Design of a vehicle height and body posture adjustment hybrid automaton of electronically controlled air suspension

Qiguo, Hu; Lu, Wei; Jiang, Jingzhen

doi:10.1002/acs.3299

Cited by 9 publications

(5 citation statements)

References 17 publications

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“…Electronic control air suspension (ECAS) height adjustment function in trucks makes loading and unloading operations easier. 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].…”

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

“…Setting the height deadband too small leads to frequent opening of the solenoid valve, which triggers the vehicle height oscillation and leads to attitude destabilization; conversely, the accuracy of the vehicle height control is poor. Hu et al [17], by using the mixed logical dynamical (MLD) approach, proposed a novel control strategy to adjust the vehicle height by controlling the on-off statuses of the solenoid valves directly, but essentially, it still does not solve the limitations of the switch control method.…”

Section: Introductionmentioning

confidence: 99%

Height Control Strategy Design and Simulation of Electronic Control Air Suspension for Trucks

Zhang,

Zhao

et al. 2024

WEVJ

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To address the large height error and attitude destabilization phenomenon in regulating the frame height of trucks with electronic control air suspension (ECAS), a height control strategy was designed. Firstly, the fundamental principles of height control were elucidated based on the single degree-of-freedom (DOF) vehicle model. The limitations of the classic non-linear mathematical model for the air spring were also highlighted. Thus, a dynamic model was constructed, consisting of an AEMSim model for the ECAS and a Simulink model for the truck. A frame height fuzzy controller was designed based on the fuzzy control theory to improve the height control accuracy and to solve the control conflict problem of the solenoid valves. Additionally, three typical control modes of the height and corresponding control strategies were proposed based on the practical requirements of usage scenarios for trucks. Finally, dynamic simulations were conducted under different modes. The results show that, compared to the existing switching control method, the proposed control approach can reduce height control errors by an order of magnitude and decrease the pitch angle by over 30%. The steady-state error remains nearly unchanged under the 30% variation of the sprung mass. The proposed control approach exhibits the superior control performance and robustness. It effectively reduces height errors and avoids the posture instability during the adjustment of the ECAS.

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“…They built a vehicle model based on mixed logic dynamics and designed the switching strategy of the solenoid valve. The coordinated control between the ECAS system body height and attitude is well solved, and good vibration isolation performance and stability are achieved [11].…”

Section: Introductionmentioning

confidence: 99%

Model-Based Fault Diagnosis of Actuators in Electronically Controlled Air Suspension System

Jiang

Shan

2022

WEVJ

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The air suspension adjusts the height of the vehicle body through charging and bleeding air to meet the high performance of the vehicle, which needs a reliable electronic control system. Through fault tree analysis of the electronically controlled air suspension (ECAS) system and considering the correlation between the duty cycle and flow rate of the air spring solenoid valve, the fault model of the solenoid valve is constructed, and the fault diagnosis design method of the ECAS system solenoid valve based on multiple extended Kalman filter banks (EKFs) is proposed. An adaptive threshold is used to realize fault diagnosis, and active fault-tolerant control is carried out based on an analytical model. The real controller based on d2p rapid prototyping technology and the vehicle model based on AMESim are further verified on the hardware-in-the-loop (HiL) simulation test platform and compared with the pure simulation results. The test results show that the fault diagnosis and fault-tolerant control algorithm can work normally in the actual controller, and can effectively realize the fault diagnosis and fault-tolerant control of the actuator in the vehicle ECAS system.

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Design of a vehicle height and body posture adjustment hybrid automaton of electronically controlled air suspension

Cited by 9 publications

References 17 publications

The Evolution of Vehicle Pneumatic Vibration Isolation: A Systematic Review

The Evolution of Vehicle Pneumatic Vibration Isolation: A Systematic Review

Height Control Strategy Design and Simulation of Electronic Control Air Suspension for Trucks

Model-Based Fault Diagnosis of Actuators in Electronically Controlled Air Suspension System

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