Research on Switching Interconnection Modes and Game Control of Interconnected Air Suspension

Abstract

To solve the contradiction between handling stability and ride comfort of vehicles with interconnected air suspension system (IASS) and reduce the energy consumption of air suspension with adjustable spring stiffness, a coordinated control for dynamic performance was designed based on the logic of switching interconnection modes and game control for the damper. The control system consists of a switching controller for air suspension interconnection modes and a distribution controller for the damping force. The switching controller determines the optimal air suspension interconnection mode by calculating the vehicle dynamic performance index in real-time. The distribution controller achieves a distribution for optimal damping force based on an infinite time differential game. veDYNA software that is a vehicle dynamics analysis software based on MATLAB/Simulink was used to verify the algorithm, and the accuracy was verified by a bench test. Finally, the results show this coordinated system can significantly improve the ride comfort and restrain the pitching motion. Compared with traditional suspension, the vertical acceleration decreases by 18.32% and the dynamic stroke decreases by more than 10% under the straight condition; the vertical acceleration decreases by 12.24% and the roll angle decreases by 1.26% under the steering condition.

Configuration development and optimization of hydraulically interconnected suspension for handling and ride enhancement

“…Recent studies have shown this index is able to reveal the deviation of responses. 29 A lower value of J X represents a better suspension damping performance.…”

Special Issue on Electronic Systems and Energy Harvesting Methods for Automation, Mechatronics and Automotive

“…In addition, several control strategies were proposed for reducing the power consumption variable setting suspension systems. Specifically, in the paper titled "Research on Switching Interconnection Modes and Game Control of Interconnected Air Suspension", the authors introduced a novel control system for interconnected air suspension systems based on the logic of switching interconnection modes and game control for the damper [18]. It includes a switching controller for air suspension interconnection modes and a distribution controller for the damping force; the first determines the optimal IASS mode dynamically, calculating the vehicle dynamic performance index in real-time.…”

Development of an optimized game controller for energy saving in a novel interconnected air suspension system

“…The researchers studied the roll, 13–15 pitch, 16,17 elimination torsion, 18 and vibration isolation characteristics 19,20 and stability 21,22 in the air suspension field. Energy saving is a goal for many scholars in different fields of automotive engineering such as the transmission system, 23–26 driving cycle, 27–29 suspension system, 30–32 magnetorheological dampers, 33 energy harvesting, 34 and so on. Sun et al 30 declared that the interconnected system causes energy reduction due to not using compressor.…”

“…The game rules can decide how interconnected solenoid valves switch on/off. 30 The commands depend on the dynamical performance of the vehicle and air spring pressure, as it is depicted in Figure 7. The initial rules are given in Figure 7, so by trying different values are given in Table 3 and considering a cost function according to equation (14), the best variables are obtained.…”