The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 02, 2001
Filed:
Jun. 16, 2000
Joseph Tyckowski, Clawson, MI (US);
Meritor Light Vehicle Technology, LLC, Troy, MI (US);
Abstract
A window obstruction identification system is tailored to better identify obstructions at start-up. The limit at start-up is set based upon the first peak value in a direction away from the direction expected for an obstruction. In the case of monitoring speed, the limit is set based upon the first upper peak. The limit is set to be a scaler far less than 1 times this peak. In this way, the limit does not vary with the upcoming expected valleys. In the prior art, an obstruction at start-up was sometimes identified as an expected valley, and thus not quickly identified. In a second embodiment, current is monitored. In a current monitored system, it is the first valley which is utilized to set the limit. In such a case, the valley is multiplied by a scaler which is greater than 1. The disclosed system also accounts for system hysteresis by setting the scaler value to two different values based upon prior movement if the system is subject to significant hysteresis.