Two self-tuning adaptive algorithms are developed for a heavy-duty diesel engine in order to tune the idle governor to the specific parameters of a given engine. Engine parameters typically vary across engines and over time, thus causing potentially detrimental effects on engine idle speed performance. Self-tuning controllers determine the specific parameters of a given engine, and then adjust the controller algorithm accordingly. Recursive least squares is used to do the parameter identification, whose samples are synchronized with the discrete injection events of the diesel engine for good convergence. Both Minimum Variance and Pole Placement Self-Tuning Regulators are developed and simulated on the nonlinear diesel engine model. The results show successful tuning of each adaptive controller to the specific parameters of a given engine model, with parameter convergence occurring within 30 seconds.

Issue Section:
Technical Briefs
Keywords:
internal combustion engines, adaptive control, angular velocity control, self-adjusting systems, least squares approximations, synchronisation, convergence, pole assignment, nonlinear control systems
Topics:
Adaptive control, Control equipment, Diesel engines, Engines, Pole placement, Algorithms, Governors, Fuels
1.
Astrom, K. J., and Wittenmark, B., 1995, Adaptive Control, Second Edition, Addison Wesley, Reading, MA.
2.
Roffel, B., Vermear, P. J., and Chin, P. A., 1989, Simulation and Implementation of Self-Tuning Controllers, Prentice-Hall, Englewood Cliffs, NJ.
3.
Augustine, D. W., and Kumar, K. S. P., 1991, “A Method for Self-Tuning a PID Controller for Control of Small to Medium Sized Diesel Engines,” Proc. of the IEEE Int. Conf. on Systems Engineering, Dayton, OH, pp. 85–88.
4.
Zanker, P. M., and Wellstead, P. E., 1978, “On Self-Tuning Diesel Engine Governors,” Control Systems Centre Report No. 422, Univ. of Manchester Institute of Science and Technology.
5.
Astrom
,
K. J.
, and
Wittenmark
,
B.
,
1980
, “
Self-Tuning Controllers Based on Pole-Zero Placement
,”
IEE Proceedings-D
,
127
(
3
), pp.
120
–
130
.
6.
Wellstead
,
P. E.
,
Prager
,
D.
, and
Zanker
,
P.
,
1979
, “
A Pole Assignment Self-Tuning Regulator
,”
Proc. Inst. Electr. Eng.
,
126
(
8
), pp.
781
–
787
.
7.
Hong, G., and Collings, N., 1990, “Application of Self-Tuning Control,” Electronic Diesel Engine Controls: New Developments, SAE Special Publication SP-819, Society of Automotive Engineers, pp. 93–106.
8.
Clarke
,
D. W.
,
Mohtadi
,
C.
, and
Tuffs
,
P. S.
,
1987
, “
Generalized Predictive Control-Part I. The Basic Algorithm
,”
Automatica
,
23
(
2
), pp.
137
–
148
.
9.
Gissinger, G. L., Frank, P. M., and Wunnennberg, J., 1990, “Model-Based Electronic Diesel Engine and Turbocharger Control,” Electronic Diesel Engine Controls: New Developments, SAE Special Publication SP-819, Society of Automotive Engineers, pp. 115–124.
10.
Ogata, K., 1995, Discrete-Time Control Systems, Second Edition, Prentice-Hall, Englewood Cliffs, NJ, pp. 691–696.
11.
Clarke
,
D. W.
, and
Gawthrop
,
P. J.
,
1975
, “
Self-Tuning Controller
,”
Proc. Inst. Electr. Eng.
,
122
, pp.
929
–
934
.
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 by ASME
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