Temperature and Humidity PID Controller for a Bioprinter Atmospheric Enclosure System.

Area of Science:

• Biotechnology
• Bioengineering
• Materials Science

Background:

• Bioprinting success relies on precise control of bioink properties and environmental factors like temperature and humidity.
• Current bioprinters often lack control over external environmental parameters, impacting cellular viability and structural accuracy.
• Maintaining consistent conditions is vital for the stability and integrity of 3D bioprinted constructs.

Purpose of the Study:

• To develop and validate a novel atmospheric enclosure system for precise control of temperature and humidity during 3D bioprinting.
• To implement a decoupled proportional integral derivative (PID) controller for managing the enclosure's environmental parameters.
• To assess the system's ability to maintain optimal conditions for enhanced cell viability and construct integrity.

Main Methods:

• Design and simulation of a decoupled PID controller for temperature and humidity regulation.
• Experimental testing and validation of the PID controller within the atmospheric enclosure system.
• Monitoring and analysis of stabilization times and average error rates for temperature and humidity control.

Main Results:

• The PID controller successfully stabilized the atmospheric enclosure system's temperature in 311 seconds and humidity in 65 seconds.
• Achieved average error rates of 1.89% for temperature and 1.30% for humidity.
• The system demonstrated its capability to reach and maintain required environmental parameters for bioprinting.

Conclusions:

• The developed atmospheric enclosure system effectively controls temperature and humidity, crucial for 3D bioprinting.
• The PID controller ensures stability and accuracy, promoting cell viability and structural integrity of bioprinted tissues.
• This system provides a stable pre-incubation environment, advancing the field of tissue engineering and regenerative medicine.