使用变参数量对柴油机进行控制.pdfVIP

Diesel Engine Control Using Parameter Varying Methods QINGWEN SONG and KAROLOS GRIGORIADIS Department of Mechanical Engineering University of Houston Houston, TX 77204 USA Abstract: Traditionally, engine speed regulation is achieved using classical gain-scheduled PID control to address the variable operating conditions of the engine. However, this approach provides no guarantees for closed-loop system stability or performance. In this work, a model-based linear parameter varying (LPV) approach is applied to address the fast operating condition changes of the engine and to guarantee system stability and optimized torque load rejection in the presence of variable transport delays and fuel saturation constraints. The design method is formulated in terms of linear matrix inequalities (LMIs) that can be solved efficiently using recently developed interior point convex optimization algorithms. The proposed control designs are validated using both nonlinear off-line simulations and real-time hardware-in-the-loop (HIL) implementation for a Cummins diesel engine model. Key-Words : - Engine control, Linear Parameter Varying Control, Optimization 1 Introduction Most prior work on engine speed regulation has been concentrated on idle speed control (ISC). Meth- The operation of modern internal combustion engines ods based on linearization about the idle operating for automotive use must satisfy a diverse set of con- condition have been used extensively in combina- flicting constraints imposed by performance, econom- tion wi