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    • 3. 发明公开
    • METHOD AND APPARATUS FOR MEASURING DYNAMIC LOAD
    • VERFAHREN UNDGERÄTZUR MESSUNG DES DYNAMISCHEN GEWICHT。
    • EP0662604A1
    • 1995-07-12
    • EP94914625.2
    • 1994-05-16
    • KYOEI AUTOMATIC CONTROL TECHNOLOGY CO., LTD.TADA, Eiichi
    • TADA, EiichiWATANABE, Kazuo
    • G01G9/00G01G23/01G01G23/37G01G23/10
    • G01G23/10G01G3/00G01G23/01
    • A method and apparatus for measuring a dynamic load without being influenced by vibrations caused by the apparatus itself and the environment. A DLS (the main body of a dynamic load sensor) (10) is periodically vibrated by the reciprocation of a slide base (4) and the vertical movement of a base plate (9). In the DLS (10), one end of a member constituting a spring system is fixed to the base of a non-spring system: the other end is free. A load is applied to the free end of the member constituting the spring system. The base is periodically vibrated continuously together with the member constituting the spring system. The displacement y₁ of the base, and the displacement y₂ of the free end are continously measured. By using the first derivatives y₁ and y₂ and the second derivatives ÿ₁ and ÿ₂ of the displacements y₁ and y₂, the mass m of the load is calculated by the following equation: m[ÿ]=mg-[(mg+kf₂(y-y₁+y₂))-f₃( y ̇ - y ̇ ₁+ y ̇ ₂)+f₁(mÿ₁,mÿ₂)] (where the symbol [] represents a determinant having terms the number of which is equal to the product of the number of degrees of freedom by the number of data, g is the acceleration of gravity, kf₂(y-y₁+y₂) is the material constant of the member constituting the spring system, k is a constant of proportionality, f₃(y-y₁+y₂) is an attenuation term expressing the attenuation such as by viscosity, friction, hysteresis, fluid resistance, or transient state added resistance, and f₁(mÿ₁,mÿ₂) is the vibromotive force).
    • 一种用于测量动态载荷而不受设备本身和环境引起的振动的影响的方法和装置。 DLS(动态负载传感器的主体)(10)通过滑动基座(4)的往复运动和基板(9)的垂直运动而周期性地振动。 在DLS(10)中,构成弹簧系统的构件的一端固定在非弹簧系统的底座上:另一端是空的。 负载被施加到构成弹簧系统的构件的自由端。 基座与构成弹簧系统的构件一起周期性地振动。 基座的位移y1和自由端的位移y2被连续地测量。 通过使用位移y1和y2的一阶导数y1和y2以及二次导数ij1和ij2,负载的质量m通过下式计算:m [ij] = mg - [(mg + kf2(y- y1 + y2)) - f3(y /<.- y / ... 1 + y / ... 2)+ f1(mij1,mij2)](其中符号[]表示具有项数 这等于自由度数乘以数据的乘积,g是重力加速度,kf2(y-y1 + y2)是构成弹簧系统的构件的材料常数,k是常数 f3(y-y1 + y2)是表示衰减的衰减项,例如粘度,摩擦,滞后,流体阻力或瞬态增加电阻,f1(mij1,mij2)是振动体力)。
    • 4. 发明公开
    • METHOD AND APPARATUS FOR MEASURING DYNAMIC LOAD, AND LOAD MEASURING EQUIPMENT USING THEM
    • 方法和设备测量动态以及重测量设备在使用本设备。
    • EP0557528A1
    • 1993-09-01
    • EP92918517.1
    • 1992-08-27
    • KYOEI AUTOMATIC CONTROL TECHNOLOGY CO., LTD.TADA, Eiichi
    • TADA, EiichiWATANABE, Kazuo
    • G01G9/00G01G23/01G01G23/37G01G23/06
    • G01G3/12G01G3/16G01G21/24G01G23/06
    • A method and apparatus for measuring a load under a dynamic state where variations such as swinging and vibration exist. One of the ends of a member constituting a spring system is fixed with the other end free. A stationary load We is calculated in accordance with equation (I) by attaching a load to the free end and measuring the instantaneous displacement Yi. In the equation (I), Wi is the instantaneous load, g is gravitational acceleration, Δg (A/L)i is the acceleration of the free end obtained by differentiating twice the displacement Yi, and k is a spring constant. When a base to which the member constituting the spring system is fixed undergoes variations such as swinging and vibration the stationary load We is determined by (II) where Δg (G/L)i is the acceleration of variation of the base.
    • 如摆动和振动存在:一种用于其中的变化的动态状态下,测量负荷的方法和设备。 一个构成一弹簧系统中的构件的端部的被固定自由的另一端。 固定负载我们在等式(I)雅舞蹈通过附加的负载到自由端和测量的瞬时位移易计算。 在等式(I),W 1是瞬时负载,g是重力加速度,克DELTA(A / L)i是自由端通过微分两次位移易获得的加速度,以及k是弹簧常数。 当一个基座,构成弹簧系统被下固定构件前进的变化:如摆动和振动的静止负载我们是确定性由开采(II)其中DELTA克(G / L)i是碱的变化的加速度。