公开(公告)号：EP0615606B1

公开(公告)日：1996-04-03

申请号：EP92912748.8

申请日：1992-05-29

申请人： IMPACT SYSTEMS, INC.

发明人： TYPPO, Pekka, M.

IPC分类号： G01B7/06

CPC分类号： G01B7/14 ,  G01B7/107 ,  G01B2210/62

摘要： A caliper gauge for relatively thin moving sheet material (10) is provided by the use of a pair of outer ring air bearings (21a, 21b) flexibly supported which tend to flatten the sheet. An inner central portion of each ring respectively carries active and passive magnetic circuit means (26-28) with the passive means (29) being supported by an elongated strap of Kevlar R (31) which is elongated in the machine direction of the sheet material. This provides for very low unsprung weight.

公开(公告)号：EP0390459A3

公开(公告)日：1992-01-22

申请号：EP90303187.0

申请日：1990-03-26

申请人： IMPACT SYSTEMS, INC.

发明人： Grund, Evan J.

IPC分类号： G05D22/02 ,  H02J3/14

CPC分类号： H02J3/14 ,  D21F5/002 ,  F26B3/30 ,  G05D22/02 ,  Y02B70/3225 ,  Y02P70/24 ,  Y02P70/40 ,  Y04S20/222

摘要： A power control system for the heat lamps (11) for typically drying a continuous web of paper in order to provide a linear moisture profile locates the actuating thyristor type switch (12) at each zone where the heater lamps (11) themselves are located. Thus, computer control can be centralised and wiring minimised. The parameters of minimum flicker for unity power factor and high resolution power control are achieved bu utilising the timing signals provided by the zero crossings of the three-phase AC line voltage input (15) and controlling either half cycles or partial half cycles for each zone. Computing time is reduced by providing for scratch pad memory tables (24a, 25b, 24c) which can rapidly be scanned or sequenced through by a zone pointer (26).

公开(公告)号：EP0389265A3

公开(公告)日：1991-04-03

申请号：EP90303046.8

申请日：1990-03-21

申请人： IMPACT SYSTEMS, INC.

发明人： Typpo, Pekka Matti

IPC分类号： G01B7/10

CPC分类号： G01B5/0002 ,  G01B7/107 ,  G01B2210/42 ,  G01B2210/62

摘要： A caliper gauge for relatively thin moving sheet material (10) is provided by the use of an outer ring type air bearing (17a,17b), flexibly supported, which is flexibly connected again to an inner air bearing (23a,23b) carrying the magnetic measuring components. The outer air bearing (17a,17b) (with its juxtaposed mate) tends to flatten the sheet (10) so that minimum movement is required of the independently actuated inner air bearing (23a,23b). Thus, great accuracy is achieved and tearing or marking of the sheet material (10), such as super calendered or coated grades of paper, is avoided.

公开(公告)号：EP0303356A3

公开(公告)日：1989-11-29

申请号：EP88306351.3

申请日：1988-07-12

申请人： IMPACT SYSTEMS, INC.

发明人： Typpo, Pekka M.

IPC分类号： G01N27/22 ,  G01N33/34 ,  G01B7/10

CPC分类号： G01R27/2641 ,  G01B7/087 ,  G01N27/223 ,  G01N33/346

摘要： A combination caliper/moisture sensor in the form of a scanner in the cross-direction of sheet material being manufactured by a papermaking machine includes a pair of capacitive plates on opposite sides of the moving sheet material and in substantial contact with it which are utilized for measuring capacitance between the juxtaposed plates which are spaced in accordance with the caliper of the paper. Then a magnetic circuit which provides a flux path through the paper is utilized for measuring caliper which is the independent variable of the capacitance equation which, when solved, yields the dielectric constant. Since there is a known relationship between percent moisture and the dielectric constant, the percent moisture of the sheet material can be determined.

公开(公告)号：EP0299716A1

公开(公告)日：1989-01-18

申请号：EP88306350.5

申请日：1988-07-12

申请人： IMPACT SYSTEMS, INC.

发明人： Typpo, Pekka M.

IPC分类号： G01B7/10

CPC分类号： G01B7/10 ,  G01B7/107

摘要： A contacting thickness gauge for measuring the caliper of paper includes a U-shaped pole piece (21) on one side of the paper (10) with a return path being provided by a simple ferrite slab (24) on the other side where the magnetic reluctance of the gaps provides a measure of the caliper. The pole piece (21) has one leg (22) of relatively small diameter contacting the paper (10); the other larger leg (23) of the U-shaped pole piece (21) being spaced from the paper (10) by either jewel or air bearings to minimize the contact with the sensitive surface of the moving sheet material. The area ratio provides for an insensitivity of the gap of the large leg. In addition, the stray self inductance of the windings is eliminated due to the use only of a mutual inductance measurement to determine the final resonant frequency which is a measurement of the caliper.

摘要翻译： 用于测量纸张厚度的接触厚度计包括在纸（10）的一侧上的U形极片（21），其中返回路径由另一侧的简单铁素体板（24）提供，其中磁性 差距的不情愿提供了卡尺的量度。 极片（21）具有与纸（10）接触的相对较小直径的一条腿（22）; U形极片（21）的另一个较大的腿（23）通过宝石或空气轴承与纸（10）间隔开，以最小化与移动片材的敏感表面的接触。 面积比率提供了大腿差距的不敏感性。 此外，由于仅使用互感测量来确定作为卡尺的测量的最终谐振频率，因此消除了绕组的杂散自感。

公开(公告)号：EP0276106A2

公开(公告)日：1988-07-27

申请号：EP88300359.2

申请日：1988-01-18

申请人： IMPACT SYSTEMS, INC.

发明人： Typpo, Pekka M.

IPC分类号： G01N27/22

CPC分类号： G01N27/226 ,  G01N27/223 ,  G01N33/346 ,  G01R27/2605

摘要： A moisture measurement and control system controlling the amount of moisture in paper being manufactured by papermaking machinery, for example, linerboard, utilizes a standard scanning moisture sensor to calibrate a nonscanning moisture sensor to thus provide very fast and accurate moisture measurements for each zone of the moving paper. The measurement is communicated to a fast response time moisture profiler, for example, of the quartz heater type. In addition, the nonscanning moisture measurement unit, which utilizes capacitive electrodes, has improved accuracy due to its electrode arrangement and signal processing technique.

摘要翻译： 通过造纸机械（例如纸板）制造的纸张中的湿度测量和控制系统利用标准的扫描水分传感器来校准非蒸气湿度传感器，从而为每个区域提供非常快速和精确的水分测量 移动纸 该测量被传送到例如石英加热器类型的快速响应时间水分分析仪。 另外，利用电容电极的非蒸气水分测量单元由于其电极布置和信号处理技术而具有提高的精度。

公开(公告)号：EP0276106B1

公开(公告)日：1992-05-13

申请号：EP88300359.2

申请日：1988-01-18

申请人： IMPACT SYSTEMS, INC.

发明人： Typpo, Pekka M.

IPC分类号： G01N27/22

CPC分类号： G01N27/226 ,  G01N27/223 ,  G01N33/346 ,  G01R27/2605

公开(公告)号：EP0303356B1

公开(公告)日：1992-04-15

申请号：EP88306351.3

申请日：1988-07-12

申请人： IMPACT SYSTEMS, INC.

发明人： Typpo, Pekka M.

IPC分类号： G01N27/22 ,  G01N33/34 ,  G01B7/10

CPC分类号： G01R27/2641 ,  G01B7/087 ,  G01N27/223 ,  G01N33/346

公开(公告)号：EP0390459A2

公开(公告)日：1990-10-03

申请号：EP90303187.0

申请日：1990-03-26

申请人： IMPACT SYSTEMS, INC.

发明人： Grund, Evan J.

IPC分类号： G05D22/02 ,  H02J3/14

CPC分类号： H02J3/14 ,  D21F5/002 ,  F26B3/30 ,  G05D22/02 ,  Y02B70/3225 ,  Y02P70/24 ,  Y02P70/40 ,  Y04S20/222

摘要： A power control system for the heat lamps (11) for typically drying a continuous web of paper in order to provide a linear moisture profile locates the actuating thyristor type switch (12) at each zone where the heater lamps (11) themselves are located. Thus, computer control can be centralised and wiring minimised. The parameters of minimum flicker for unity power factor and high resolution power control are achieved bu utilising the timing signals provided by the zero crossings of the three-phase AC line voltage input (15) and controlling either half cycles or partial half cycles for each zone. Computing time is reduced by providing for scratch pad memory tables (24a, 25b, 24c) which can rapidly be scanned or sequenced through by a zone pointer (26).

摘要翻译： 用于通常干燥连续纸幅以提供线性湿度分布的加热灯（11）的功率控制系统将致动晶闸管型开关（12）定位在加热器灯（11）自身所在的每个区域处。 因此，计算机控制可以集中和布线最小化。 利用由三相AC线路电压输入（15）的过零点提供的定时信号来实现单位功率因数和高分辨率功率控制的最小闪烁参数，并且为每个区域控制半周期或半周期 。 通过提供可以通过区域指针（26）快速扫描或排序的便笺簿存储器表（24a，25b，24c）来减少计算时间。

公开(公告)号：EP0971215A1

公开(公告)日：2000-01-12

申请号：EP99109529.0

申请日：1999-05-12

申请人： IMPACT SYSTEMS, INC.

发明人： Typpo, Pekka

IPC分类号： G01G17/02 ,  G01D5/48 ,  D21G9/00

CPC分类号： G01G17/02 ,  G01D5/50 ,  G01G9/005

摘要： Measuring basis weight of a moving web in the cross direction scanner of a paper-making machine, an encapsulated nuclear source (33) of Promethium 147 is used because of its wide area of emission. To conserve space it is mounted on a vertical axis and moves in a horizontal plane parallel to the moving web from a stowed position where the source is shielded to an active position where the source emits through an aperture, through the moving web, and to a detector. The x-y array planar type detector uses four detector segments (1,2,3,4) symmetrically arranged around a center and compensates for belt direction misalignment, the belt driving the cross direction scanners, by mathematically manipulating the electrical signals from each detector to eliminate the error term. Also a standardization flag (36) is used.

摘要翻译： 测量造纸机的横向扫描仪中的移动幅材的基重，由于其面积广泛，所以使用了Promiumium 147的封装核源（33）。 为了节省空间，它被安装在垂直轴线上并且在水平面中平行于移动腹板移动，从收集位置，其中源被屏蔽到活动位置，在该位置，源通过移动腹板射出，并且到达活动位置 探测器。 xy阵列平面型检测器使用四个围绕中心对称布置的检测器段（1,2,3,4），通过数学操作来自每个检测器的电信号来消除皮带方向不对中，带驱动横向扫描仪 错误项。 同样使用标准化标志（36）。