Hybrid journal * Containing 1 Open Access article(s) in this issue * ISSN (Print) 1755-9340 - ISSN (Online) 1755-9359 Published by Inderscience Publishers[443 journals]
Authors:Kishorekumar H. Kowdiki, Ranjit Kumar Barai, Samar Bhattacharya Pages: 191 - 217 Abstract: This paper presents a novel robust and autonomous formation control scheme for wheeled mobile robots in the leader-follower formation control framework considering their non-holonomic constraints. In the proposed formation control scheme, the leader robot of the group plans its path of navigation autonomously in a cluttered environment by employing incremental path planning by modified artificial potential field. Then, the follower robots in the group plan their path in order to follow the leader robot by maintaining a particular formation using the separation-bearing (l − <i>Ψ</i>) control. Then the formation control problem has been transformed into a trajectory tracking control problem. The kinematic control component of the tracking controller provides the necessary velocity input for eliminating the non-holonomic constraints, whereas, the sliding mode augmented robust trajectory tracking control component minimises the effects of nonlinearities, model uncertainties, parameter variations, and disturbances. The effectiveness of the proposed control law has been established by simulation studies. Keywords: artificial potential field; autonomous navigation; formation control; leader-follower; trajectory tracking; kinematic control; sliding mode control Citation: International Journal of Systems, Control and Communications, Vol. 10, No. 3 (2019) pp. 191 - 217 PubDate: 2019-06-29T23:20:50-05:00 DOI: 10.1504/IJSCC.2019.100530 Issue No:Vol. 10, No. 3 (2019)
Authors:Khalid Badie, Mohammed Alfidi, Zakaria Chalh Pages: 218 - 234 Abstract: This paper investigates the problem of robust <i>H<SUB align="right">∞</i> control for two-dimensional (2D) discrete state delay systems described by the Fornasini-Marchesini (FM) second model. The parameter uncertainties are supposed to be norm-bounded. Our attention is focused on designing <i>H<SUB align="right">∞</i> state feedback controllers guaranteeing the asymptotic stability and <i>H<SUB align="right">∞</i> performance of the corresponding closed-loop system. A sufficient condition for <i>H<SUB align="right">∞</i> disturbance attenuation performance for the nominal 2D discrete state delay system is first obtained. Next, a stabilising state feedback controller is designed such that the resulting closed-loop system is asymptotically stable and achieves a prescribed <i>H<SUB align="right">∞</i> disturbance attenuation level. Furthermore, the resulting criteria are extended to robust <i>H<SUB align="right">∞</i> control of the uncertain 2D state-delay system. Two examples are given to demonstrate the advantages of the proposed methods. Keywords: 2D discrete system; robust H∞ control; FM second model; linear matrix inequality; LMI Citation: International Journal of Systems, Control and Communications, Vol. 10, No. 3 (2019) pp. 218 - 234 PubDate: 2019-06-29T23:20:50-05:00 DOI: 10.1504/IJSCC.2019.100531 Issue No:Vol. 10, No. 3 (2019)
Authors:Khalid Badie, Mohammed Alfidi, Zakaria Chalh Pages: 235 - 249 Abstract: In this work, a novel evolutionary optimisation algorithm is introduced for the design of broadband matching networks connecting a resistive source generator and a complex inductive load. Impedance matching networks are the key for full transfer of power to the load. They should offer matching over the entire frequency concerned band. A low noise amplifier (LNA) is also optimised to attain the target gain and noise figure specifications over a definite bandwidth, throughout lumped LC elements. Cuckoo search optimisation algorithm (CSOA) is inspired by the life of a bird family, called cuckoo, offers excellent results with simple tuning parameters compared to previous conventional and meta-heuristic optimisation algorithms. It is extremely powerful in solving engineering optimisation problems. Simulation results for broadband impedance matching networks are presented and analysed and the optimised matching network improves well the performances of the circuit. Keywords: broadband; matching network; low noise amplifier; LNA; antenna; cuckoo search algorithm Citation: International Journal of Systems, Control and Communications, Vol. 10, No. 3 (2019) pp. 235 - 249 PubDate: 2019-06-29T23:20:50-05:00 DOI: 10.1504/IJSCC.2019.100532 Issue No:Vol. 10, No. 3 (2019)
Authors:Arun Kumar, Shikha Bharti, Manisha Gupta Pages: 250 - 264 Abstract: The study presents the designing of an orthogonal frequency division multiplexing (OFDM) and filter bank multi carrier (FBMC) modulation techniques. The proposed method consists of OFDM and FBMC prototype filters for transmitting and receiving the data symbols. Both of them are multicarrier technologies used to increase the performance of wireless communication system. Transmission waveform, bit error rate (BER), peak average power ratio (PAPR), capacity and spectrum sensing measurements were simulated and analysed. Keywords: filter band multi carrier; FBMC; orthogonal frequency division multiplexing; OFDM; peak average power ratio; PAPR; capacity; bit error rate; BER Citation: International Journal of Systems, Control and Communications, Vol. 10, No. 3 (2019) pp. 250 - 264 PubDate: 2019-06-29T23:20:50-05:00 DOI: 10.1504/IJSCC.2019.100534 Issue No:Vol. 10, No. 3 (2019)
Authors:J. Kohila, A. Muthu Kumar, S. Kannan Pages: 265 - 280 Abstract: The implementation of custom power devices (CUPD) such as dynamic voltage restorer (DVR), distribution static compensator (DSTATCOM) and unified power quality conditioner (UPQC) has become essential for reducing the impact of PQ problems. More specifically, DVR plays vital role for proving solution to the voltage sag problems and to restore the load voltage with in few milliseconds. The performance of the DVR depends on the control strategy adopted with the algorithm. Synchronous reference frame theory (SRFT)-based ANFIS controller is proposed in this paper. The performance of the proposed control strategy is simulated for various conditions like line to ground, double line to ground and three phase fault in MATLAB/Simulink. From the simulation study, it is found that the ANFIS-based DVR helps to mitigate the voltage sag and reduces the harmonics. The proposed ANFIS-based DVR compared with PI, fuzzy and ANN-based controllers. Keywords: dynamic voltage restorer; DVR; synchronous reference frame theory; SRFT; power quality Citation: International Journal of Systems, Control and Communications, Vol. 10, No. 3 (2019) pp. 265 - 280 PubDate: 2019-06-29T23:20:50-05:00 DOI: 10.1504/IJSCC.2019.100533 Issue No:Vol. 10, No. 3 (2019)
Hybrid journal * Containing 1 
Open Access article(s) in this issue *
