The Research of Air Fuel Ratio Self-Learning Control Strategy Based on UEGO Sensor

2010 ◽  
Vol 37-38 ◽  
pp. 1544-1548
Author(s):  
Lan Tang ◽  
Wu Qiang Meng ◽  
Hai Yun Gan

This paper begins with physical characteristics and the basic working principle of the traditional switch-type Exhaust Gas Oxygen (EGO) sensor and Universal Exhaust Gas Oxygen (UEGO) senor, and then it analyses the Air-Fuel ratio (A/F) Self-learning Control strategy and designs A/F Self-learning Control algorithm of Electronic Control Turbocharged CNG lean-burn engine based on UEGO sensor. At the end, it uses the written control code into ECU of the test engine, and after bench calibration tests it shows that the designed algorithm can compensate wearing, tiring, aging and other state of the engine and improve A/F control accuracy.

2012 ◽  
Vol 233 ◽  
pp. 142-145
Author(s):  
Jin Yu ◽  
Deng Xu ◽  
Guo Qing Huang

Synchronous control accuracy of side-cylinders of the hydroforming press is a very important indicator , it has a great influence on the quality of products. Generally, people take PID control strategy to improve the precision of hydroforming press. In this paper, a mathematical model of the side-cylinders’ hydraulic system is established and the PID and iterative learning control strategy is used, respectively, to find which one is better . The results show that the iterative learning control strategy has a higher synchronous control accuracy.


2013 ◽  
Vol 456 ◽  
pp. 240-243
Author(s):  
Guo Hua Zhao

In allusion to the system that there is but only severe time-varying and non-flexible coupling between the two hydraulic channels, the daul-cylinder hydraulic synchronous movement servo control system is designed for large die casting equipment, and its control model is establish. By guiding thought of self-learning control strategy, two levels of speed control scheme is adopted in the hydraulic system, namely the level adjustment and secondary servo compensation adjustment. On the basis, adaptive learning control scheme is established. Thus, its control strategy algorithm of incremental form is presented. Finally, through MATLAB(R2010a), the simulation analysis has been carried on to the system, the emulational results show that the control scheme can make the system to achieve excellent performances of synchronous movement.


2012 ◽  
Vol 45 (30) ◽  
pp. 296-301 ◽  
Author(s):  
B. Ebrahimi ◽  
R. Tafreshi ◽  
H. Masudi ◽  
M.A. Franchek ◽  
J. Mohammadpour ◽  
...  

1988 ◽  
Vol 21 (16) ◽  
pp. 195-200
Author(s):  
Song Yong-duan ◽  
Gao Wei-Bing ◽  
Cheng Mian

2010 ◽  
Vol 59 (8) ◽  
pp. 3757-3765 ◽  
Author(s):  
Xiaofang Yuan ◽  
Yaonan Wang ◽  
Lianghong Wu ◽  
Xizheng Zhang ◽  
Wei Sun

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