... surgeries. The current limitation of robot-assisted femur fracture surgery is the lack of large force generation and sufficient workspace size in traditional mechanisms. To address these challenges, our group has created a 3- R R P S parallel mechanism, Robossis, which maintains the strength of parallel...

... for publication in the J ournal of M echanisms and R obotics . 25 02 2022 13 06 2023 16 06 2023 20 07 2023 microsurgical instruments six-degree-of-freedom parallel mechanism kinematic pseudo-rigid rigid-flexible coupling National Natural Science Foundation of China...

... of the parallel mechanism (PM). In order to solve this problem, this paper proposes an inverse Jacobian matrix construction method based on performance indices. The method is realized by constructing singular values and singular vectors directly related to the performance indices. Furthermore, based on the screw...

...Ju Li; Hongbo He; Guanglei Wu; Tao Li; Huiping Shen This paper presents the design and analysis of a family of full-hinged partially-decoupled novel parallel mechanisms (PMs) featuring one/two translation(s) and one rotation (1T1R/2T1R). First, three 2DOF 1T1R and one 3DOF 2T1R novel spatial PMs...

...Bo Hu; Zhiyong Liu; Jinjun Zhao; Jingyu Zhao; Jiantao Yao The existing displacement of parallel + serial type hybrid mechanisms is mainly solved by the equivalent serial mechanism (SM) method. However, a large number of lower mobility parallel mechanisms (PMs) that have high coupled motions...

... Committee of ASME for publication in the J ournal of M echanisms and R obotics . 2 Supplementary video for this paper can be found at: https://youtu.be/UH_Kb8JFfAk 01 07 2022 08 11 2022 11 11 2022 03 03 2023 reconfigurable machine parallel mechanism 3-DOF...

... the spherical-linkage parallel mechanism (SLPM) as a flexure hinge. The analysis suggests that the SLPM is highly flexible and meets the requirements for many DoFs (degrees-of-freedom) needed in various fields. The folding ratio of the SLPM was 72.73. Following this, we present an SLPM compliant module powered...

...Xianwen Kong A 3-degree-of-freedom (DOF) 3-UPU translational parallel mechanism (TPM) is one of the typical TPMs. Despite comprehensive studies on 3-UPU TPMs in which the joint axes on the base and the moving platform are coplanar, only a few 3-UPU TPMs with skewed base and moving platform have...

...Jingke Song; Chen Zhao; Kun Zhao; Wenjiang Yan; Ziming Chen In this paper, a symmetric 3-UPU (U and P represent universal and prismatic joints, individually) parallel mechanism and its variant mechanism under different geometric and assembly conditions are analyzed. Both have two rotational and one...

... the demand of high-speed sorting tasks because of the advantages of low inertia and excellent dynamic characteristics [ 1 ]. The Delta configuration proposed by Clavel in 1985 [ 2 ] is a classical parallel mechanism and has been well developed, as shown in Fig. 1( a ) . Fig. 1 ( a ) Delta and ( b...

...Peng Xu; Chi Fai Cheung; Bing Li; Chunjin Wang; Chenyang Zhao In this paper, a novel six degrees-of-freedom (DOF) hybrid kinematic machine (HKM) is designed, analyzed, and evaluated for precision polishing. The design adopts a 3-DOF tripod-based parallel mechanism (PM) to locate the workpiece, a 2...

...Hengchun Cui; Jun Wu; Qi Li This paper proposes a novel two-axis solar tracker with a redundant parallel mechanism and investigates the distribution method of driving torque. In view of the difference between the singular configuration of the redundant parallel mechanisms...

... legged mobile lander type synthesis truss-mechanism transformation parallel mechanism multi-loop chain In the exoplanet exploration project, the mission mainly includes Circling , Landing , Return three missions and Base Construction in the future [ 1 ]. So far, the Circling and Landing...

... alternatives to planar parallelograms and are also associated with self-motion of several translational parallel mechanisms. 6RMCTs are to be obtained using a construction approach in combination with the approaches to the type synthesis of parallel mechanisms. By imposing certain conditions on the hybrid...

... of a number of three-legged parallel manipulators. parallel mechanism screw theory singularity reciprocal screws Singularity analysis [ 1–4 ] is an important issue in the context of design and control of PMs. One type of singularity is called static singularity [ 2 ], 3 in which the moving...

... online July 16, 2013. Assoc. Editor: J. M. Selig. 27 07 2012 20 04 2013 In this paper, we present the design of a novel 3- R US/ R RR redundantly actuated parallel mechanism for ankle rehabilitation based on the principle from the conceptual design. The proposed mechanism can...

...Dongming Gan; Jian S. Dai; Jorge Dias; Lakmal Seneviratne The 4(rT) 2 PS metamorphic parallel mechanism consisting of four (rT) 2 PS limbs is shown in Fig. 2 , in which the four limbs are arranged symmetrically on a circle with radius r a on the platform and a circle with radius r b...

...Ting-Li Yang; Dong-Jin Sun Based on the position and orientation characteristic (POC) set and the POC equations for serial mechanisms and parallel mechanisms proposed by authors, this paper presents a novel general degree of freedom (DOF) formula which is totally different from approaches based...

... visual servoing parallel mechanism joint miniaturization Spherical joints have become an integral component in robotic applications, often comprising both the wrist and the shoulder of robotic manipulators. As a result, 3 degree of freedom (DOF) joints have been studied extensively...

... International Workshop on Fundamental Issues and Future Research Directions for Parallel Mechanisms and Manipulators , Montpellier, France, Sept. 21– 22, pp. 31 – 39 . Kong , X. , and Gosselin , C. M. , 2010 , “ A Formula That Produces a Unique Solution to the Forward Displacement Analysis...