Lecture 11 & 12 Quiz PDF

-​ Obsolescence is a loss of utility of a product which arrises not due to physical deterioration but other facts -​ Technical obsolescence: components become irreplaceable due to changes in tech over time (Replacement parts are no longer available) - Cause: Rapid technologica...

-​ Obsolescence is a loss of utility of a product which arrises not due to physical deterioration but other facts -​ Technical obsolescence: components become irreplaceable due to changes in tech over time (Replacement parts are no longer available) - Cause: Rapid technological advancements -​ To mitigate technical obsolescence: extend product lifespan with modular components (easy to upgrade), have backwards compatibility, policy interventions such as government laws on recycling -​ Example of technical obsolescence (Typewriter to word, vinyl to mp3) -​ Function/use obsolescence: owner’s needs have changed, current product may not satisfy their needs -​ Aesthetic/Style obsolescence: no longer popular fashion, looks outdated -​ Economic obsolescence: a more cost-efficient way to achieve a goal (beyond economic repair) -​ Legal obsolescence: Laws prohibit use (air conditioner) Lecture 12 -​ Revolute joints - rotation -​ Prismatic joints - linear -​ Forward kinematic - given joint variable and dimensions of links determine position -​ Inverse kinematics - given end positions and dimensions of links determine joint variable (solution is not unique) -​ Accident prevention - safeguard operators from machinery or automation failures -​ Protection of equipment - reduce damage and wear to expensive mechatronics systems ensuring smooth operation -​ Compliance with regulation - safer standards and legal requirements must be met to avoid fines and ensure safety -​ Enhanced productivity: safe environments lead to more efficient operations with fewer disruptions -​ There is an in-between between high risk and low cost and low risk and high cost -​ Common hazards in mechatronics include electric shocks, moving parts, and automation -​ Fail safes are important, make sure system stops when fail safe switch is released to ensure that it is always working -​ Fault tree analysis (FTA) explains that having more fails safes decreases probability of complete failure