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    • 2. 发明授权
    • Digital servo employing switch mode lead/lag integrator
    • 数字伺服采用开关模式导联/滞后积分器
    • US4893068A
    • 1990-01-09
    • US271477
    • 1988-11-15
    • Daniel D. Evans, Jr.
    • Daniel D. Evans, Jr.
    • G05B19/23
    • G05B19/232G05B2219/37313G05B2219/41177G05B2219/41434G05B2219/42035G05B2219/42104
    • A digital servo system for causing a mechanical element (48) to track a desired path and hold various positions along the path and employing a lead/lag integrator (18) in parallel with a feedback control loop. The input to the integrator (18) is switched between velocity (V.sub.EK) error during pathtracking and position error (E.sub.K) during holding to increase the resistance of the mechanical element (48) to position changes caused by outside forces during both pathtracking and holding. The integrator function employed uses a term (U.sub.integrator(k-1)) representing a previous integrator output value to assist in smoothing perturbations caused by switching between position and velocity error.
    • 一种数字伺服系统,用于使机械元件(48)跟踪所需路径并保持沿着路径的各种位置并且采用与反馈控制回路并联的引导/滞后积分器(18)。 积分器(18)的输入在轨迹跟踪期间的速度(VEK)误差和保持期间的位置误差(EK)之间切换,以增加机械元件(48)的阻力,以便在轨迹跟踪期间由外力引起的位置变化。 所采用的积分器功能使用表示先前积分器输出值的项(Uintegrator(k-1))来协助由位置和速度误差之间的切换引起的平滑扰动。
    • 3. 发明授权
    • Servo motor control apparatus
    • 伺服电机控制装置
    • US5134354A
    • 1992-07-28
    • US623410
    • 1990-12-03
    • Yoichi YamamotoTakayuki TohyaYoshiji Hiraga
    • Yoichi YamamotoTakayuki TohyaYoshiji Hiraga
    • G05B19/23
    • G05B19/237G05B19/231G05B2219/37313G05B2219/41084G05B2219/41421G05B2219/42034G05B2219/42035G05B2219/42062G05B2219/42096
    • When a workpiece is cut or otherwise machined by a machine using a servo motor control apparatus having a position feedback loop, a velocity feedback loop, and a current feedback loop, it is the common practice to preset the instructed current value to a voltage corresponding to friction torque when rotation of the motor is started or reversed. This is to compensate for the response delay of the motor introduced by the friction torque. The present invention relates to improvements in this technique. After the instructed motor velocity changes from a positive value, to a negative value or vice versa, or after the detected motor velocity changes from a positive value to a nonpositive value or from a negative value to a nonnegative value, the value of the integration element of a velocity control portion is reversed according to a function. The obtained output value is added to the instructed current value or to the integration term to compensate for the response delay, thus reducing machining error.
    • PCT No.PCT / JP90 / 00472 Sec。 371日期1990年12月3日第 102(e)日期1990年12月3日PCT 1990年4月6日提交PCT公布。 出版物WO90 / 12448 1990年10月18日,当使用具有位置反馈回路,速度反馈回路和电流反馈回路的伺服电机控制装置切割或以机械加工工件时,通常的做法是预设指示 电流值与电动机旋转开始或反转时对应于摩擦转矩的电压。 这是为了补偿由摩擦转矩引入的电动机的响应延迟。 本发明涉及该技术的改进。 在指示的电动机速度从正值变为负值或反之亦然之后,或者在检测到的电动机速度从正值变为非正值或从负值变为非负值之后,积分元件的值 的速度控制部分根据功能反转。 将获得的输出值加到指定的当前值或积分项,以补偿响应延迟,从而减少加工误差。
    • 4. 发明授权
    • Servo control apparatus
    • 伺服控制装置
    • US4967124A
    • 1990-10-30
    • US375680
    • 1989-07-05
    • Masanori Hirai
    • Masanori Hirai
    • B64C13/40B64C13/42F15B9/09G05B19/35
    • G05B19/351B64C13/42G05B2219/37133G05B2219/37285G05B2219/37401G05B2219/41301G05B2219/42035
    • In a servo control apparatus wherein a load is controlled by a deviation between a command signal corresponding to a target value and a detected position signal of an actuator of a servo system and which has a plurality of the servo systems arranged in parallel with respect to the load, the servo control apparatus comprising: a forward circuit for producing a signal that changes in response to an external force exerted on the actuator; first feedback circuit for detecting the signal of the forward circuit and feeding the same back to the command signal; and second feedback circuit for feeding the detected position signal of the actuator back to the command signal, producing a deviation signal representative of a deviation between the position signal and the command signal, integrating the deviation signal, and inputting the integrated signal to the forward circuit.
    • 在伺服控制装置中,其中负载由对应于目标值的命令信号与伺服系统的致动器的检测位置信号之间的偏差控制,并且具有相对于所述伺服系统并行布置的多个伺服系统 伺服控制装置包括:正向电路,用于产生响应于施加在致动器上的外力而变化的信号; 第一反馈电路,用于检测正向电路的信号并将其馈送到指令信号; 以及第二反馈电路,用于将检测到的执行器的位置信号反馈到指令信号,产生表示位置信号和指令信号之间的偏差的偏差信号,积分偏差信号,并将积分信号输入到正向电路 。
    • 5. 发明授权
    • Intelligent valve positioner tuning
    • 智能阀门定位器调谐
    • US6155283A
    • 2000-12-05
    • US393151
    • 1999-09-10
    • Peter Daniel HansenBulent Goksel
    • Peter Daniel HansenBulent Goksel
    • F16K37/00G05B13/04G05B19/19
    • G05B19/19F16K37/0083G05B13/042G05B2219/36466G05B2219/36467G05B2219/42002G05B2219/42004G05B2219/42031G05B2219/42033G05B2219/42035G05B2219/42128G05B2219/42149Y10T137/0318Y10T137/8158
    • A valve position controller tuning method avoids impact of friction in valve positioner tuning by building a dynamic model of a valve positioner from a monotonic open-loop response of a valve stem position to a change in valve position controller output. To this end, a model form is selected based on the type of pneumatic actuator and relay that controls valve flow modulating of member motion, and the valve position controller is operated in an open-loop mode. The method includes changing a valve position controller output signal to cause the valve positioner to move a valve flow modulating member, connected to valve positioner, monotonically from one stuck position to another stuck position immediately after a motion in that same direction. When a valve stem position reaches a position threshold, a first valve stem position change and a corresponding time change are measured. The method includes measuring valve stem position changes at times that depend on the first measured time change. Using the measured results, valve positioner response parameters are calculated for the selected model form from which valve position controller tuning constants are calculated.
    • 阀位控制器调节方法通过从阀杆位置的单调开环响应到阀位控制器输出的变化构建阀定位器的动态模型来避免阀定位器调节中的摩擦的影响。 为此,基于控制构件运动的阀流量调节的气动致动器和继电器的类型来选择模型,并且阀位控制器以开环模式操作。 该方法包括改变阀位控制器输出信号,使得阀定位器将与阀定位器相连的阀流量调节元件从一个卡止位置单调移动到紧接在相同方向的运动之后的另一个卡住位置。 当阀杆位置达到位置阈值时,测量第一阀杆位置的变化和对应的时间变化。 该方法包括在取决于第一次测量的时间变化的时候测量阀杆位置变化。 使用测量结果,计算阀门位置控制器调节常数所选择的模型形式的阀门定位器响应参数。
    • 7. 发明授权
    • Flexible servo control method
    • 灵活的伺服控制方式
    • US5581167A
    • 1996-12-03
    • US373225
    • 1995-01-18
    • Tetsuaki KatoSoichi AritaMasaru Nakamura
    • Tetsuaki KatoSoichi AritaMasaru Nakamura
    • G05B7/02G05B13/02G05B19/19G05D3/00G05D3/12
    • G05B19/19G05B2219/34337G05B2219/39089G05B2219/42035
    • A robotic arm is driven by a servomotor which is controlled through position and speed control loops. The position and speed control loops are adaptable in response to a flexible position control. Upon receipt of a flexible control command, a position gain and a proportional gain of the speed control loop are lowered in accordance with a set degree of flexibility. The output of an integrator of the speed control loop is also limited to a set clamp value. As a result, a torque command for controlling the servomotor never achieves an expressly large value even if a position deviation increases. In case an obstacle is placed in the transfer path of the robotic arm, the arm can be moved by human power to avoid the obstacle.
    • PCT No.PCT / JP94 / 00765 Sec。 371日期1995年1月19日 102(e)1995年1月19日PCT PCT 1994年5月12日PCT公布。 WO94 / 27200PC公报 日期1994年11月24日机器臂由伺服电机驱动,伺服电机通过位置和速度控制回路控制。 位置和速度控制回路适应于灵活的位置控制。 在接收到柔性控制命令时,根据设定的灵活程度降低速度控制回路的位置增益和比例增益。 速度控制回路的积分器的输出也限于设定的钳位值。 结果,即使位置偏差增加,用于控制伺服电机的转矩指令也不会实现明显的大值。 如果障碍物放置在机器臂的传送路径中,则可以通过人力来移动臂以避免障碍物。