Anti-Rolling Suspension for an Automobile by Coupled Electromagnetic Devices

Hayashi, Ryuzo; Suda, Yoshihiro; Nakano, Kimihiko

doi:10.1299/jmtl.1.43

Cited by 13 publications

(4 citation statements)

References 7 publications

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“…The characteristics of the EMD are taken from Hayashi et al 32 and represented in Table 2. The mass of the EMD is assumed to be 10 kg added to the sprung mass.…”

Section: Mathematical Modelling Of the Electromagnetic Suspension Systemmentioning

confidence: 99%

Road profile effects on the performance and energy regeneration of the electromagnetic suspension system

Kavianipour¹,

Montazeri-Gh²

2014

Proceedings of the Institution of Mechanical Engineers, Part K:

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This paper deals with the electromagnetic damper, which is composed of a permanent-magnet DC motor, a ball screw and a nut, as the passive, semi-active and active actuator in the vehicle suspension system. The main objective pursued in the paper is to study the dependences of the performance and energy regeneration of the electromagnetic suspension system on the road unevenness and the travel speed. For this purpose, the nonlinear equations of the electromagnetic damper electric circuit in the three mentioned suspension systems are developed. For the vehicle passing over the road unevenness, a seven degrees of freedom model is considered, and the simplest point-follower model is used for the tyre representation. To investigate the electromagnetic suspension system performance and energy regeneration, two types of road unevenness including a road section with a standard pure random profile and a bump modelled by cosine wave of variable height and length are applied. The simulation results demonstrate that an increase in the travel speed leads to the power spectral density increment of the road profile and in turn causes the negative effects on the performance and growth in the energy regeneration. Furthermore, when the bump height gets larger, maximum body acceleration, maximum suspension travel and energy regeneration will increase. There will be a peak on the maximum body acceleration response course when the bump length is equal to 1.1 m because of exciting the sprung mass frequencies. On the maximum suspension travel and energy regeneration response course, there is a peak when the travel speed is equal to 30 km/h, which excites the unsprung mass frequencies.

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“…The characteristics of the EMD are taken from Hayashi et al 32 and represented in Table 2. The mass of the EMD is assumed to be 10 kg added to the sprung mass.…”

Section: Mathematical Modelling Of the Electromagnetic Suspension Systemmentioning

confidence: 99%

Road profile effects on the performance and energy regeneration of the electromagnetic suspension system

Kavianipour¹,

Montazeri-Gh²

2014

Proceedings of the Institution of Mechanical Engineers, Part K:

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“…The characteristics of the EMD are taken from Ref. 26 and represented in Table 2. c e is supposed to be 20 Ns/m and the mass of the EMD (m EMD ) is assumed to be 10 kg added to the unsprung mass (m u ).…”

Section: Transfer Functions Of the Aemssmentioning

confidence: 99%

Investigation of the active electromagnetic suspension system considering hybrid control strategy

Montazeri-Gh¹,

Kavianipour²

2013

Proceedings of the Institution of Mechanical Engineers, Part C:

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This paper deals with an electromagnetic damper, which is composed of a permanent-magnet direct current motor, a ball screw, and a nut, as an active actuator. The main objective pursued in the paper is to study the active electromagnetic suspension system (AEMSS) considering hybrid control strategy (the hybrid control strategy is a linear combination of skyhook and groundhook control strategy). For this purpose, the nonlinear equations of the electric circuit of the AEMSS should be developed. Supposing linear conditions, the coefficients determination of the hybrid control strategy is carried out in the frequency domain using the genetic algorithm in order to improve the vehicle performance and energy regeneration simultaneously. Afterwards, the achieved coefficients are used to examine the designed AEMSS in the actual conditions for an actual road profile. The simulation results demonstrate that the designed AEMSS has the desired performance while energy can be regenerated from the road excitation and transformed into electric energy. Furthermore, it has been shown that the designed AEMSS regenerates energy during the ascent and descent of a bump and consumes energy near the top of the bump.

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“…In recent years, researchers have designed various active suspension systems, including those with rack and pinion rotating motors [11][12][13][14], ball screw mechanisms [15][16][17][18], hydraulic actuating quarter-car active suspension systems [19], and electromagnetic suspension [20][21][22], among others. With the development of electromagnetic control technology and PM material, electromagnetic suspension as a new type of suspension structure has become of interest for researchers, such as traditional hydraulic dampers with a linear motor [23], mechanisms with a ball screw mechanism and two one-way clutches [24], coreless linear tube actuators with a special topology [25,26], electromagnetic and hydraulic suspensions [27], and rotating semi-active electromagnetic variable stiffness devices [28], and so on.…”

Section: Introductionmentioning

confidence: 99%

Research on Magnetic Characteristics and Fuzzy PID Control of Electromagnetic Suspension

Wei

2023

Actuators

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This paper proposes an electromagnetic suspension with an electromagnetic actuator, which can improve the riding comfort and stability of the vehicle without changing the safety of traditional MacPherson suspension. First, the electromagnetic suspension structure is introduced, and the principle of the proposed actuator is described in detail. Second, a magnetic flux density model of a single PM ring (permanent magnetic ring) and a magnet assembly are built, and a theoretical analysis of the magnetic flux density is carried out for comparison. Then, the magnetic flux distribution of the magnetic field is simulated and analyzed using the finite element method (FEM), and is compared with theoretical and other experimental data. Finally, a vehicle dynamics model with 7 DOF is built, and vehicle simulations based on the fuzzy PID algorithm are carried out on a C-grade road surface and a deceleration strip. The theoretical results and simulation analyses of the FEM indicate that compared with the MacPherson suspension, the root mean square values of the acceleration of centroid acceleration for the electromagnetic suspension are increased by 59.08% and 33.34%, respectively, on a C-grade road surface and a deceleration strip, and other physical quantities have also been improved. The structure and characteristics of the proposed electromagnetic suspension that improve the riding comfort of the suspension and enhance the stability of the MacPherson suspension are feasible.

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Anti-Rolling Suspension for an Automobile by Coupled Electromagnetic Devices

Cited by 13 publications

References 7 publications

Road profile effects on the performance and energy regeneration of the electromagnetic suspension system

Road profile effects on the performance and energy regeneration of the electromagnetic suspension system

Investigation of the active electromagnetic suspension system considering hybrid control strategy

Research on Magnetic Characteristics and Fuzzy PID Control of Electromagnetic Suspension

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