適応観測器を用いた自動車車軸ソフトウェア・トルク計

概要

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Measuring the torque of any rotational mechanical systems is very useful not only for measurements but also for controls. However, the cost of torque meter is the biggest practical problem. Therefore, computerized software torque meter was attempted making automobile wheel axle provided a gasoline engine an object. The theory applied here is not conventional Luenbergertype one but adaptive observer one by Luders-Narendra because of overcoming time-varying characteristic as well as non linear one of the objective system. Experimental results showed that statical precision was less than ±15 Nm, and dynamic response time was about 2 seconds. The latter, dynamic response is not enough as an automobile use. So, as a countermeasure, the concept of software torque meter with table-looking up method which modified by this adaptive observer, was also proposed.
社団法人日本機械学会の論文
1998-08-25