Zhi Yong Zhang

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The boiler thermal control system is well known with the characteristic of slow time-varying, large lag and large inertia. Adopting generalized Jordan block and algebra equivalence transform method, all of the transfer functions at different load points is transformed to state-space description with time variable. According to engineering practice of(More)
This paper focuses on the digital control technique and its industrialization of high-power three-phase three-level rectifier system. Firstly, the mathematical model of three-phase three-level VIENNA rectifier is established. The multiloop control method is realized based on the DQ coordinates, and a simplified three-level space vector pulse width(More)
Optimal beamforming on synthetic noise and interference is a flexible and intuitive technique for shaping beam patterns. In this method, suppression of arrivals from undesirable directions is achieved through introduction of synthetic interferences and optimal beamforming using the resulting noise-interference covariance matrix. We apply this approach to a(More)
Subband adaptive filter algorithms are able to improve the convergence behavior by performing the prewhitening procedure on the input signals. In this paper, we propose a new variable step size improved multiband-structured subband adaptive filter algorithm which dynamically selects subband filters (VSS-IMASF) in order to improve the steady-state(More)
In light of the stability theory for functional differential equations, the leader-following exponential consensus problem of multi-agent systems with communication delays is investigated. All the follower agents have identical MIMO linear dynamics which can be expressed in any order, and only the delayed state information of each agent is delivered through(More)
Subband affine projection (SAP) algorithm which combines the advantages of the affine projection algorithm (APA) and subband adaptive filtering (SAF) has been proposed for achieving the improved convergence performance. In this paper, the family of SAP algorithms is presented. Following this, the mean-square performance for this family of SAP algorithms is(More)
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