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- Dirman Hanafi, Mongkhun Qetkeaw, Rozaimi Ghazali, Mohd Nor B. Mohd Than, W. M. Utomo, Rosli Omar
- 2013

This paper presents the development of remotely operated Quadcopter system. The Quadcopter is controlled through a graphical user interface (GUI) where the communication between GUI and Quadcopter is constructed by using wireless communication system. The Quadcopter balancing condition is sensed by FY90 controller and IMU 5DOF sensor. For smooth landing,â€¦ (More)

- Rozaimi Ghazali, Y. M. Sam, M. F. Rahmat, C. C. Soon, H. I. Jaafar, Zulfatman
- 2015 10th Asian Control Conference (ASCC)
- 2015

The main objective of this paper is to perform a robust controller design using discrete-time sliding mode control (DSMC). In the control scheme, two-degree-of-freedom (2-DOF) control strategy turns the DSMC, which generally utilized state feedback into output feedback controller. The designed control scheme is considered with feedback and feedforwardâ€¦ (More)

- T. G. Ling, M. F. Rahmat, Abdul Rashid Husain, Rozaimi Ghazali
- 2011 4th International Conference on Mechatronicsâ€¦
- 2011

This paper presents the system identification process done on an industrial Electro-Hydraulic Actuator (EHA) system. The model obtained through system identification by aid of System Identification Toolbox of MATLAB and System Identification Toolkit of LabVIEW. Attraction of system identification is ability to obtain system's model with sets of input andâ€¦ (More)

- Rozaimi Ghazali, Y. M. Sam, Mohd Fua'ad Rahmat, Zulfatman
- 2009 IEEE Student Conference on Research andâ€¦
- 2009

This paper presents experimental on-line identification of an electro-hydraulic system represented by a discrete time model. A recursive least square (RLS) method is used to estimate the unknown parameters of the system based on auto regression with exogenous input (ARX) model. Residual analysis is used for model validation. Results are presented which showâ€¦ (More)

- Rozaimi Ghazali, Y. M. Sam, M. F. Rahmat, Zulfatman
- 2010 IEEE Conference on Robotics, Automation andâ€¦
- 2010

This paper presents experimental work on recursive identification of an electro-hydraulic system that represented by a discrete-time model in open-loop and closed-loop configurations. A recursive least square (RLS) method is used to estimate the unknown parameters of the system based on auto regression with exogenous input (ARX) model. Residual analysis isâ€¦ (More)

This paper presents the position tracking performance of an electro-hydraulic hydraulic servo (EHS) system using sliding mode control (SMC) with proportional-integral-derivative (PID) sliding surface. In modelling process, a mathematical model of the EHS system is developed by considering its nonlinearities as represented by a Lu-Gre friction model. Theâ€¦ (More)

- Rozaimi Ghazali, Y. M. Sam, M. F. Rahmat, A. W. I. Mohd Hashim, Z. Zulfatman
- 2010 IEEE Student Conference on Research andâ€¦
- 2010

This paper evaluates the position tracking performance of an electro-hydraulic hydraulic servo (EHS) system using sliding mode control (SMC). The EHS system is established in modelling process by consider its nonlinearities with a friction model. The control strategy is derived from developed dynamics equation and stability of the control system isâ€¦ (More)

- Sahazati Md Rozali, M. F. Rahmat, Naemah Abdul Wahab, Rozaimi Ghazali, Zulfatman
- 2010 IEEE Student Conference on Research andâ€¦
- 2010

Electro-hydraulic system (EHS) consists of several dynamic parts which are widely used in motion control application. These dynamic parts need to be controlled to determine direction of the motion. Mathematical model of EHS is required in order to design a controller for the system. In this paper, system identification technique is used for system modeling.â€¦ (More)

- H. I. Jaafar, S. Y. S. Hussien, Rozaimi Ghazali, Z. Mohamed
- 2015 10th Asian Control Conference (ASCC)
- 2015

This paper presents a combination of the Priority Fitness Scheme (PFS) and optimization techniques to find the optimal performances of the Gantry Crane System. Control algorithm that based on the PFS will be designed and used as fitness function in PSO and BPSO. PFS are prioritized based on Steady State Error (SSE), Overshoot (OS) and Settling Time (Ts)â€¦ (More)

- Rozaimi Ghazali, Y. M. Sam, M. F. Rahmat, Dirman Hanafi, Zulfatman
- 2012 24th Chinese Control and Decision Conferenceâ€¦
- 2012

Electro-hydraulic actuator (EHA) system inherently suffers from uncertainties, nonlinearities and time-varying in its model parameters which makes the modeling and controller designs are more complicated. The main objective of this paper is to perform a robust control design using discrete-time sliding mode control (DSMC) with two-degree-of-freedom controlâ€¦ (More)