3). The chambers and the conduits are filled with a fluid that flows from one chamber to the other through the conduits as a result of the relative rotation of the two elements around their axis of articulation. Valves are provided for interrupting communication through said conduits (3), so as to prevent the passage of fluid from one chamber to the other and consequently lock the two elements in any relative position to which they have been adjusted.
    • 一种用于调节两个相互关联的结构的相对角位置的装置,包括分别连接到所述结构的第一和第二元件(5,6),所述第一和第二元件相互围绕所述结构的铰接轴线旋转,并且在它们之间限定两个室 体积由于所述元件的相对旋转而相反地变化。 所述可变容积室通过导管(3)连接在一起。 由于两个元件围绕其关节轴线的相对旋转,腔室和导管填充有通过导管从一个腔室流动到另一个腔室的流体。 阀被设置用于通过所述导管(3)中断连通,以便防止流体从一个腔室通到另一个腔室,从而将两个元件锁定在它们被调节到的任何相对位置。
    • 38. 发明申请
    • UNITARY ELECTRO-HYDRAULIC ROTARY ACTUATOR FOR AUTOMOTIVE CONVERTIBLE TOP
    • 用于汽车可转换顶级的电动液压旋转执行机构
    • WO1996015375A1
    • 1996-05-23
    • PCT/US1995012995
    • 1995-10-02
    • APPLIED POWER INC.
    • APPLIED POWER INC.YU, Xudong
    • F15B15/12
    • B60J7/1273F15B15/12F15B2211/20561
    • A self-contained rotary actuator assembly (10R, 10L) has a pump assembly (36), a precharged hydraulic circuit, and a rotary vane actuator (30) in a single unit. The pump assembly (36) is a bi-directional electric motor driven gerotor pump which is manifolded to a module assembly (32) in which the control elements of the hydraulic circuit are housed. Upon the application of the pressure for driving the rotary actuator (30) in either direction, a pilot operated hydraulic valve (154) is shifted so as to communicate the rotary actuator (30) with the pump (36). After the pump (36) is turned off, an orifice (200) for the pilot chamber (175) of the valve (154) bleeds the pilot chamber (175) slowly so as to provide a delay in which the rotary actuator (30) holds the convertible top extended or retracted to give the vehicle operator time to latch the top in its closed or open position. In addition, a gas charged precharge chamber (122) in the hydraulic circuit maintains a precharge through a broad range of temperatures.
    • 独立的旋转致动器组件(10R,10L)在单个单元中具有泵组件(36),预充电液压回路和旋转叶片致动器(30)。 泵组件(36)是双向电动机驱动的运转泵,其汇合到模块组件(32)中,其中容纳有液压回路的控制元件。 当施加用于沿任一方向驱动旋转致动器(30)的压力时,先导操作的液压阀(154)移动,以使旋转致动器(30)与泵(36)连通。 在泵(36)关闭之后,用于阀(154)的先导室(175)的孔口(200)缓慢地排出先导室(175),从而提供旋转致动器(30)的延迟, 保持敞篷车顶部延伸或缩回,以使车辆操作员有时间将顶部锁定在其关闭或打开位置。 此外,液压回路中的充气预充气室(122)通过宽范围的温度保持预充电。
    • 39. 发明申请
    • DIGITAL SUSPENSION SYSTEM
    • 数字悬挂系统
    • WO9111339A3
    • 1992-04-02
    • PCT/CA9100026
    • 1991-01-31
    • UNIV BRITISH COLUMBIA
    • DUNWOODY ANDREW BRUCE
    • B60G17/00B60G17/015B60G17/04F16F9/10B60G17/01F15B15/12F15B15/14
    • B60G17/0152B60G2202/413B60G2400/102B60G2400/104B60G2400/106B60G2400/25B60G2400/60B60G2500/102B60G2600/26B60G2600/76F16F9/10
    • A digital suspension system for a wheeled vehicle incorporates digital hydraulic actuators (42) at each wheel and includes a system for sensing lateral and longitudinal accelerations (18, 24) of a body portion of the vehicle and the position of each wheel (10, 12, 14, 16) relative to the body and provides this information to a computer (28). The computer computes the forces required at each wheel and controls the digital hydraulic actuator at each wheel by adjusting in increments the force applied at each actuator between the wheel and the body to maintain the body portion of the vehicle in a substantially stable position. Preferably the hydraulic actuator used in the suspension system will be formed by an assembly including a first element, a cylinder, a body section and a chamber. The first element is provided with a first set of a plurality of different sized piston cavities and piston elements which cooperate with a second set of piston elements and piston cavities respectively formed on a second element. The second element forms a piston in cylinder. The body sides incorporate, preferably in symmetrical relationship around the axis, of the assembly a plurality of valves, one valve for each of the pairs of cooperating pistons and cavities. A piston divides the chamber into a high pressure reservoir and a low pressure reservoir with the piston being urged toward the high pressure reservoir to maintain a difference in pressure between the high and low pressure reservoirs. Passages connect each of the valves to the high and low pressure reservoir and each of said cavities with its respective valve adapted to selectively connect its respective cavity to either the high pressure reservoir or the low pressure reservoir.