Method for determining and compensating the geometric errors...

Details Method for determining and compensating the geometric errors... Method for determining and compensating the geometric errors...

2006-10-03

2006-10-03

Lefkowitz, Edward (Department: 2855)

Measuring and testing

Vehicle chassis

Steering

C073S117020, C073S116070

Reexamination Certificate

active

07114380

ABSTRACT:
A method is described for determining geometric errors of a rotary encoder with a plurality of increments that can be registered by a sensor, encoder being applied to an internal combustion engine and being mounted on a shaft which can be directly or indirectly set in motion by gas moments and moments of inertia. The invention profile of the angular velocity ωmess(t) of the shaft is measured for a time-variable shaft speed, that the shaft speed signals obtained during the measurement are averaged and that the averaging process is carried out within a shaft speed range in which the effects of the gas moments and moments of inertia, which act on the shaft in the internal combustion engine, on the angular velocity of the crankshaft cancel each other out statistically, at least to a great extent and that geometric errors of the rotary encoder are determined on the basis of the profile of the angular velocity ωmess(t).

REFERENCES:
patent: 5623412 (1997-04-01), Masson et al.
patent: 5703283 (1997-12-01), McClish et al.
patent: 5906652 (1999-05-01), Remboski et al.
patent: 6655205 (2003-12-01), Bartelt et al.
patent: 195 40 674 (1997-05-01), None
patent: 196 22 042 (1997-12-01), None
patent: 100 17 107 (2001-10-01), None

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