Final answer:
The three layers of control associated with an elevator system are acceleration control, velocity control, and deceleration control.
Step-by-step explanation:
The three layers of control associated with an elevator system are:
- Acceleration control: The elevator must accelerate upward or downward when it starts moving in order to gain speed.
- Velocity control: Once the elevator is in motion, it should maintain a constant velocity while moving upward or downward.
- Deceleration control: When the elevator approaches the desired floor or reaches its destination, it must decelerate to come to a stop smoothly.