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:
Dec. 27, 1994
Filed:
Apr. 09, 1993
John T La Belle, Long Beach, CA (US);
Clayton Industries, El Monte, CA (US);
Abstract
A chassis dynamometer apparatus and method for testing motor vehicles includes at least one roll for engaging the driven wheels of the vehicle. A power supplying and/or absorbing unit such as an electric motor supplies and/or absorbs power from the roll. In addition, a force transducer and speed sensor are coupled to the roll for providing force and speed signals. Signals representative of the desired vehicle inertia, the road load to be simulated, the forces attributable to the parasitic losses and the out-of-loop inertia of the dynamometer and vehicle are also provided. A system controller in response to the above signals controls the power supplying and/or absorbing unit in accordance with: ##EQU1## where: Vd=the desired roll velocity;