This study is about review of the semi-active electromagnetic suspension system for the motorcycles. The research questions are set in order to understand the research objectives in a better way. Literature review is done from different perspective of the past researches and applied with the calculations. Additionally, the discussion part covers the design of the electromagnetic system and thus covers the components of it and find out the advantages over the motorcycles. Different examples are also provided with the automotive industry.
Keywords: Electromagnetic suspension system, Bose suspension system, Electromagnetic suspension system working procedures and principles, Bose suspension system designing in matlab
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In order to have more comfortable and linear riding experiences, the electromagnetic suspension is used in very high numbers in nowadays vehicle manufacturing processes (Koji Hio, et al. 2005). In order to have better control of the suspension system of the vehicles, the magnetic repulsion principle is used for absorbing the shock produced from a pothole in the road. In addition, as the electromagnetic system provides a very fast reaction to the input signal due to the usages of electromagnetic induction motors, it can provide more beneficial outcomes in a difficult situation. The electrical suspension system helps the vehicle with more efficiency, dynamic behavior as well as stability and accurate control of force. Here in this study, there will be a discussion of electromagnetic suspension system provides. Additionally, the analytical designing of an electrical suspension system will also be provided using simulation software. Furthermore, various theoretical findings, as well as calculation, also included a comparison of analytical findings in the study.
• How the vehicle handling, safety is made with semi-active electromagnetic suspension system?
• How the semi-active electromagnetic suspension system works?
• What are the ways to design semi-active electromagnetic suspension system?
• How the stability is maintained from the road shocks?
In order to develop this research qualitative secondary data has been gathered. In order to understand the scope and importance of the secondary information gathered analysis of the findings are done. For that practical analysis has been done using the Mat lab software. Besides, post positivism research philosophy is used for the development of the research as well. In addition, descriptive research designs also followed as this research design provides scientific analysis of the finding which is very reliable, that is the reason for improving reliability and validity of this research descriptive research design is also used here in this study.
3. Literature review, obtaining new data and discussion
A. Literature review
Electromagnetic suspension system influence the dynamic performance of the vehicle with advanced electronic break force, Distribution, antilock braking systems and electronic stability. This is being ever increasing demand in the automotive industry as this relates to the improved vehicle handling as well as passenger safety. As stated by Wang et al.(2018), EMS can be referred to the magnetic levitation that can be achieved by altering the magnetic field strength and this is produced with the help of electromagnetsthat uses a feedback loop. Motorcycle’s electromagnetic suspension system serves dual purpose that is it contribute to the vehicle handling as well as braking and thus provides comfort as well as safety to the passengers. The comfortably of the passengers are isolated from the bumps, road noise and vibrations. The electromagnetic suspension system is thus considered as the suspension system where the shock absorbers react to the road and adjust. According to ArashRiazian and SoheylZarkandy(2014), magnetic ride control is applied to electromagnetic suspension system and this uses magneto rheological technology for suspension damping. Thus, it is possible to detect the uneven road surfaces and adjusting it with the shock absorbers.
The semi-active EMS introduces infinite inertia as well as suspension system series where electromagnetic actuation is mostly represented with the help of rotary motor. In comparison, as described by Mitenkovet al.(2017), Bose suspension system is the new one which introduces electromagnetic motor as well as power amplifier for the two wheels of the motorcycles and combine set of control algorithms. This linear electromagnetic motor responds quickly and thus keeps safe from the effects of bumps, vibrations and potholes. The main advantage is that the semi-active EMS increases the dynamic behavior of the motorcycles and increases the efficiency. Dual operation of the actuator, accurate force control and stability improvement can also be referred to as the advantages from the electromagnetic suspension system.
In the literature reviews, the gap can be found within the modeling of the system or motorcycle suspension system. The past literatures do not provide the ways roll as well as pitch behavior can be modeled in context of the dynamic behavior of the motorcycle suspension system. This requires extensive research of the sprung as well asunsprung masses, including the disturbances from the roads, and body and wheel height. However, some literature reviews also provide the calculation technique of the rear suspension, total load and magnetic power required per unit are. Thus, the design of the system can be generated and aligned.
From the above discussion, it can be concluded that an effective electromagnetic suspension system will provide more linear control in a vehicle that is more essential for better controlling of the situation. From the comparison with the theoretical information and analytic data, it can be said that analytic information provides more realistic views on the processing of the electromagnetic suspension system. However, theoretical values are essential for gaining insights of the curriculum; Furthermore, it also provides a better understanding about the development process and working procedures of the suspension system.
 ArashRiazian&SoheylZarkandy (2014), ‘Application of semi-active suspension system with friction damper and electromagnetic drive on motorcycles ’Ayandegan Institute of Higher Education, Tonekabon, Iran.
 GurubasavarajuTharehalli Mata, Hemantha Kumar and ArunMahalingam (2018), ‘Performance analysis of a semi-active suspension system using coupled CFD-FEA based non-parametric modeling of low capacity shear mode monotube MR damper’.
 International Journal of Science and Research (IJSR) ISSN (Online): 2319-7064 (2015), AniketBharambe, ‘Magnetic Suspension for Motorcycles’.
 Kim, T.D., Kim, J.H. and Kim, J.H., 2019. Sensitivity Analysis and Optimum Design of Energy Harvesting Suspension System according to Vehicle Driving Conditions. Journal of the Korean Society for Precision Engineering, 36(12), pp.1173-1181.
 Koji Hio, MasaharuSatu, TakaakiUno(2005), ‘Electromagnetic suspension System for Vehicle’, NISSAN Motor Co. ,Ltd.
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