公开(公告)号：DE60233669D1

公开(公告)日：2009-10-22

申请号：DE60233669

申请日：2002-10-02

Applicant: ABBOTT LAB

Inventor： WANG BING ,  WALKER DONNY R ,  ROTH BRIAN J

IPC: H02P8/18 ,  H02P8/12 ,  H02P8/22

Abstract: A stepper motor control circuit reduces ripple current by applying both fast and slow current decays to a motor phase when current is being reduced in the motor phase while following a falling current waveform. The control circuit uses an initial fast decay to reduce a winding current and then switches to a slow decay until a winding current is sampled again. The control circuitry samples a winding current and compares the sampled current to a reference current to determine if current is to be applied or reduced using fast and/or slow decay methods. Different phase current sample circuits allow either constant current sensing or selective current sensing.

公开(公告)号：CA2132960A1

公开(公告)日：1993-10-14

申请号：CA2132960

申请日：1993-03-24

Applicant: ABBOTT LAB

Inventor： CLARK FREDERIC L ,  CLIFT GILBERT ,  HENDRICK KENDALL B ,  KANEWSKE WILLIAM J III ,  LOGOCKI PETER A ,  MARTIN RICHARD R ,  MITCHELL JAMES E ,  MOORE LARRY W ,  PENNINGTON CHARLES D ,  WALKER EDNA S ,  SMITH B JANE ,  TAYI APPARAO ,  VAUGHT JAMES A ,  YOST DAVID A ,  MERRIAM RICHARD A ,  WALKER DONNY R ,  RUMBAUGH WILLIAM ,  CLEMENS JOHN M

IPC: B01L3/00 ,  B01L3/08 ,  B01L9/06 ,  B29C45/00 ,  B67D99/00 ,  C12M1/34 ,  G01F23/284 ,  G01N1/00 ,  G01N1/14 ,  G01N1/28 ,  G01N21/03 ,  G01N21/25 ,  G01N33/53 ,  G01N33/537 ,  G01N33/538 ,  G01N33/542 ,  G01N33/543 ,  G01N35/00 ,  G01N35/02 ,  G01N35/04 ,  G01N35/10 ,  G05D23/19 ,  H01J49/04 ,  H05B1/02

Abstract: 2132960 9320440 PCTABS00027 An automated, continuous and random access analytical system, havin apparatus and methodology capable of simultaneously performing multiple assays of liquid samples using different assay methodologies, and providing continuous and random access while performing a plurality of different assays on the same or different samples during the same time period, is disclosed. A method is also disclosed of operating an automated continuous and random access analytical system capable of simultaneously effecting multiple assays of a plurality of liquid samples wherein scheduling of various assays of the plurality of liquid samples is followed by creating a unit dose disposable and separately transferring a first liquid sample (26), reagents (30) to a reaction vessel (34) without initiation of an assay reaction sequence, followed by physical transfer of the unit dose disposable (34) to a process work station (46), whereby a mixture of the unit dose disposable reagents and sample (34) are achieved during incubation. The system is capable of performing more than one scheduled assay in any order, and assays where more than such scheduled assays are presented. The automated, continuous and random access analytical system is also capable of analyzing the incubated reaction mixtures independently and individually by at least two assay procedures.

公开(公告)号：ES2331355T3

公开(公告)日：2009-12-30

申请号：ES02800436

申请日：2002-10-02

Applicant: ABBOTT LAB

Inventor： WANG BING ,  WALKER DONNY R ,  ROTH BRIAN J

IPC: H02P8/18 ,  H02P8/12 ,  H02P8/22

Abstract: Un sistema de control de un motor paso a paso (100) que comprende: un circuito comparador (110, 112) para comparar una corriente de fase del motor con una corriente de referencia (REF A, REF B) y proporcionar una salida; un controlador de corriente de motor (120) acoplado a un circuito comparador (110, 112) y una fase del motor (A, B) para ajustar la corriente de fase del motor en respuesta a la salida, en el que el controlador de corriente del motor (120) usa selectivamente una disminución lenta y una rápida de la corriente en la fase del motor (A, B) para reducir la corriente de la fase del motor, caracterizado porque el controlador de corriente del motor (120) mide un primer periodo de tiempo requerido para disminuir la corriente de fase del motor hasta igualar la corriente de referencia (REF A, REF B), usando una disminución de corriente rápida; aplica el proceso de disminución de corriente rápida durante un segundo periodo de tiempo igual al primer periodo de tiempo medido y reduce adicionalmente la corriente de la primera fase del motor usando un proceso de disminución lenta de la corriente a continuación del segundo periodo de tiempo; y disminuye la corriente de la fase del motor a la corriente de referencia (REF A, REF B) usando la disminución de corriente rápida y conmuta a la disminución de corriente lenta a continuación de un periodo de tiempo definido que es igual al doble del tiempo transcurrido requerido para reducir la corriente de la fase del motor a la corriente de referencia (REF A, REF B).

公开(公告)号：CA2461820A1

公开(公告)日：2003-04-10

申请号：CA2461820

申请日：2002-10-02

Applicant: ABBOTT LAB

Inventor： WANG BING ,  WALKER DONNY R ,  ROTH BRIAN J

IPC: H02P8/12 ,  H02P8/18 ,  H02P8/22

Abstract: A stepper motor control circuit reduces ripple current by applying both fast and slow current decays to a motor phase when current is being reduced in th e motor phase while following a falling current waveform. The control circuit uses an initial fast decay to reduce a winding current and then switches to a slow decay until a winding current is sampled again. The control circuitry samples a winding current and compares the sampled current to a reference current to determine if current is to be applied or reduced using fast and/or slow decay methods. Different phase current sample circuits allow either constant current sensing or selective current sensing.