Development of a control method for an electromagnetic semi-active suspension reclaiming energy with varying charge voltage in steps

Chen, S A; Li, Xiaopeng; Zhao, Lin; Wang, Y X; Kim, Y B

doi:10.1007/s12239-015-0077-3

Cited by 19 publications

(11 citation statements)

References 17 publications

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“…The number of charging batteries η can be determined from the different switch state combinations. For example, if the switches S 2 and S 3 are closed with the others opened, then η = 0; if the switches S 1 and S 2 are closed with the others opened, then η = 1; if the switches S 1 and S 4 are closed with the others opened, then η = 2, and so on [37], [38]. When the number of the charge batteries equals η, the three-phase current i a , i b , and i c are written as follows…”

Section: Actuator Mathematical Modelingmentioning

confidence: 99%

Experimental Research on PMSM Ball Screw Actuator and Structural Design Suggestion of Featured Active Suspension

2020

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Aiming to develop a practical active suspension, a PMSM ball screw actuator prototype is manufactured and experimented for parameter identification. Based on identification results, a new doublevibration-reduction-structure for the featured active suspension is proposed to cope with the problem caused by the actuator's overlarge equivalent inertial mass. Unlike using a resistance to absorb output energy of the actuator, a method of varying charge voltage in steps is utilized to reclaim vibration energy into the battery pack directly. The mechanical and energy-regenerative characteristics are tested for verification of the marked parameters and identification of the unmarked parameters, especially for the Coulomb damping and the equivalent inertial mass of the actuator prototype. Besides, a high energy-regenerative efficiency and a large capability of electromagnetic control force are achieved, the overlarge equivalent inertial mass exists. To reduce the amplified demand of the active control force caused by the actuator's overlarge equivalent inertial mass directly exposed to the unsprung mass acceleration, the new double-vibration-reductionstructure (DVRS) based active suspension structure scheme suggestion with an added-vibration-reductionstructure (AVRS) between the actuator and the unsprung mass is proposed. Regulated by the corresponding LQG controller, the proposed active suspension can achieve almost the same performance of the conventional ideal active suspension.

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Section: Actuator Mathematical Modelingmentioning

confidence: 99%

Experimental Research on PMSM Ball Screw Actuator and Structural Design Suggestion of Featured Active Suspension

2020

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“…Active suspension can effectively improve vehicle riding comfort and handling stability by outputting active force of the actuator [1][2][3]. However, the active suspension actuator needs to consume a large amount of external energy and it reduces the economic performance of the vehicle [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Endocrine Composite Skyhook-Groundhook Control of Electromagnetic Linear Hybrid Active Suspension

Kou

Jing

Chen

et al. 2020

Shock and Vibration

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In order to effectively improve vehicle riding comfort, handling stability, and realize vibration energy recovery, a new kind of electromagnetic linear hybrid active suspension (EMLHAS) integrated with linear motor and solenoid valve shock absorber is put forward. Firstly, for the analysis of the suspension performance, a quarter dynamic model of EMLHAS is established. At the same time, the mathematical models of a linear motor, including the active state and energy-regenerative state, are found. The correctness of mathematical models for the linear motor in the active and energy-regenerative states is verified by means of characteristic tests. Moreover, the velocity characteristic tests of solenoid valve shock absorber are carried out to determine its mathematical polynomial model in the semiactive state. Then, a new kind of multimode endocrine composite skyhook-groundhook control strategy is proposed. The suspension motion is divided into four modes according to the driving conditions of the vehicle. An endocrine control with long feedback and short feedback is combined with the skyhook-groundhook control. The control laws of the skyhook-groundhook controller and endocrine controller are, respectively, designed. Finally, the simulation analysis of suspension dynamic performance and energy-regenerative characteristic is done. The results show the control effect of endocrine composite skyhook-groundhook control is better than that of skyhook-groundhook control, which improves vehicle riding comfort and handling stability. Moreover, part of vibration energy is recovered.

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“…To realize nonlinear disturbance suppression, an adaptive robust controller was designed for active suspension by Sun et al [6]. An integrated control system was also applied for the electromagnetic suspension to reclaim energy for calculating the real-time ideal control force [7]. However, most of those suspension systems consider the effects in a conventionally structured vehicle, and do not specifically consider the impact force received by electric vehicles driven by IWMs.…”

Section: Introductionmentioning

confidence: 99%

Vertical vibration control of an in‐wheel motor‐driven electric vehicle using an in‐wheel active vibration system

Ren

Wang

2018

Asian Journal of Control

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The objective of this study is to present a novel in‐wheel (IW) active vibration system for an IW motor (IWM)‐driven electric vehicle to overcome the negative effects of vertical vibration due to road roughness and the impact of rotary inertial forces from the IWM. First, the reason for the poor ride comfort of the general electric wheel structure is examined by theoretical derivation. Second, a 6 degree‐of‐freedom (DOF) vehicle model is established and the corresponding cost function based on 10 ride comfort indexes is proposed. Third, a fuzzy optimal sliding mode (FOSM) control method is presented and the IW active vibration system is designed by applying this proposed control theory. Then, normalization and analytic hierarchy process (AHP) methodologies are adopted to select reasonable weighted coefficients of performance indexes. Finally, the advantages of the electric vehicle with the IW active vibration system are illustrated by MATLAB/Simulink. Analysis results demonstrate the feasibility and effectiveness of the proposed method.

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Development of a control method for an electromagnetic semi-active suspension reclaiming energy with varying charge voltage in steps

Cited by 19 publications

References 17 publications

Experimental Research on PMSM Ball Screw Actuator and Structural Design Suggestion of Featured Active Suspension

Experimental Research on PMSM Ball Screw Actuator and Structural Design Suggestion of Featured Active Suspension

Endocrine Composite Skyhook-Groundhook Control of Electromagnetic Linear Hybrid Active Suspension

Vertical vibration control of an in‐wheel motor‐driven electric vehicle using an in‐wheel active vibration system

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