Cable-Driven Parallel Manipulators and Control Systems
Summary
Cable-driven parallel manipulators (CDPMs) employ multiple flexible cables in place of rigid links to actuate a common end-effector. This architectural choice endows them with exceptionally large workspaces, high payload-to-weight ratios and reduced structural mass, making them attractive for applications from large-scale 3D printing and construction to rehabilitation robotics and precision motion platforms. Control of CDPMs must address cable tension management, nonlinear cable dynamics, underactuation and workspace singularities. Recent advances integrate optimisation methods for cable-attachment planning, model-based and data-driven tension estimation, and unified frameworks that couple kinematic redundancy resolution with real-time force distribution. Progress in semidefinite and gradient-based solvers has enabled adaptive reconfigurable platforms, while developments in rigid-flexible coupling theory and multi-mode input shaping are enhancing dynamic performance and mitigating undesirable oscillations. Together, these advances are accelerating the deployment of CDPMs in industry, civil engineering and biomedical environments, demonstrating their global significance and practical versatility.
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Recent work has introduced optimisation frameworks for reconfigurable CDPMs that determine cable-attachment locations to maximise tension factors and ensure wrench-feasibility across diverse workspace shapes. Semidefinite programming and multivariable gradient-based solvers have been employed to balance force distribution and minimise actuator loads in both low- and high-degree-of-freedom systems. A comprehensive review of CDPM theories and applications has summarised advances in configuration design, cable-force distribution algorithms, workspace and stiffness analysis, performance indices and control strategies. It highlights the need for rapid workspace calculation, unified control architectures and reliable cable materials to bridge theoretical models and real-world deployment. In the construction sector, a cable-driven parallel robot has been demonstrated for curtain-wall module installation, achieving sub-centimetre accuracy over workspaces exceeding 100 m² and reducing installation time by half. This system combines rapid inverse-kinematic computation with trajectory planning that accounts for cable sag and dynamic stiffness requirements, pointing to the maturity of CDPM solutions in large-scale automation.
Cable-Driven Parallel Manipulators and Control Systems publication trend
The graph below shows the total number of articles in cable-driven parallel manipulators and control systems across all publications each year (not limited to Nature Index journals).
Technical terms
Cable-Driven Parallel Manipulator (CDPM): A parallel robot in which the end-effector is actuated exclusively by cables under tension.
Workspace: The set of positions and orientations reachable by the end-effector under feasible cable tensions.
Wrench-Closure: A condition in which the cable arrangement can resist arbitrary external forces and moments at the end-effector.
Underactuation: A configuration where the number of independent control inputs is less than the degrees of freedom of the end-effector.
Reconfigurable Platform: A CDPM whose cable-attachment points or frame geometry can be altered to suit different tasks or obstacle environments.
Input Shaping: A trajectory-planning technique that filters motion commands to suppress natural oscillation modes.
References
- Cable Attachment Optimization for Reconfigurable Cable-Driven Parallel Robots Based on Various Workspace Conditions. IEEE Transactions on Robotics (2023).
- State-of-the-art on theories and applications of cable-driven parallel robots. Frontiers of Mechanical Engineering (2022).
- Indirect Force Control of a Cable-Driven Parallel Robot: Tension Estimation using Artificial Neural Network trained by Force Sensor Measurements. Sensors (2019).
- Cable-driven parallel robot for curtain wall module installation. Automation in Construction (2022).
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