On the basis of the gain-scheduled H∞ design strategy, a novel active fault-tolerant control scheme is proposed. Under the assumption that the effects of faults on the state-space matrices of systems can be of affine...On the basis of the gain-scheduled H∞ design strategy, a novel active fault-tolerant control scheme is proposed. Under the assumption that the effects of faults on the state-space matrices of systems can be of affine parameter dependence, a reconfigurable robust H∞ linear parameter varying controller is developed. The designed controller is a function of the fault effect factors that can be derived online by using a well-trained neural network. To demonstrate the effectiveness of the proposed method, a double inverted pendulum system, with a fault in the motor tachometer loop, is considered.展开更多
This paper considers the robust per formance design problem of the linear systems with both unmodelled dynamics and real parametric uncertainties. We suggest for the first time that the problem can besolved by the H∞...This paper considers the robust per formance design problem of the linear systems with both unmodelled dynamics and real parametric uncertainties. We suggest for the first time that the problem can besolved by the H∞ mixed sensitivity method. The main idea is as follows: Firstly, the original problem istransformed into the robust per formance design problem for a pure parameter uncertain system. Then, theresulting problem is reduced to a standard H∞ control problem which can be solved by the H∞ state feedbacksynthesis method or Doyle’s "DGKF" algorithm.展开更多
This paper focuses on the observer-based controller design problem and proposes a novel H∞/LTRsysthesis method in which the H∞ design technique is combined with the Loop Transfer Recovery (LTR) design methodology. T...This paper focuses on the observer-based controller design problem and proposes a novel H∞/LTRsysthesis method in which the H∞ design technique is combined with the Loop Transfer Recovery (LTR) design methodology. The method involves two designing steps. First, an H∞ full state feedback controller is designed to satisfy the robust stability and performance specifications, which can be done independently of the recovery optimization. Subsequently, the properties of the H∞ state feedback can be reobtained by designing fullor reduced order observers. A case study is presented to illustrate the proposed method.展开更多
文摘On the basis of the gain-scheduled H∞ design strategy, a novel active fault-tolerant control scheme is proposed. Under the assumption that the effects of faults on the state-space matrices of systems can be of affine parameter dependence, a reconfigurable robust H∞ linear parameter varying controller is developed. The designed controller is a function of the fault effect factors that can be derived online by using a well-trained neural network. To demonstrate the effectiveness of the proposed method, a double inverted pendulum system, with a fault in the motor tachometer loop, is considered.
文摘This paper considers the robust per formance design problem of the linear systems with both unmodelled dynamics and real parametric uncertainties. We suggest for the first time that the problem can besolved by the H∞ mixed sensitivity method. The main idea is as follows: Firstly, the original problem istransformed into the robust per formance design problem for a pure parameter uncertain system. Then, theresulting problem is reduced to a standard H∞ control problem which can be solved by the H∞ state feedbacksynthesis method or Doyle’s "DGKF" algorithm.
文摘This paper focuses on the observer-based controller design problem and proposes a novel H∞/LTRsysthesis method in which the H∞ design technique is combined with the Loop Transfer Recovery (LTR) design methodology. The method involves two designing steps. First, an H∞ full state feedback controller is designed to satisfy the robust stability and performance specifications, which can be done independently of the recovery optimization. Subsequently, the properties of the H∞ state feedback can be reobtained by designing fullor reduced order observers. A case study is presented to illustrate the proposed method.
