Height Adjustment of Vehicles Based on a Static Equilibrium Position State Observation Algorithm

Gao, Zepeng; Chen, Sizhong; Zhao, Yuzhuang; Jiang, Nan

doi:10.3390/en11020455

Cited by 10 publications

(5 citation statements)

References 33 publications

(42 reference statements)

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“…Additionally, adjusting the height of the third axle according to momentary requirements can signifcantly improve the performance and driving properties of a truck as well as reduce tire wear [97][98][99][100]. Figure 4(a) illustrates a classical schematic diagram of ECAS vehicle height adjustment based on the static equilibrium position state observation algorithm [101]. Figure 4(b) also depicts the layout of the air suspension system using active air spring dampers [20].…”

Section: Combomentioning

confidence: 99%

The Evolution of Vehicle Pneumatic Vibration Isolation: A Systematic Review

Atindana,

Xu,

Nyedeb

et al. 2023

Shock and Vibration

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Whole-body vibration (WBV) is a significant concern for vehicle users as it can negatively impact their health and comfort. As such, effective vibration isolation is critical in vehicle suspension design. The ability of a vehicle suspension to isolate vibrations depends primarily on the suspension design and the type of springs used. One type of spring that has proven advantageous for vibration isolation is the air spring. Air springs can vary frequencies and adjust their stiffness in response to different loading conditions, making them ideal for meeting both suspension load-carrying and occupants’ comfort requirements. Pneumatic (air) suspension has been in use in the automotive industry for several decades and has undergone significant advancements during this period. This paper presents a systematic review of pneumatic suspension since its inception. The review highlights different air spring modeling techniques, types of pneumatic suspension, and control methods. The study also discusses the functional flexibility of pneumatic suspension, its ability to offer a wide range of control options to drivers, and its broad application in almost all ranges of vehicles, including chassis, cabin, and seat suspension systems. In addition, this paper presents a summary of the pros and cons of pneumatic suspension and suggests future research directions. The advantages of pneumatic suspension include effective vibration isolation, improved ride comfort, and the ability to adjust suspension stiffness and ride height. On the other hand, the disadvantages include higher cost and complexity compared to other types of suspension. Overall, the findings of this review demonstrate that pneumatic suspension is a viable solution for vehicle suspension design, particularly in situations where vibration isolation and ride comfort are critical.

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Section: Combomentioning

confidence: 99%

The Evolution of Vehicle Pneumatic Vibration Isolation: A Systematic Review

Atindana,

Xu,

Nyedeb

et al. 2023

Shock and Vibration

View full text Add to dashboard Cite

show abstract

“…Statistical weights were estimated for the covariance. Based on the vehicle system derived above, the observation equations, and the principle of UT, the unscented Kalman filter procedure is as follows [21][22][23][24][25][26]:…”

Section: Unscented Kalman Filter Frameworkmentioning

confidence: 99%

Huber-Based Robust Unscented Kalman Filter Distributed Drive Electric Vehicle State Observation

et al. 2021

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Accurate and real-time acquisition of vehicle state parameters is key to improving the performance of vehicle control systems. To improve the accuracy of state parameter estimation for distributed drive electric vehicles, an unscented Kalman filter (UKF) algorithm combined with the Huber method is proposed. In this paper, we introduce the nonlinear modified Dugoff tire model, build a nonlinear three-degrees-of-freedom time-varying parametric vehicle dynamics model, and extend the vehicle mass, the height of the center of gravity, and the yaw moment of inertia, which are significantly influenced by the driving state, into the vehicle state vector. The vehicle state parameter observer was designed using an unscented Kalman filter framework. The Huber cost function was introduced to correct the measured noise and state covariance in real-time to improve the robustness of the observer. The simulation verification of a double-lane change and straight-line driving conditions at constant speed was carried out using the Simulink/Carsim platform. The results show that observation using the Huber-based robust unscented Kalman filter (HRUKF) more realistically reflects the vehicle state in real-time, effectively suppresses the influence of abnormal error and noise, and obtains high observation accuracy.

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“…With the development of automobile industry, the active suspension has demonstrated its capability in (1) improving ride comfort, i.e., reducing vehicle body acceleration, and (2) the safety performance constraint, such as suspension dynamic displacement, tire dynamic payload, and actuator input saturation [ 2 , 4 , 5 , 6 ]. As it is convenient to employ electronically-controlled active air suspension (AAS) systems to adjust the ride height by inflating and deflating the air spring, they have drawn attention from automobile manufactories (e.g., Tesla) and have been extensively utilized in commercial vehicles [ 7 , 8 , 9 ].…”

Section: Introductionmentioning

confidence: 99%

Nonlinear Ride Height Control of Active Air Suspension System with Output Constraints and Time-Varying Disturbances

Zhao

Xie

Zhao

et al. 2021

Sensors

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This paper addresses the problem of nonlinear height tracking control of an automobile active air suspension with the output state constraints and time-varying disturbances. The proposed control strategy guarantees that the ride height stays within a predefined range, and converges closely to an arbitrarily small neighborhood of the desired height, ensuring uniform ultimate boundedness. The designed nonlinear observer is able to compensate for the time-varying disturbances caused by external random road excitation and perturbations, achieving robust performance. Simulation results obtained from the co-simulation (AMESim-Matlab/Simulink) are given and analyzed, demonstrating the efficiency of the proposed control methodology.

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Height Adjustment of Vehicles Based on a Static Equilibrium Position State Observation Algorithm

Cited by 10 publications

References 33 publications

The Evolution of Vehicle Pneumatic Vibration Isolation: A Systematic Review

The Evolution of Vehicle Pneumatic Vibration Isolation: A Systematic Review

Huber-Based Robust Unscented Kalman Filter Distributed Drive Electric Vehicle State Observation

Nonlinear Ride Height Control of Active Air Suspension System with Output Constraints and Time-Varying Disturbances

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