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All Journal Bulletin of Electrical Engineering and Informatics International Journal of Supply Chain Management
Mohamad Khairi Ishak
Universiti Sains Malaysia (USM)
Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Transportation

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Embedded operating system and industrial applications: a review Yew Ho Hee; Mohamad Khairi Ishak; Mohd Shahrimie Mohd Asaari; Mohamad Tarmizi Abu Seman
Bulletin of Electrical Engineering and Informatics Vol 10, No 3: June 2021
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/eei.v10i3.2526

Abstract

The complexity of an embedded system is directly proportional to the requirements of industrial applications. Various embedded operating system (OS) approaches had been built to fulfil the requirements. This review aims to systematically address the similarities and differences of the embedded OS solutions and analyse the factors that will influence decision-making when choosing what solution to use in the applications. This paper reviews three standard solutions; super loop, cooperative, and real-time operating system (RTOS). These are commonly used in industrial applications. By grouping the tasks in the foreground and background execution region, the concept and working principle of each of them are reviewed. The unique feature of RTOS in the context of task switching was used to define the deterministic characteristic of meeting the deadlines. The importance and performance of this characteristic is addressed and compared among various solutions in this paper. Subsequently, this paper reviewed the internet of things (IoT) requirements, automotive, medical and consumer electronics industry. The influential factors on choosing the right embedded OS to be used are extracted based on the requirements. They are reviewed in the perspective of memory footprint, regulated standards, cost-effectiveness, time effectiveness, and scalability.
Compensating the performance of permanent magnet synchronous machines for fully electric vehicle using LPV control Hassam Muazzam; Mohamad Khairi Ishak; Athar Hanif
Bulletin of Electrical Engineering and Informatics Vol 10, No 4: August 2021
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/eei.v10i4.2946

Abstract

The state-of-the-art robust H∞ linear parameter-varying controller is designed for wide speed operating range for non-linear mathematical model of permanent magnet synchronous machines (PMSM) in d-q reference frame for fully electric vehicle. This study propose polytopic approach using rotor speed as scheduling variable to reformulate mathematical model of PMSM into linear parameter varying (LPV) form. The weights were optimized for sensitivity and complementary sensitivity function. The simulation results illustrate fast tracking and enhanced performance of the proposed control technique over wide range of rotor speed. Moreover, as part of this work, the results of H∞ linear parameter varying controller is validated by comparing it with linear quadratic integrator and proportional integral derivative (PID) control techniques to show the effectiveness of the proposed control technique.
The Impacts of Relational Norms and Relationship Quality on Franchise Firm’s Performance: The empirical of Malaysian Franchisee Khairol Anuar Ishak; Nazlina Zakaria; Mohamad Khairi Ishak
International Journal of Supply Chain Management Vol 7, No 6 (2018): International Journal of Supply Chain Management (IJSCM)
Publisher : International Journal of Supply Chain Management

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Franchising is one of the best way for expanding a business in the competitive industry and global market. Franchising industries are growing rapidly in most countries and have contributed to the growth of gross domestic product. This study adopts a quantitative approach, applying a cross-sectional study. This study attempts to examine empirically relational mechanisms which may influence the relationship quality and business performance in franchising relationship from franchisees perspective. The findings reveal that relational mechanisms are crucial in affecting franchisee relationship quality. The results provide strong evidence that franchisee relationship quality is found to significantly affect business performance in the franchise system.
Co-Authors Athar Hanif Hassam Muazzam Khairol Anuar Ishak Mohamad Tarmizi Abu Seman Mohd Shahrimie Mohd Asaari Nazlina Zakaria Yew Ho Hee