Velocity and Force Transfer Performance Analysis of a Parallel Hip Assistive Mechanism

Li, Jianfeng; Zhang, Leiyu; Dong, Mingjie; Zuo, Shuguang; He, Yandong; Zhang, Pengfei

doi:10.1017/s0263574719001802

Cited by 6 publications

(2 citation statements)

References 30 publications

(35 reference statements)

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“…Jiang et al, 8 Lu et al, 9 Liu 10 and Liu 11 designed a V -shaped TBM that can achieve a small turning radius based on the stewart platform, and concluded that the V -type TBM has good geological adaptability and efficient mechanized construction. Wang et al, 12 Yuan 13 and Li et al 14 proposed that the smaller the turning radius of TBM small curve, the greater the amount of correction, the lower the correction accuracy, and checked the factors affecting the construction of small curve. Yu et al, 15 Tian et al 16 analyzed the kinematic coupling degree and force transfer performance of V -type and Π-type TBM and the force transfer performance of the propulsion system, and concluded that V -type TBM was better than Π-type TBM.…”

Section: Introductionmentioning

confidence: 99%

Comparative analysis of adaptability of open TBM small curve turning radius

Lijie,

Xiaoyong,

Liying

et al. 2024

Proceedings of the Institution of Mechanical Engineers, Part C:

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Aiming at the problems of difficult operation and low excavation accuracy of open TBM in the process of small curve cornering, the structural mechanism, and motion characteristics of the traditional Horizontal main beam type TBM and the new 8-SPS V-type TBM mainframe were compared and studied. Based on the drainage channel project of a pumped storage power station, the factors affecting the minimum turning radius of TBM were analyzed by establishing two TBM main engine turning direction models. Secondly, the design of two open TBM mainframes with a diameter of ϕ3530 mm is improved. Finally, the relationship between the displacement and velocity change between the cutterhead and the propulsion cylinder under the straight-line boring condition and the small curve turning boring condition of TBM was analyzed by ADAMS software. The results show that when the tunnel design axis has a large turning radius and is dominated by straight segments, the TBM propulsion system with horizontal main beam type has higher excavation efficiency. The 8-SPS V-type TBM cutterhead attitude change is more flexible, which is more suitable for complex and changeable small curve corner boring. Moreover, the 8-SPS propulsion system is symmetrical, and the speed of each cylinder changes more gently during the turning process, the cylinder attitude of TBM is easy to control during the small curve turning and propulsion, the boring accuracy is higher, and the propulsion system compliance is better.

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Section: Introductionmentioning

confidence: 99%

Comparative analysis of adaptability of open TBM small curve turning radius

Lijie,

Xiaoyong,

Liying

et al. 2024

Proceedings of the Institution of Mechanical Engineers, Part C:

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show abstract

“…Performance evaluation for the parallel mechanism is a significant issue in real industrial application [17]; thus, some indices have been proposed to evaluate the workspace [18][19][20], stiffness [21], and other aspects [22][23][24] of the mechanism. In this case, the performance analysis of reconfigurable parallel mechanisms has also gained interests.…”

Section: Introductionmentioning

confidence: 99%

Neural Network and Performance Analysis for a Novel Reconfigurable Parallel Manipulator Based on the Spatial Multiloop Overconstrained Mechanism

Huang

Zhang

Zou

2020

International Journal of Aerospace Engineering

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To meet the different requirements in the industrial area, a novel reconfigurable parallel mechanism is proposed based on the spatial multiloop overconstrained mechanism. The configurations can be changed by driving the low-DOF (degree-of-freedom) overconstrained mechanism. The mobility of this mechanism is investigated. And the kinematic model and Jacobian matrix are both established. Based on the Jacobian matrix, the workspace, stiffness, and conditional number are all analyzed. To focus on the application in the industrial area, this paper proposes a method to establish the relationship between the performance and the structural parameters by using the modified BP neural network. Based on this method, the structural parameters can be chosen by the requirements of the special task in the industrial area. Finally, some numerical examples are presented to verify the method.

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Motion Types of 2-DOF Hybrid Kinematic Chains

Antonov

2024

Advances in Robot Kinematics 2024

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Velocity and Force Transfer Performance Analysis of a Parallel Hip Assistive Mechanism

Cited by 6 publications

References 30 publications

Comparative analysis of adaptability of open TBM small curve turning radius

Comparative analysis of adaptability of open TBM small curve turning radius

Neural Network and Performance Analysis for a Novel Reconfigurable Parallel Manipulator Based on the Spatial Multiloop Overconstrained Mechanism

Motion Types of 2-DOF Hybrid Kinematic Chains

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