Fu-Juay Chang

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A new criterion for multilevel thresholding is proposed. The criterion is based on the consideration of two factors. The first one is the discrepancy between the thresholded and original images and the second one is the number of bits required to represent the thresholded image. Based on a new maximum correlation criterion for bilevel thresholding, the(More)
MAXNET is a common competitive architecture to select the maximum or minimum from a set of data. However, there are two major problems with the MAXNET. The first problem is its slow convergence rate if all the data have nearly the same value. The second one is that it fails when either nonunique extreme values exist or each initial value is smaller than or(More)
AbstructAn improved version of the chattering alleviation control (CAC) augmented with boundary layer is proposed in this paper. It preserves all the nice features of CAC and exhibits three additional advantageous properties. First, the resultant control law is continuous instead of the discontinuous function proposed in CAC. Second, the chattering level is(More)
In this paper, the design of parallel-connected dc-ac converters using sliding mode controller with GM(1,1) model is presented. AC output voltage regulation and balanced current-sharing among the parallel modules is achieved by means of sliding mode control (SMC). But, the chattering around the sliding surface exists when the system uncertainties values are(More)
In this paper, a terminal sliding mode control (TSMC) with grey prediction for UPS inverters is proposed to maintain very low total harmonic distortion (THD) output voltage under rectifier-type loading conditions and fast dynamic response under step change loading conditions. The proposed controller combines the merits of terminal sliding mode control and(More)
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