4.1 Establishing functions

Sl. No.	Functions from User Perspective	Functions from Designer Perspective
1	Insert footwear comfortably	Detect object presence via sensors
2	Trigger cycle automatically	Convert electrical energy into mechanical energy
3	Remove loose surface dust	Regulate shaft angular velocity
4	Deliver controlled polish	Meter fluid/wax delivery systems
5	Spread polish evenly	Transmit torque across multiple brush shafts
6	Produce a uniform shine	Limit applied contact torque and pressure
7	Keep hands clean	Condition incoming electrical power and optimize execution timing
8	Operate safely without injury	Execute timed automated process sequence
9	Operate easily for first-time users	Capture airborne particulates and splatter
10	—	Accommodate geometric variability
11	—	Dissipate motor thermal load safely
12	—	Isolate mechanical vibrations and provide visual feedback
13	—	Enclose pinch points and revolving parts
14	—	Provide electrical grounding and acoustic/vibration insulation
15	—	Withstand solvent chemical attack
16	—	Support dynamic structural loads and modular reservoirs
17	—	Enable modular component replacement and easy access
18	—	Implement emergency power cut-off and lightweight chassis design
19	—	Optimize contact material hardness and minimize structural deflection
20	—	Implement zero-calibration autonomous control logic