Towards Embodied Intelligence: Novel Kinematic Structures and AI-Guided Mechanism Design

A special issue of Machines (ISSN 2075-1702). This special issue belongs to the section "Machine Design and Theory".

Deadline for manuscript submissions: 30 September 2026 | Viewed by 1406

Special Issue Editors

School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China
Interests: space robot; computer vision; motion planning; humanoid robot

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Guest Editor
School of Mechanical Engineering, Shandong University, Jinan 250061, China
Interests: embodied AI; robotic dexterous manipulation; robot learning; humanoid robots; intelligent computing

Special Issue Information

Dear Colleagues,

The kinematic configuration—the fundamental arrangement of joints, links, and motion primitives—forms the structural backbone of a robot, defining its workspace, dexterity, stiffness, and dynamic capabilities. As robotics progresses toward embodied intelligence, the interplay between physical morphology, control, and learning has become increasingly significant. In this context, innovative kinematic structures not only enable specialized functions but also shape how robots perceive, interact, and adapt within real-world environments.

Recent advances in parallel mechanisms, reconfigurable robots, modular manipulators, and soft robotic architectures have highlighted the essential role of structural innovation in achieving high performance across diverse tasks—from high-speed pick-and-place operations to precision-critical manipulation. Designing such configurations, however, requires addressing longstanding challenges, including singularity avoidance, workspace expansion, dynamic feasibility, and the balance between mobility and structural stability.

Emerging AI-guided approaches, such as data-driven optimization, generative mechanism synthesis, and computational design automation, are opening new possibilities for exploring vast design spaces and discovering high-performing architectures that would be difficult to obtain through traditional methods.

This Special Issue seeks to gather state-of-the-art research on kinematic design principles, mechanism innovation, and AI-enabled methodologies that advance the development of embodied and intelligent robotic systems. We invite original contributions that explore novel architectures, integrate AI into the design process, or provide new theoretical and application-driven insights into robotic kinematics. Topics of interest include, but are not limited to, the following:

  • AI-guided synthesis and optimization of serial, parallel, and hybrid manipulators;
  • Task-oriented, learning-oriented, and performance-based kinematic design;
  • Embodied intelligence-driven morphological and kinematic co-design;
  • Reconfigurable robots, modular structures, and variable topology mechanisms;
  • Bio-inspired, soft robotic, and compliant mechanism architectures;
  • Integration of kinematic design with control, perception, and trajectory learning;
  • Generative models, computational geometry, and AI-driven mechanism synthesis;

Dr. Yang Liu
Dr. Zhiyuan Zhao
Guest Editors

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Keywords

  • robotics
  • embodied intelligence
  • kinematic design
  • mechanism synthesis
  • AI-guided optimization
  • robot dynamics
  • configuration innovation
  • computational design
  • morphology & control co-design

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Published Papers (2 papers)

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Research

29 pages, 18042 KB  
Article
Design and Modelling of a Two-Axis Compliant Joint Based on Flexure Leaf Springs
by Kuncheng Feng, Hasiaoqier Han, Changzheng Chen, Jiaxin Li, Haifei Hu, Kai Zhang and Zhenbang Xu
Machines 2026, 14(3), 313; https://doi.org/10.3390/machines14030313 - 10 Mar 2026
Viewed by 540
Abstract
In the field of parallel robots, traditional rigid joints compromise motion accuracy owing to inherent friction and backlash, thus driving the demand for high-performance compliant joints. This paper proposes a parametric design method for a two-axis compliant joint that employs flexure leaf springs [...] Read more.
In the field of parallel robots, traditional rigid joints compromise motion accuracy owing to inherent friction and backlash, thus driving the demand for high-performance compliant joints. This paper proposes a parametric design method for a two-axis compliant joint that employs flexure leaf springs (FLSs) as rigid joint alternatives. The joint configuration consists of four FLSs arranged in a revolute–revolute (RR) layout. Based on Euler–Bernoulli beam theory and the deformation superposition principle, linear analytical models for the compliance and stress characteristics of both the flexure leaf spring (FLS) and the compliant joint are derived. These models are validated through finite element analysis (FEA) and rotational motion experiments. The results indicate that the relative errors between the analytical model (AM) and finite element model (FEM) are below 8%, while the relative errors between the AM and experimental data are within 12%. The proposed parametric design method enables rapid preliminary design and the performance evaluation of the two-axis compliant joint, which is intended as a rotational joint for six degrees of freedom (6-DOF) parallel robots with typical applications in high-precision optical alignment. Full article
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22 pages, 5335 KB  
Article
Inverse Kinematics of China Space Station Experimental Module Manipulator
by Yang Liu, Haibo Gao, Yuxiang Zhao, Shuo Zhang, Yuteng Xie, Yifan Yang, Yonglong Zhang, Mengfei Li, Zhiduo Jiang and Zongwu Xie
Machines 2026, 14(3), 284; https://doi.org/10.3390/machines14030284 - 3 Mar 2026
Viewed by 496
Abstract
SSRMS refers to a Space Station Remote Manipulator System. The robotic arm of the Wentian module can complete tasks such as supporting astronauts’ extravehicular activities, installing and maintaining payloads, and inspecting the space station. The seven-joint SSRMS manipulator is critical for space missions. [...] Read more.
SSRMS refers to a Space Station Remote Manipulator System. The robotic arm of the Wentian module can complete tasks such as supporting astronauts’ extravehicular activities, installing and maintaining payloads, and inspecting the space station. The seven-joint SSRMS manipulator is critical for space missions. This study aims to build its kinematic model via screw theory. It simplifies SSRMS to right-angle rods, defines joint screw axes, twist coordinates, and initial pose matrix. Using the PoE (Product of Exponentials) formula, the 7-DOF forward kinematics equation is derived. In addition, it derives fixed joint angle for inverse kinematics, including analytical solutions and numerical solutions. It elaborates analytical solutions for fixing joints 1/7 and 2/6 and numerical solutions for fixing joints 3/4/5, solves all joint angles via kinematic decoupling, and addresses special cases. Experiments with China’s space station small arm parameters show the probability of meeting the accuracy threshold 104 is 99.79%, verifying model effectiveness, while noting singularity-related weak solving areas. This provides a reliable basis for subsequent inverse kinematics optimization. Full article
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