Optimizing the Parameter of the LQR Controller for Active Suspension System

Tran, Thi Thu Huong; Nguyen, Tuan Anh; Hoang, Thang Binh; Nguyen, Duc Ngoc; Dang, Ngoc Duyen

doi:10.1007/978-981-19-1968-8_21

Cited by 3 publications

(3 citation statements)

References 22 publications

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“…The novelty of the proposed control law relies on harnessing prominent features of both controllers; PID and SMC. Moreover, in contrast to most of the reported studies for example, References 23, 40–42, which used a single loop algorithm to determine the optimal values of the controller parameters, the present study introduces a novel double-loop method to estimate the required parameters more accurately.…”

Section: Introductionmentioning

confidence: 91%

Application of hybrid control algorithm on the vehicle active suspension system to reduce vibrations

Nguyen,

Iqbal,

Tran

et al. 2024

Advances in Mechanical Engineering

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This research proposes a hybrid control algorithm to enhance smoothness in a vehicle’s motion. The control signal is synthesized from two separate controllers, Proportional Integral Derivative (PID) and Sliding Mode Control (SMC), to achieve superior control performance. The novelty of the proposed control algorithm lies in using a double-loop algorithm to determine the controller parameters. The algorithm proposed in this research involves two computational processes to determine the model’s optimal values including the raw value and the acceptable value. The proposed control algorithm has been simulated considering three specific cases corresponding to the three types of road stimuli. The results demonstrate that the values of sprung mass displacement and acceleration dropped considerably with the application of the proposed algorithm. Moreover, the change in vertical force at the wheel is also reduced with the application of the algorithm particularly in the third case where the vertical force at the wheel has reached to zero. The average values of vehicle body displacement are found to be 166.17 mm (for passive case), 54.20 mm (for PID), and 42.52 mm (for SMC). The proposed control algorithm managed to reduce this value to 8.95 mm as evidenced by simulation results. Finally, the response of the control system when subjected to an excitation signal from the road surface further demonstrates efficacy of the proposed hybrid control algorithm.

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Section: Introductionmentioning

confidence: 91%

Application of hybrid control algorithm on the vehicle active suspension system to reduce vibrations

Nguyen,

Iqbal,

Tran

et al. 2024

Advances in Mechanical Engineering

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“…For cyclic oscillations, the values of displacement and acceleration are about 25.25% and 32.47%, respectively. For random oscillators, values of displacement and acceleration are about 43.37% and 73.23% respectively [71]. Kumar and Vijayarangan developed an active suspension for a passenger car in a quarter-car model using the conventional method (CM) and acceleration-dependent method (ADM).…”

Section: Linear Quadratic Regulator Control Systemmentioning

confidence: 99%

A Review on Various Control Strategies and Algorithms in Vehicle Suspension Systems

Ferhath,

Kamalakkannan Kasi

2023

Int. J. Automot. Mech. Eng.

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Automotive suspension systems provide passenger safety, ride comfort and vehicle handling in passenger and commercial vehicles. Through extensive research in the last couple of decades coupled with the recent advancements in technology, the improvement in vehicle handling and ride comfort have been significant by using various control strategies in semi-active and fully active suspension systems. Despite a significant number of articles available on the enhancement and improvement of vehicle suspension systems, there is certainly a lack of knowledge on various control strategies and algorithmic techniques used in the vehicle suspension system. Thereby, to address the gap, this review consecutively attempts to comprehensively explore the various research work conducted on the various control strategies used in vehicle suspension systems.

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“…where K r is the motor torque constant, i r is its winding 260 current, and c em,θ is a rotary electromagnetic damping co-261 efficient. Note that T r follows the active sign convention and 262 can be determined by a specific control strategy, such as sky-263 hook / ground-hook [23], linear quadratic regulator (LQR) 264 [24] or H ∞ [25]. In this work, to simplify the analysis, T r with inertial (J eq ) and viscous damping (c eq,θ ) contributions.…”

mentioning

confidence: 99%

A Hardware-in-the-Loop Approach to Test Rotary Electromagnetic Shock Absorbers

Tornabene,

Sorrentino,

Galluzzi

et al. 2024

IEEE Access

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Electromagnetic shock absorbers are mechatronic actuators designed to improve ride comfort and road holding in ground vehicles by introducing variable active and damping forces in the suspension. This feature difficults their testing, as the characterization test bench must adapt to this variable load feature. Moreover there is interest in testing them under realistic use scenarios. In this context, this work focuses on a hardware-in-the-loop implementation on a custom damper test bench to characterize rotary electromagnetic shock absorbers. First, the entire test bench is presented and described. The model of the plant is obtained together with a quarter car model of the target vehicle. Test bench bandwidth and instability issues are discussed. Then, a model following compensation method is proposed and simulated. Finally, the resulting approach is used to control a testbed, where the quarter car model is used to produce a realistic load duty cycle in real time. Experiments highlight the tracking performance of the test rig and its robustness against load variations.

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Optimizing the Parameter of the LQR Controller for Active Suspension System

Cited by 3 publications

References 22 publications

Application of hybrid control algorithm on the vehicle active suspension system to reduce vibrations

Application of hybrid control algorithm on the vehicle active suspension system to reduce vibrations

A Review on Various Control Strategies and Algorithms in Vehicle Suspension Systems

A Hardware-in-the-Loop Approach to Test Rotary Electromagnetic Shock Absorbers

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