Abstract
The integration of advanced robotics, precision actuation, and automated control systems into modern manufacturing highlights a vital connection between technical capability and sociotechnical consequences. As engineering design continuously expands the boundaries of machine autonomy, mechanical systems are increasingly tasked with replicating subtle, delicate human actions. My interest in this sociotechnical dynamic stems directly from my hands-on experience building a four-degree-of-freedom handwriting robot. Crafting a machine capable of replicating handwriting, something seen as a very “human” thing, made me ask: As robots master tasks once considered uniquely human, where does this replication end, and are all human workers ultimately replaceable? This question shows why STS perspectives are important to engineering practice. Engineers must evaluate not only what a system can accomplish, but how its deployment alters human labor, organizational structures, and societal well-being.
The technical portion of my capstone project focuses on designing, fabricating, and evaluating a four-degree-of-freedom (DOF) robotic arm engineered specifically for high-precision handwriting. The physical architecture features three “elbow” joints, a rotating base, and a dedicated gripper mechanism for pen orientation. To eliminate mechanical backlash—which introduces error during delicate, slow pen strokes—each rotational joint utilizes custom cycloidal speed reducers. Actuation is driven by servo motors integrated with absolute encoders, establishing closed-loop position control and real-time path execution via an onboard microcontroller running inverse kinematics algorithms. The outcome of this technical effort is a physical prototype capable of producing legible, repeatable handwritten text, demonstrating that low-backlash cycloidal gearing combined with closed-loop feedback allows relatively low-cost robotic systems to execute fine-motor tasks.
In my STS research, I examine the sociotechnical impacts of manufacturing automation and robotics on the industrial workforce, focusing on labor polarization, deskilling, and psychological strain. Using a systematic literature and data review across labor economics and industrial psychology, the study analyzes the structural transition from manual execution to digital oversight. The results reveal that while automation increases production output, it hollows out mid-skill industrial roles, creating a "barbell" labor market split between low-wage service jobs and high-wage engineering positions. Furthermore, the findings demonstrate that transitioning workers from active physical creation to passive screen monitoring induces a decrease in job satisfaction. Ultimately, the research identifies that mitigating these negative impacts requires organizations to integrate proactive upskilling programs directly into the deployment phase of new technologies.
Reflecting on these two projects through an STS lens shows the necessity of analyzing technical, organizational, and cultural elements simultaneously to uphold ethical engineering responsibility. STS frameworks force recognition of the broader sociotechnical problem: technology does not operate in a vacuum, but within complex human networks. By examining how fine-motor robotics threatens the current labor market, engineers can anticipate friction before implementation. Considering technical parameters alongside workforce culture and organizational incentives allows engineers to design systems that augment human capability rather than treat labor as an obsolete expense, ensuring that innovation ultimately aligns with ethical, human-centered values.
