1
Marcos Laraia
Jose Marcos Laraia, Masahisa Niwa, Robert P Moehrke, Jose G Taveira: Reactive sensor modules using Pade Approximant based compensation and providing module-sourced excitation. AMI Semiconductor, Matsushita Electric Works, MacPherson Kwok Chen & Heid, Gideon Gimlan, February 28, 2006: US07006938 (30 worldwide citation)

Reactive sensors typically exhibit nonlinear response to temperature variation. Systems and methods are disclosed for compensating for the nonlinear and/or temperature dependent behavior of reactive sensors and for calibrating the post-compensation output signals relative to known samples of the phy ...


2
Marcos Laraia
Jose Marcos Laraia, David John Willis: Providing nonlinear temperature compensation for sensing means by use of padé approximant function emulators. Semiconductor Components, Haynes and Boone, August 2, 2011: US07991571 (5 worldwide citation)

Pade Approximant function emulators are used to model the nonlinear offset and/or nonlinear sensitivity behaviors of a sensor relative to temperature sub-ranges and to produce temperature compensating corrections for both offset and sensitivity as desired. In order to avoid use of brute force divisi ...


3
Marcos Laraia
Jose Marcos Laraia, Masahisa Niwa, Robert P Moehrke, Jose G Taveira: Reactive sensor modules using pade approximant based compensation and providing module-sourced excitation. MacPherson Kwok Chen & Heid, December 22, 2005: US20050283330-A1

Reactive sensors typically exhibit nonlinear response to the combination of an excitational signal (e.g., sinusoidally oscillating signal) and a physical parameter under measure (e.g., position of magnetic core member). Such sensors are typically sensitive to temperature variation. Systems and metho ...


4
Frederick K Bell, Gary E Brazier, Stephen N Brown: Method for calibrating a coordinate measuring machine and the like and system therefor. The Warner & Swasey Company, David R Syrowik, Raymond J Eifler, April 4, 1989: US04819195 (179 worldwide citation)

Method (FIGS. 4A through 4C) and system (FIG. 3) are disclosed for automatically calibrating a coordinate measuring machine (CMM) (10). The system guides an operator through instrument set-up and data collection procedures. The system automatically converts the collected data into error compensation ...


5
Frederick K Bell, Stephen N Brown, Michael T Gale: Method for determining position within the measuring volume of a coordinate measuring machine and the like and system therefor. The Warner & Swasey Company, David R Syrowik, Raymond J Eifler, July 31, 1990: US04945501 (166 worldwide citation)

Axis correction or machine charateristic data is stored (108) in memory (110) within a control or measurement processor (36) of a CMM (10) (FIG. 8). The axis correction data includes error data representing 21 different geometry errors (FIG. 4A through 4C) of the CMM. As position information is requ ...


6
Michael Zelin, David Jamieson: Reusable test unit for simulating electrochemical sensor signals for quality assurance of portable blood analyzer instruments. I Stat Corporation, Pennie & Edmonds, June 23, 1992: US05124661 (135 worldwide citation)

A reusable test unit is disclosed for testing the functionality of a portable blood analyzer, and particularly the interface between the high-impedance electrochemical sensors and the instrument. Signals are generated to simulate amperometric, conductimetric, and potentiometric sensors. Circuitry pe ...


7
Bo Soderberg, Bo Pettersson, Ulf Hocke, Ambjorn Naeve: Method for determining positional errors and for compensating for such errors, and apparatus for carrying out the method. C E Johansson, Nies Kurz Bergert & Tamburro, January 8, 1991: US04982504 (125 worldwide citation)

A method for determining and correcting positional errors or deviations which occur when measuring the position of a point in space, or when positioning to a point which has a specific position in space, where the position refers to a specific coordinate system, such as a rectangular coordinate syst ...


8
Ronald V McBean Sr: Instrumentation system with multiple sensor modules. Cahill Sutton & Thomas, September 13, 1994: US05347476 (117 worldwide citation)

An instrumentation system includes a hand-held computer-based measuring meter having a visual display and a plurality of individual sensor modules that can be selectively coupled to the measuring meter for measuring one of a variety of parameters such as temperature, pressure, or the like. Each sens ...


9
Eric W Strid, Keith E Jones: System for setting reference reactance for vector corrected measurements. Cascade Microtech, Chernoff Vilhauer McClung & Stenzel, August 15, 1989: US04858160 (98 worldwide citation)

A system for calibrating vector corrected electrical measurements to adjust for distortion due to reactance in the measuring circuit, particularly that caused by variable positioning of a circuit element, such as probe or coupling. Initial error factors for directivity, source match, and frequency r ...


10
John R Malloy deceased, Arthur M Olsen: Method of digital process variable transmitter calibration and a process variable transmitter system utilizing the same. Honeywell, Mitchell J Halista, Albin Medved, March 29, 1988: US04734873 (92 worldwide citation)

A method of digital process variable transmitter calibration includes the steps of sensing the process variable (PV) to produce an analog output which is converted to a digital signal representation. The digital signal is corrected by a microprocessor using a characterization equation previously ind ...