Method and apparatus for testing motor vehicles under simulated

Details Method and apparatus for testing motor vehicles under simulated Method and apparatus for testing motor vehicles under simulated

1993-04-09

1994-12-27

Raevis, Robert

Measuring and testing

Vehicle chassis

Steering

G01L 322

Patent

active

053754603

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;

REFERENCES:
patent: 4161116 (1979-07-01), Fegraus et al.
patent: 5101660 (1992-04-01), La Belle
ASE Technical Paper Series, Advantages of Using Microcomputers in Dynamometer Controllers Severiono D'Angelo and R. D. Gafford; Feb. 1981; pp. 1-11.

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