Pub Date : 2024-11-04DOI: 10.1109/TCSII.2024.3491032
Yongxiao Tian;Zepeng Ning;Huaicheng Yan;Yan Peng
This brief focuses on the observer-based output-feedback (OBOF) control of discrete-time semi-Markov jump linear systems (SMJLSs) with bilateral bounds of sojourn time. To lessen the conservatism in OBOF controller design, we develop a decoupling technique that facilitates the simultaneous design of the time-elapsed-reliant observer and controller, which also alleviates the computational burden. Following this approach, mean-square stability analysis and OBOF control synthesis are implemented for SMJLSs by resorting to semi-Markov kernel within an equivalent closed-loop augmented system. The theoretical results are validated through an electromagnetic oscillation circuit to elucidate the efficacy and practical utility of the proposed control methodology.
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In this brief, an on-chip AC coupled analog front-end circuit with asymmetric output stage is proposed for a pulsed direct time-of-flight LiDAR receiver. The AFE employs a novel on-chip AC coupled scheme for APD cathode bias voltage tuning in a cost-effective manner. A reverse current cancellation circuit helps the circuit recover rapidly under large input current. A transimpedance amplifier is designed for low noise which is desirable to process weak signals. An asymmetric output stage doubles the output swing under the same bias current compared to conventional current mode logic topology. This prototype chip is fabricated in a standard 180 nm CMOS process and the measurement results shows bandwidth, gain, input-referred noise current of 151 MHz, 102 dB $Omega $