Requirements & Challenges

1. Stringent Acceleration Requirements
   RoboVac motors demand high acceleration performance to deliver sufficient suction power within milliseconds.

2. Inertia-Induced Trailing Noise
   Requires ultra-fast braking to eliminate post-shutdown noise caused by motor inertia.

3. Current Overshoot & Estimation Errors
   Ultra-fast startups may cause current spikes and estimation deviations, triggering false protection.

4. Back-EMF Risks During Braking
   High-speed braking generates dangerous regenerative currents (from back-EMF), risking driver IC damage.

5. Startup Reliability

Solutions

1. Dual Closed-Loop Control (Current + Power)

   • Hardware-accelerated FOC estimator (5.6μs/computation) enables instant torque response.

   • Validated in RoboVac motor control systems.

2. Hybrid PWM Braking
   Combines modulated duty cycles and low-side FET braking for safe, rapid deceleration.

3. Fortior Tech's AO Observer

   • Parameter-agnostic design outperforms traditional SMO (Sliding Mode Observer).

   • Delivers unmatched startup robustness and cross-model compatibility.