Structural Vibration Suppression Using a Reduced-Order Extended State Observer-Based Nonsingular Terminal Sliding Mode Controller with an Inertial Actuator

Zhai, Juan; Li, Shengquan; Tan, Gongli; Li, Juan; Zhang, Xu; Zhang, Luyao

doi:10.3390/machines11010001

Cited by 2 publications

(1 citation statement)

References 44 publications

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“…In reference [ 27 ], a bicyclic ADRC with position-velocity parameters that can be self-adaption is proposed for mechanical arm joints and applied to SCARA. Reference [ 28 ] enhances the system’s vibration suppression capabilities by designing a reduced-order extended state observer (RESO), while reference [ 29 ] addresses issues such as uncertain disturbances in flexible-joint manipulators (FJMs). Based on the RESO, a novel composite control method is devised, significantly improving the tracking performance.…”

Section: Introductionmentioning

confidence: 99%

Composite ADRC Speed Control Method Based on LTDRO Feedforward Compensation

Jin,

Wang,

et al. 2024

Sensors

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The performance of the extended state observer (ESO) in an Active Disturbance Rejection Control (ADRC) is limited by the operational load in stepper motor control, which has high real-time requirements and may cause delays. Additionally, the complexity of parameter tuning, especially in high-order systems, further limits the ESO’s performance. This paper proposes a composite ADRC (LTDRO-ADRC) based on a load torque dimensionality reduction observer (LTDRO). Firstly, the LTDRO is designed to estimate abrupt load disturbances that are difficult to compensate for using the ESO. Secondly, the transfer function under the double-closed loop is deduced. Additionally, the LTDRO uses a magnetic encoder to gather the system state and calculate the load torque. It then outputs a compensating current feedforward to the current loop input. This method reduces the delay and complexity of the ESO, improving the response speed of the ADRC speed ring and the overall response of the system to load changes. Simulation and experimental results demonstrate that it significantly enhances dynamic control performance and steady-state errors. LTDRO-ADRC can stabilize the speed again within 49 ms and 17 ms, respectively, in the face of sudden load increase and sudden load removal. At the same time, in terms of steady-state error, compared with ADRC and CADRC, they have increased by 94% and 88%, respectively. In terms of zero-speed starting motors, the response speed is increased by 58% compared to a traditional ADRC.

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Section: Introductionmentioning

confidence: 99%

Composite ADRC Speed Control Method Based on LTDRO Feedforward Compensation

Jin,

Wang,

et al. 2024

Sensors

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Virtual Dynamic Vibration Absorber Trap Fusion Active Vibration Suppression Algorithm Based on Inertial Actuators for Large Flexible Space Trusses

Qin,

Xu,

et al. 2024

Aerospace

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This paper presents a virtual dynamic vibration absorber (DVA) trap fusion active vibration suppression algorithm based on inertial actuators as a solution to the harmonic vibration control problem of large flexible space trusses. Firstly, the mechanism of the inertial actuator is analyzed, and the relationship between the bandwidth of the algorithm and the intrinsic frequency of the inertial actuator is derived. Secondly, a dynamic model of the space truss is constructed. Subsequently, an analysis is conducted to determine the manner in which the virtual DVA exerts influence on the system’s dynamic characteristics. Based on this analysis, a virtual DVA trap fusion active vibration suppression algorithm is designed. Finally, the efficacy of the proposed algorithm in suppressing vibration is demonstrated through experimentation. The algorithm was demonstrated to be effective in suppressing both single-frequency harmonic vibration and multi-frequency harmonic vibration under the working conditions of single-degree-of-freedom and multi-degree-of-freedom of a flexible truss. The vibration suppression efficiency was found to be greater than 60%. It is therefore evident that the proposed algorithm has the potential to be applied to the vibration suppression of telescopes assembled in orbit in the future.

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Structural Vibration Suppression Using a Reduced-Order Extended State Observer-Based Nonsingular Terminal Sliding Mode Controller with an Inertial Actuator

Cited by 2 publications

References 44 publications

Composite ADRC Speed Control Method Based on LTDRO Feedforward Compensation

Composite ADRC Speed Control Method Based on LTDRO Feedforward Compensation

Virtual Dynamic Vibration Absorber Trap Fusion Active Vibration Suppression Algorithm Based on Inertial Actuators for Large Flexible Space Trusses

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