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M. Zainon
Universiti Teknikal Malaysia Melaka
Computer Science & IT Electrical & Electronics Engineering

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Enhanced self-regulation nonlinear PID for industrial pneumatic actuator S. N S. Salim; M. F. Rahmat; L. Abdullah; S. A. Shamsudin; M. Zainon; A. F. M. Amin
International Journal of Electrical and Computer Engineering (IJECE) Vol 9, No 4: August 2019
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (801.693 KB) | DOI: 10.11591/ijece.v9i4.pp3015-3024

Abstract

The present article describes the improvement of Self-regulation Nonlinear PID (SN-PID) controller. A new function is introduced to improve the system performance in terms of transient without affecting the steady state performance. It is used to optimize the nonlinear function available on this controller.  The signal error is reprocessed through this function, and the result is used to tune the nonlinear function of the controller. Furthermore, the presence of the dead zone on the proportional valve is solved using Dead Zone Compensator (DZC). Simulations and experiments were carried out on the pneumatic positioning system. Comparisons between the existing methods were examined and successfully demonstrated.
Modeling and Simulation of Nine-Level Cascaded H-Bridge Multilevel Inverter A.A. Zulkefle; A.I.A. Rahman; M. Zainon; Z.A. Baharudin; Z. Zakaria; M.B. Farriz; S.A.A. Shukor; N.F. Johan; N. Saleh; M.A.M. Hanafiah
Indonesian Journal of Electrical Engineering and Computer Science Vol 11, No 2: August 2018
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v11.i2.pp696-703

Abstract

This paper analyzed a single phase nine level cascaded h-bridge multilevel inverter (CHMLI) topology in which requires lesser number of components and easier to control if compared to other methods. The inverter of different voltage levels (up to 9-Levels) are designed and simulated using MATLAB Simulink. A Level Shifted Multi-Carrier PWM control scheme is used to control the operation of the power switches for CHMLI topology. The results are compared in terms of THD.  The value of THD is found to be reduced as the number of voltage level of CHMLI is increased.
Sub Microsecond Analysis of Negative Cloud-To-Ground Lightning Flashes A.I.A. Rahman; M.A. Bahari; Z.A. Baharudin; A.A. Zulkefle; M. Zainon; M.A.M. Hanafiah
Indonesian Journal of Electrical Engineering and Computer Science Vol 11, No 2: August 2018
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v11.i2.pp711-717

Abstract

This paper expounds a development software for the identification of lightning discharge in cloud-to-ground flashes. The study was to reduce a misleading detection of the electric field radiation of a lightning discharge profile by considering the important parameters of sub microseconds structure of lightning return stroke. The software was built-in MATLAB. The development of the software considered the important parameter of return strokes such as peak value, zero crossing, rising time and fast transition time. We used a modelling technique for training and patterning the 19 return stroke from electric radiation field generated by the negative cloud-ground lightning flashes recorded in Universiti Teknikal Malaysia Melaka. The 19 return strokes data were recorded by using Lecroy HDO4024 with 5 MS/s. The results showed that the software had the ability to recognize the lightning parameters such as peak value, zero crossing, rising time and fast transition time. In conclusion, the software was able solved the uncertainty of the unknown cloud-to-ground lightning flashes parameter.
Comparison of Chemical Compounds of Essential Oils from Natural Agarwood and Inoculated Agarwood (Roselle-Based Inoculation) N.R.M. Nasardin; M.A.M. Hanafiah; M. Zainon; M. Ibrahim; A.I.A. Rahman; Z.A. Baharudin; M.H.M. Husin; I. Mahir; A.A. Zulkefle
Indonesian Journal of Electrical Engineering and Computer Science Vol 11, No 2: August 2018
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v11.i2.pp677-681

Abstract

In this paper, the physical and structural properties of the natural agarwood and inoculated agarwood using Roselle-based inoculation had been discussed. The results showed that a high volume of oil obtained on day 1 by the inoculated agarwood which yielded 3ml of the agarwood oil as compared to the natural agarwood that had yielded only 2.3ml. In the chemical analysis, five major compounds were detected by FTIR which were C-O bond (aromatic alkane), C-C stretching (aromatic alkane), C-O stretching (ether) and C-H bond (aromatic ring) in both oils. Moreover, the inoculated agarwood exhibited better oil production compared to the natural agarwood.
Co-Authors A. F. M. Amin A.A. Zulkefle A.I.A. Rahman I. Mahir L. Abdullah M. F. Rahmat M. Ibrahim M.A. Bahari M.A.M. Hanafiah M.B. Farriz M.H.M. Husin N. Saleh N.F. Johan N.R.M. Nasardin S. A. Shamsudin S. N S. Salim S.A.A. Shukor Z. Zakaria Z.A. Baharudin