Invention Grant
US07991571B2 Providing nonlinear temperature compensation for sensing means by use of padé approximant function emulators
有权
通过使用padé近似函数仿真器为感测装置提供非线性温度补偿
- Patent Title: Providing nonlinear temperature compensation for sensing means by use of padé approximant function emulators
- Patent Title (中): 通过使用padé近似函数仿真器为感测装置提供非线性温度补偿
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Application No.: US12166661Application Date: 2008-07-02
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Publication No.: US07991571B2Publication Date: 2011-08-02
- Inventor: Jose Marcos Laraia , David John Willis
- Applicant: Jose Marcos Laraia , David John Willis
- Applicant Address: US AZ Phoenix
- Assignee: Semiconductor Components Industries, LLC
- Current Assignee: Semiconductor Components Industries, LLC
- Current Assignee Address: US AZ Phoenix
- Agency: Haynes and Boone, LLP
- Main IPC: G01K15/00
- IPC: G01K15/00 ; G01C25/00 ; G01D18/00

Abstract:
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 division for generating the Pade Approximant function signals, in one set of embodiments, feedback is used to provide a corresponding effect. In order to minimize the number of coefficients that are to be resolved and stored, in one set of embodiments, first or higher order Pade Approximants with normalized denominators are used so that each function can be defined with just three coefficients. Embodiments that are more analog in nature or more digital in nature are disclosed. Methods for resolving the Pade Approximant coefficients and calibrating each sensor unit on a mass production basis are also disclosed.
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