Back to Search
Start Over
Pneumatic supply system parameter optimization for soft actuators
-
Abstract
- Soft actuators using pressurized air are being widely used due to their inherent compliance, conformability, and customizability. These actuators are powered and controlled by pneumatic supply systems (PSSs) consisting of components such as compressors, valves, tubing, and reservoirs. Regardless of the choice of actuator, the PSS critically affects overall performance of soft robots because it governs the soft actuator pressure dynamics, and thereby, the general dynamic behavior. While selecting and controlling PSS components for meeting desired soft actuator performance, specifications such as PSS mass, volume, and duration of operation must also be considered. Currently, there is no comprehensive study on PSS optimization for meeting dynamic performance and PSS specifications, due to limited understanding of soft actuator pressure dynamics, large solution space for PSSs, and variability in soft actuators. By considering critical parameters of PSS and soft actuators, we introduce and demonstrate PSS parameter optimization. We propose a normalized model for soft actuator pressure dynamics and quantify the relationship between PSS parameters, soft actuator design parameters, and dynamic performance metrics of rise time, fall time, and actuation frequency. After experimental validation, we applied these results and optimally select and control PSS components to meet desired soft actuator performance for a soft exosuit, while minimizing mass of selected components. The measured pressure response with this prototype agrees well with simulations, with root mean square errors
- Subjects :
- 0209 industrial biotechnology
Computer science
Compressed air
Computer Science::Neural and Evolutionary Computation
Biophysics
Powered exoskeleton
Soft robotics
02 engineering and technology
Computer Science::Robotics
020901 industrial engineering & automation
Fall time
Artificial Intelligence
Control theory
pneumatic systems
Compressed Air
Soft pneumatic actuators
soft robots
Equipment Design
Robotics
021001 nanoscience & nanotechnology
Condensed Matter::Soft Condensed Matter
portability
Control and Systems Engineering
Rise time
Robot
0210 nano-technology
Actuator
pressure dynamics
Gas compressor
Subjects
Details
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....92fecacc059c07fa72fb30b977138147