Intrinsic embedded sensors for polymeric mechatronics: flexure and force sensing.

Area of Science:

• Robotics and Mechatronics
• Polymer Science and Engineering
• Sensor Technology

Background:

• Polymeric fabrication, including additive manufacturing, offers advanced capabilities for creating complex structures.
• Effective integration of sensing elements within polymeric systems remains a significant challenge.
• Existing sensing solutions are often not compatible with or easily embedded into polymer-based mechanisms.

Purpose of the Study:

• To develop and evaluate novel sensing modalities for seamless integration into polymeric mechatronic and robotic systems.
• To demonstrate the feasibility of embedding multi-axis flexure joint angle sensors and three-axis force sensors within polymer structures.
• To provide a foundation for creating more intelligent and responsive polymer-based robots and mechatronic devices.

Main Methods:

• Development of multi-axis joint angle sensing using infrared (IR) phototransistors.
• Implementation of a compact (12 mm) three-axis force sensing system utilizing embedded silicon strain gauges.
• Evaluation of sensor performance and compatibility with polymeric fabrication processes.

Main Results:

• Successful development and integration of IR phototransistor-based joint angle sensors.
• Demonstration of a small-footprint, three-axis force sensor with performance comparable to metal-based sensors.
• Validation of the effectiveness of embedded silicon strain gauges for force measurement in polymeric structures.

Conclusions:

• The developed sensing modalities are effective for embedding within polymeric mechatronic and robotic mechanisms.
• These embedded sensors enable enhanced functionality and data acquisition in polymer-based systems.
• This work paves the way for advanced, integrated sensing in next-generation polymeric robotics.