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公开(公告)号：US5260880A
公开(公告)日：1993-11-09
申请号：US736681
申请日：1991-07-26
申请人： Ronald S. Tump
发明人： Ronald S. Tump
CPC分类号： G01G11/086 , G05D7/0611
摘要： A loss-in-weight feeder for discharging a flowable material from a reservoir through a controllable discharge member, including a closed loop controller configured to compare the actual rate at which material is discharged from the reservoir to a desired discharge rate. During operation, a racheting process is used to avoid the use of spurious weight signals to determine the material weight in the feeder for purposes of properly controlling the discharge rate.
摘要翻译： 一种重量减轻的进料器，用于通过可控排放构件从储存器排出可流动材料，包括闭环控制器，其被配置为将材料从储存器排出的实际速率与期望的排放速率进行比较。 在操作过程中，为了适当地控制排放速率，使用冲洗过程来避免使用假重量信号来确定供料器中的材料重量。
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92.发明授权Method and apparatus for improving the accuracy of closed loop controlled systems 失效用于提高闭环控制系统精度的方法和装置
公开(公告)号：US5132897A
公开(公告)日：1992-07-21
申请号：US594822
申请日：1990-10-09
申请人： Bernd Allenberg
发明人： Bernd Allenberg
CPC分类号： G01G13/248 , G01G11/086
摘要： The precision of a closed loop control system, for example of a loss-in-weight feeder, having a controlled operating section and a closed loop controlling section, is improved by adjusting the closed loop controlling section with regard to at least two stochastic precision disturbing signals. One such signal may represent disturbances that affect a sensor for ascertaining the actual weight of the scale. The other value may represent estimated bulk material density variations or disturbances. A model generator (7) provides spectra representing these disturbing values. A noise parameter estimator (17) selects those spectra most closely resembling the spectra of the disturbing values for producing an adjusting signal that is used to adapt the closed loop controlling section (5) to an optimal control. The closed loop controlling section (5) has connected thereto an evaluating circuit (14) including the model generator (7) for performing the correction or adjustment.
摘要翻译： 通过相对于至少两个随机精度扰动调整闭环控制部分，改进了具有受控操作部分和闭环控制部分的闭环控制系统（例如具有减重馈送器）的精度 信号。 一个这样的信号可以表示影响传感器以确定秤的实际重量的干扰。 另一个值可以表示估计的体积材料密度变化或干扰。 模型发生器（7）提供表示这些干扰值的光谱。 噪声参数估计器（17）选择最接近类似于干扰值的频谱的那些频谱，用于产生用于使闭环控制部分（5）适应于最佳控制的调整信号。 闭环控制部分（5）连接有包括用于执行校正或调整的模型发生器（7）的评估电路（14）。
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公开(公告)号：US5074435A
公开(公告)日：1991-12-24
申请号：US532067
申请日：1990-06-01
申请人： Don Suverkrop , John A. Cloes
发明人： Don Suverkrop , John A. Cloes
摘要： A system for controlling the feed rate from a vibrating feeder including a device for sensing the amount of materials being discharged from the feeder, an apparatus to change the slope angle of the feeder, and a controller operatively connected to the sensing device and the slope changing apparatus to actuate the apparatus in response to changes in the weight or volume of materials being discharged from the feeder. The sensing device can be connected to a take-away conveyor unit that receives the materials being discharged from the feeder. The slope changing apparatus raises or lowers one end of the feeder to change the slope angle of the feeder while it operates.
摘要翻译： 一种用于控制来自振动给料器的进给速率的系统，包括用于感测从进料器排出的材料的量的装置，改变进料器的倾斜角的装置以及可操作地连接到感测装置的控制器和斜率改变 响应于从进料器排出的材料的重量或体积的变化来致动装置的装置。 感测装置可以连接到接收从进料器排出的材料的收集输送单元。 斜坡改变装置升高或降低供料器的一端，以在进给器工作时改变进给器的倾斜角度。
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公开(公告)号：US4880142A
公开(公告)日：1989-11-14
申请号：US188343
申请日：1988-05-04
申请人： Noboru Higuchi , Keizo Matsui , Chuzo Kobayashi , Hiroshi Ohnishi
发明人： Noboru Higuchi , Keizo Matsui , Chuzo Kobayashi , Hiroshi Ohnishi
CPC分类号： G01G13/026 , G01G11/086 , G01G13/248 , G01G19/22 , Y10S706/90
摘要： A powder measuring device and powder measuring mixer in which powder is supplied from a supply hopper to a measuring hopper with its flow rate controlled by a flow regulator associated with the hopper. The weight of the measuring hopper is monitored. A controller compares the measured weight with a target rate to produce a deviation therebetween and a time variation of the deviation. The controller operates according to fuzzy inference to produce a desired flow rate for the next control cycle. This desired flow rate is then supplied to the flow regulator. Several supply hoppers with associated flow regulators can be used. Then the output of the controller is switched between the different flow regulators at different phases of the mixing measurement. Additionally, the measuring hopper can be movable between the different supply hoppers so as to avoid complicated piping.
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公开(公告)号：US4742879A
公开(公告)日：1988-05-10
申请号：US911919
申请日：1986-09-26
申请人： Ferdinand Leifeld
发明人： Ferdinand Leifeld
摘要： An apparatus for measuring a travelling fiber lap prior to introduction thereof into a fiber processing textile machine. There is provided a thickness measuring device contacting the fiber lap for mechanically detecting thickness fluctuations thereof. A first transducer is connected to the thickness measuring device for converting mechanical signals into electric signals representing the thickness fluctuations, and a computer is connected to the first transducer for receiving the electric signals from the first transducer and a display device connected to an output of the computer. There are further provided a weighing device for continuously determining the weight of the travelling fiber lap; a second transducer connected to the weighing device and to the computer for applying thereto signals representing the momentary weight of the fiber lap passing through the weighing device; a first fiber lap advancing arrangement situated upstream of the weighing device for advancing the fiber lap to the weighing device; and a second fiber lap advancing arrangement situated downstream of the weighing device for withdrawing the fiber lap from the weighing device.
摘要翻译： 一种在引入纤维加工纺织机之前测量行进的纤维卷材的装置。 提供了与纤维搭接部接触的厚度测量装置，用于机械地检测其厚度波动。 第一传感器连接到厚度测量装置，用于将机械信号转换成表示厚度波动的电信号，并且计算机连接到第一换能器，用于接收来自第一换能器的电信号和连接到第一换能器的输出的显示装置 电脑。 还提供一种用于连续地确定行进的纤维卷的重量的称重装置; 连接到称重装置和计算机的第二传感器，用于向其施加表示通过称重装置的纤维卷的瞬间重量的信号; 位于所述称重装置上游的第一纤维棉卷行进装置，用于将所述纤维卷料推进到所述称重装置; 以及位于称重装置下游的第二纤维棉卷行进装置，用于从称重装置中取出纤维卷。
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公开(公告)号：US4722456A
公开(公告)日：1988-02-02
申请号：US889471
申请日：1986-07-25
CPC分类号： G01G23/46 , G01G11/086 , G01G13/248 , G01G23/00
摘要： The present invention is a loss-in-weight feeding system including an accelerometer for detecting extraneous disturbances impinging on the system and preventing the disturbance from adversely affecting the feed rate. A split-beam weighing assembly senses the weight of the material in the container and produces a first signal to control the feed rate. The accelerometer is mounted on the split beam assembly and produces an acceleration signal. The acceleration signal is compared with a predetermined limit, and if the comparison shows a difference beyond a predetermined size, the action of the first signal is inhibited.
摘要翻译： 本发明是一种丢失重量供给系统，包括用于检测撞击在系统上的外来干扰的加速度计，并防止干扰对进给速率的不利影响。 分束称重组件感测容器中材料的重量并产生第一信号以控制进料速率。 加速度计安装在分束组件上并产生加速度信号。 将加速度信号与预定极限进行比较，如果比较显示超过预定尺寸的差值，则禁止第一信号的动作。
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97.发明授权Apparatus and method for improving the accuracy of a loss-in-weight feeding system 失效用于提高重量损失输送系统精度的装置和方法
公开(公告)号：US4635819A
公开(公告)日：1987-01-13
申请号：US713749
申请日：1985-03-19
申请人： David H. Wilson , James M. Loe
发明人： David H. Wilson , James M. Loe
摘要： A control for loss-in-weight feeders which decreases flow error during refill of the feeder hopper. The weight range (empty to full capacity) of the hopper is divided into weight increments. Samples are taken of the hopper weight during discharge and refill, and each sample is assigned to a weight increment. During discharge, a scale factor related to the density of material in the hopper is computed, assigned to a weight increment and stored in memory; and the hopper feed screw is driven at a speed proportional to the computed scale factor. During refill, the stored scale factors are retrieved from memory and the hopper feed screw is driven at a speed proportional to the stored scale factors; but no additional scale factors are calculated.
摘要翻译： 减重进料器的控制，减少进料斗重新填充时的流量误差。 料斗的重量范围（空到满容量）分为重量增量。 在排出和再填充期间取样料斗的重量，并将每个样品分配给加重量。 在放电期间，计算与料斗中材料密度相关的比例因子，分配给加权增量并存储在存储器中; 并且料斗进给螺杆以与所计算的比例因子成正比的速度被驱动。 在补充期间，存储的比例因子从存储器中取出，料斗进料螺杆以与存储的比例因子成比例的速度被驱动; 但不计算额外的比例因子。
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公开(公告)号：US4597459A
公开(公告)日：1986-07-01
申请号：US675754
申请日：1984-11-28
CPC分类号： G01G11/083 , Y10S177/05
摘要： A weight detecting type sensor comprising a roller capable of partly jutting out upwardly from the surface of a body conveying belt, a strut rotatably supporting the roller and having a through-aperture at a portion thereof, a sensor having an optical axis associated with the through-aperture formed in the strut, and a pair of magnets disposed below the bottom of the strut.
摘要翻译： 一种重量检测型传感器，包括能够从主体输送带的表面向上突出部分地突出的滚子，可转动地支撑滚子的支柱，并在其一部分具有通孔，传感器具有与通孔相关联的光轴 - 支柱中形成的孔，以及设置在支柱底部下方的一对磁体。
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公开(公告)号：US4571498A
公开(公告)日：1986-02-18
申请号：US664316
申请日：1984-10-24
申请人： James C. Hagan , Owen C. Hagan
发明人： James C. Hagan , Owen C. Hagan
摘要： An article sensor which defines an opening through which articles to be measured are propelled in a non-supported condition. Bounding the opening are at least two mutually perpendicular arrays of light sources and of photodetectors. The photodetectors constitute the inputs to a microprocessor controlled circuit so that the number and identity of photodetectors that are obscured by a passing article can be determined rapidly thereby enabling plural measurements of articles dimensions to be made during traversal of a single article. The microprocessor can be programmed to compute the volume of an article, the weight of an article or virtually any other characteristic of an article. A circuit for controlling and interrogating the photodetectors which permits interrogation of the photodetectors at a rate corresponding to that at which the microprocessor operates. The circuit in a first phase of operation senses the voltage drop across the phototransistor without significantly discharging current carriers from the base of the transistor and in a second phase totally discharges the base in preparation for a succeeding measurement so that determination of the condition of the photodetectors is achieved rapidly and accurately.
摘要翻译： 一种制品传感器，其限定了待测量物品在未支撑状态下被推进的开口。 围绕开口是至少两个相互垂直的光源阵列和光电检测器。 光电探测器构成对微处理器控制电路的输入，使得能够快速确定被通过的物品遮蔽的光电探测器的数量和身份，从而可以在穿过单个物品期间进行物品尺寸的多次测量。 微处理器可被编程为计算物品的体积，物品的重量或物品的几乎任何其它特征。 用于控制和询问光电检测器的电路，其允许以与微处理器操作的速率相对应的速率询问光电检测器。 第一阶段的电路检测光电晶体管两端的电压降，而不会从晶体管的基极显着地放电电流载流子，而在第二阶段中，对基极进行完全放电，为后续测量作准备，从而确定光电探测器的状态 快速准确地实现。
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公开(公告)号：US4531630A
公开(公告)日：1985-07-30
申请号：US508834
申请日：1983-06-29
申请人： Robert F. Oury , Charles J. Arndt
发明人： Robert F. Oury , Charles J. Arndt
摘要： A load sensor for a concrete conveyor having a tremie which sounds a signal and releases the tremie in case the tremie becomes overloaded. The device has a U-shaped deflection yoke between the tremie and the conveyor which deflects under the weight of the tremie to close switches and actuate the appropriate safety device. All parts are protected from concrete to insure proper functioning.
摘要翻译： 一种用于混凝土输送机的负载传感器，其具有听起来信号的颤音并且在颤抖变得过载的情况下释放颤抖。 该装置在颤音和输送机之间具有U形偏转轭，其在颤抖的重量下偏转以闭合开关并致动适当的安全装置。 所有部件都不受混凝土保护，以确保正常工作。
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