Predictors for application to real-time adaptive control of a diesel prime-mover

Adaptive control of a power prime-mover requires effective modeling and identification techniques that have good disturbance rejection properties. Existing methods tend to avoid explicit modeling of input dead-time due to resulting computational complexity. Two different approaches of modeling the diesel power prime-mover are presented. The predictors are derived from the results of two different least-squares estimates of the plant. The derived predictors are compared with each other, and with their respective least-squares models, on the basis of disturbance rejection capability and computational complexity. It is shown by extensive simulation studies that the predictors obtained converge quickly and operate with very small prediction error under severe load disturbances and large speed reference changes. A comparative discussion of the two methods is presented.<<ETX>>

[1]  H. G. Hopkins,et al.  An Identification Approach to Throttle-Torque Modeling , 1981 .

[2]  H. O. Hardenberg,et al.  An Empirical Formula for Computing the Pressure Rise Delay of a Fuel from Its Cetane Number and from the Relevant Parameters of Direct-Injection Diesel Engines , 1979 .

[3]  P. E. Wellstead,et al.  Application of self-tuning to engine control , 1985 .

[4]  R N Brady DIESEL FUEL SYSTEMS , 1981 .

[5]  Naim A. Kheir,et al.  On-line identification methods , 1980 .

[6]  T. Fong-Chwee,et al.  Self-tuning PID controllers for dead time processes , 1988 .

[7]  N. Henein,et al.  Ignition Delay Correlations for Neat Ethanol and Ethanol-DF2 Blends in a D.I. Diesel Engine , 1984 .

[8]  R. L. Morris,et al.  Parameter Estimation of Spark-Ignited Internal Combustion Engines , 1982 .

[9]  T. R. Fortescue,et al.  Implementation of self-tuning regulators with variable forgetting factors , 1981, Autom..

[10]  H. Kurz,et al.  Digital parameter-adaptive control of processes with unknown dead time , 1981, Autom..

[11]  Krzysztof J. Latawiec,et al.  On low frequency and long-run effects in self-tuning control , 1983, Autom..

[12]  B. Anderson,et al.  Digital control of dynamic systems , 1981, IEEE Transactions on Acoustics, Speech, and Signal Processing.

[13]  Marimuthu Palaniswami,et al.  An adaptive control algorithm for linear systems having unknown time delay , 1988, Autom..

[14]  Lennart Ljung,et al.  Analysis of some On-Line Identification Methods , 1976 .