1994-03-01

Application of a Control System CAD Program to a Study of an Electronic Engine Control System 940658

Automotive electronic control systems have tended to become more complex in recent years as a result of stronger requirements for environmental friendliness and higher levels of driveability. The first step in developing a control system is to study the required logic and system configuration at the initial stage of new vehicle development. The authors have incorporated an engine-vehicle model in a control system CAD program to simulate the logic needed for various control tasks. This paper presents a typical application in which a behavior of some outputs, such as engine torque and acceleration, was analyzed, and the electronic controls needed to assure driveability were identified. The construction and operation of a controller-in-the-loop system are also described.

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