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"Saturated switching systems treats the problem of actuator saturation, inherent in all dynamical systems by using two approaches: positive invariance in which the controller is designed to work within a region of non-saturating linear behaviour and saturation technique which allows saturation but guarantees asymptotic stability. The results obtained are extended from the linear systems in which they were first developed to switching systems with uncertainties, 2D switching systems, switching systems with Markovian jumping and switching systems of the Takagi-Sugeno type. The text represents a thoroughly referenced distillation of results obtained in this field during the last decade. The selected tool for analysis and design of stabilizing controllers is based on multiple Lyapunov functions and linear matrix inequalities. All the results are illustrated with numerical examples and figures many of them being modelled using MATLAB®. "

"Dalam tugas akhir ini telah berhasil dirancang dan dibuat sebuah system pengendalian penanganan pelanggan untuk perangkat switching Power Line Communication (PLC) untuk mengatur dialling telepon. Perangkat switching tersebut menggunakan mikrokontroler AT89S51 untuk mengontrol switching penanganan pelanggan. Di dalam sistem ini, mikrokontroler mengatur beberapa tugas diantaranya adalah menganalisa status input data yang dimodelkan dengan bit-bit DIP switch, memberi tanda adanya pelanggan yang melakukan panggilan, memberi nada dial tone pada saat kondisi off-hook, memberikan nada kepada pelanggan pemanggil ketika jalur pelayanan ke pelanggan yang dituju dalam kondisi sibuk atau tidak.Sistem switching ini direncanakan menggunakan Amplitude Modulation (AM) dan dapat menampung sebanyak 75 pelanggan. Sistem switching ini akan terhubung ke jala-jala listrik melalui modem PLC. Frekuensi carrier yang akan digunakan berkisar antara 300 kHz ? 400 kHz untuk setiap fase pada jala-jala listrik. Bandwidth yang akan digunakan adalah sebesar 20 kHz, sehingga memungkinkan tersedianya 5 buah kanal frekuensi dalam satu fase. Setiap kanal tersebut dapat digunakan oleh 5 orang pelanggan secara bergantian. Sistem penomoran yang dapat dilakukan adalah sebanyak tiga digit. Tiga digit tersebut masing-masing merepresentasikan kode fase, kode kanal frekuensi dan kode pelanggan.Rancang bangun perangkat switching tersebut dalam proses untuk dikembangkan ke tahap berikutnya menjadi suatu sistem switching yang terintegrasi untuk jaringan komunikasi telepon via modem PLC. Sistem switching tersebut akan dapat bermanfaat sebagai alternatif untuk jaringan komunikasi telepon di pedesaan.

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This Paper describes the development of a switching center for Powerline Communication (PLC) network based on Microcontroller AT89S51. The switching center analyzes the channel input status which is modelled with bit DIP Switches, and an alert status which to warn the destination subscriber about the call from calling subscriber, set dial tone for calling subscriber at offhook condition, send calling tone to the caller and ring to the called one.This switching center is designed based on Amplitude Modulation (AM) and can support for 75 subscribers. This system is connected to the electricity network through PLC modem. The carrier frequency is set between 300-400 kHz for each phase of the electric network. The bandwidth is 20 kHz, hence possible to support 5 frequency channels each phase. Each channel is dedicated to support for 5 subscribers. The numbering system is represented by 3 digits, where each digit represents electric phase code, frequency channel code and the subscriber number of the channel.This switching center prototype is in progress to be developed and integrated in telephony network by using PLC modem. The switching center will be usefull and as a promissing alternative for telephony network in the rural area."