Engine bench system control system

Details Engine bench system control system Engine bench system control system

2011-08-30

2011-08-30

Kirkland, III, Freddie (Department: 2855)

Measuring and testing

Test stand

For engine

Reexamination Certificate

active

08006548

ABSTRACT:
It is a challenge to make it possible to produce a resonance suppression effect, and perform a stable control even in a case where a spring rigidity of a shaft significantly varies. The challenge is achieved as follows. In an engine bench system in which an engine1to be tested and a dynamometer2are coupled together by a coupling shaft3, and a shaft torque control of the dynamometer is performed, a controller5includes: an integral element having an integral coefficient KIfor a deviation (T12r−T12) between a shaft torque command T12r and a measured shaft torque T12; a differential element having a differential coefficient KDfor the measured shaft torque T12; and a proportional element KPfor the measured shaft torque T12. The controller5obtains a torque control signal T2 by subtracting the differential element and the proportional element from the integral element. Control parameters (KI, KP, KD, f1) are determined according to control characteristic parameters (a4, a3, a2, a1) set in a function calculation section6, inertia moments J1, J2 of the engine and the dynamometer, and spring rigidity K12 of the coupling shaft.

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