Multivariable nonlinear system adaptive equalization multi-model decomposition and control method
A nonlinear system and self-adaptive equalization technology, applied in self-adaptive control, comprehensive factory control, general control system, etc., can solve problems such as system decomposition or controller design, complex scheduling, and complex system, so as to improve decomposition efficiency and quality, simplify the controller structure, and improve the effect of closed-loop performance
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[0030] Consider the multivariable nonlinear system as an inverted conical tank system, such as figure 1 As shown, two of the input flows are F i and F j , the initial temperature is T i = 350K. The flow rate of the coolant is q c temperature is T ci , output temperature T co Between 289 and 313K. The dynamic equation of the system is as follows:
[0031]
[0032] where R and H are the radius and height of the cone, respectively. Each parameter is R=0.798m, H=1m, κ=50m 5 / 2 min -1 , Fj=10cm 3 min -1 ,T ci =289K,T co = 313K. The control objective of the system is to operate F i and q c So that the liquid level h and temperature T can meet the control requirements. Obviously, it can be seen from formula (1) that the nonlinearity of the system is very strong, and a single linear controller cannot meet the requirements.
[0033] Adopt the self-adaptive balanced multi-model decomposition algorithm of the multivariable system proposed by the present invention, s...
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