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:
Aug. 24, 1999
Filed:
May. 27, 1997
Hitachi, Ltd., , JP;
Abstract
A vehicle testing system for simulating a vehicular motion and vehicular vibration caused thereby is provided to test a front or rear wheel section of a four-wheel vehicle. The testing system comprises a vehicle suspension system, a wheel attached thereto, a first actuator for exciting the wheel based on data concerning road and other conditions, and a dummy vehicle body linked to the suspension system and having a frame, a reaction measuring device linked to the frame and a second actuator for exciting the frame. When the wheel is excited corresponding to the data on road and other conditions, the suspension system and the dummy body vibrate. The reaction force generated by the suspension system is measured by the reaction measuring device. Using the measured value, the digital computer calculates vibrational response after an elapse of a predetermined time of a body numerical model and the like imaginary linked with the dummy body to excite and control the first actuator so that the vibrational response is made by the dummy body and the suspension system after the elapse of the predetermined time. Accordingly, it becomes possible to conduct a test similar to an actual car test by using a partial model composed of parts of an actual vehicle.