What component ensures smooth starts and stops in lifts?

• A. Platform Components
• B. Solid State Controllers
• C. Noise Sources
• D. Self-Diagnostic System

Answer: (B)

Smooth starts and stops come from how the drive system controls motor torque during acceleration and deceleration. The component that handles this is the solid state controller, which uses electronic switching to regulate power to the motor. By modulating voltage and current, it creates a gradual ramp‑up at start and a controlled ramp‑down at stop, giving a soft, passenger-friendly transition instead of a jolt. This also helps reduce mechanical wear and protects the system from electrical stress.

Other options don’t directly manage how power is delivered to the motor. Platform components relate to the cabin area, noise sources don’t control drive torque, and a self-diagnostic system monitors faults rather than actively smoothing motion.