吉林大学学报(工学版) ›› 2013, Vol. 43 ›› Issue (增刊1): 183-188.

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Performance assessment of PID controller of idle speed control system based on the LQG benchmark

SUN Chao-jie1,2, MA Yan1,2, ZHOU Xiu-wen1,2, CHEN Hong1,2   

  1. 1. State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130025, China;
    2. School of Communication and Engineering, Jilin University, Changchun 130025, China
  • Received:2012-06-05 Published:2013-06-01

Abstract:

By adopting linear quadratic gaussian (LQG) benchmark to assess engine idle speed control loop performance,LQG benchmark algorithms in two cases of control loop containing and without containing measurable disturbance were proposed.The benchmark obtained the optimal input and output variances under different weighting factor values by using impulse response matrices to solve optimal LQG control law.The trade-off curve and input and output variances indices can be provided.Performance assessment of the four PID controllers of the engine idle speed systems are analyzed base on the LQG benchmark.

Key words: proportional integral derivative(PID) controller, linear quadratic gaussian (LQG) benchmark, control performance assessment, idle speed control system

CLC Number: 

  • TP14

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