This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
A Second Order Idle Speed Controller
Annotation ability available
Sector:
Language:
English
Abstract
The purpose of this paper is to describe an idle speed regulation formula based on a sampled model of a second order type, taken to show the Internal Combustion (IC) engine dynamics from the by-pass idling throttle (RPM vs Duty Cycle). The identification of this reduced model, and the calculation of the desired closed-loop transfer function give the optimal numerical coefficients of the recursive control law. Parametric degrees of freedom are: damping and response time before steady state. Calibration values are calculated in an automatic process by tuning physical parameters. Initial conditions are determined in order to eliminate transient oscillations of the engine speed output.
The noticable advantages are: the power of this numerical control law with regard to variable inertia and charge, the good damping obtained on frequency response, and the integrated adaptive form. All kinds of IC engines may be considered and controlled by this law.
Recommended Content
Technical Paper | Throttle Flow Characterization |
Technical Paper | A Diagnostic Technique for the identification of Misfiring Cylinder(s) |
Technical Paper | Auto-Tuning of PID Controllers for Calibration of Idle Speed Controller Maps in Diesel Engines |
Authors
Citation
Sans, M., "A Second Order Idle Speed Controller," SAE Technical Paper 880184, 1988, https://doi.org/10.4271/880184.Also In
Engine and Driveline Control Systems-New Developments and Trends
Number: SP-0739; Published: 1987-02-01
Number: SP-0739; Published: 1987-02-01
References
- Takahashi T. Ueno T. Yamamoto A. Sambuichi H. A SIMPLE ENGINE HODEL FOR IDLE SPEED CONTROL 850291 SAE paper
- Lecluse Y. REGULATION AUTO-ADAPTATIVE, “Techniques d'applications” MESURES journal 01/19/87 51 56
- Powell B.K. A DYNAMIC MODEL FOB AUTOMOTIVE ENGINE CONTROL ANALYSIS, WA5 1979 IEEE 120 126
- Dobner Donald J. A MATHEMATICAL ENGINE MODEL FOR DEVELOPMENT OF DYNAMIC ENGINE CONTROL 800054 SAE paper
- Morris R.L. Hopkins H.G. Borcherts R.H. AN IDENTIFICATION APPROACH TO THROTTLE-TORQUE MODELING 810448 SAE paper