Fan control system fault-tolerance control method considering random time delay
A control system and fault-tolerant control technology, applied in pump control, machine/engine, mechanical equipment, etc., can solve problems such as degradation, system instability, etc., and achieve effective application prospects, reduce conservatism, and good performance characteristics.
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[0157]Embodiment:
[0158]Take a typical fan torque control system as an example:
[0159]
[0160]among them:
[0161]Q = [0 0 0.542]
[0162]Select the actuator failure rate g = 0.5, the maximum control output torque 5N · M, the maximum control input UMax= 10, additional parameter ε1= 1, ε2= 0.2, for ξ0= 0.1, H0= 0.01s, H1= 0.02s, h2= 0.04s. The following table shows that with the integral upper bound2Drop, h∞Performance indicators σ also increase.
[0163]In order to further evaluate the performance of the system, the exterior disturbance exists:
[0164]
[0165]By applying the present invention to a typical fan torque control system, the least h∞Performance indicator σ is 11.7782, allowable controller gain matrixCalculate:
[0166]
[0167]Seefigure 2 Reflecting the probability distribution of Bernuger,image 3 Reflect system control performance. As can be seen from the figure, the fan torque control system can still operate, performance requirements | L (t) | F(t) | Max| Get satisfied. Compared to conventio...
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