Common faults in agricultural drones primarily occur in four core modules: the power system, flight control system, spraying system, and battery system, as detailed below: • Power system failure: The most common issues are motor stalling or abnormal rotation speed, often caused by motor dust/water ingress, carbon brush wear (in traditional motors), or loose/loose propeller installation or breakage. Additionally, ESC (Electronic Speed Controller) overheating or burnout is also frequent, typically triggered by excessive load (such as overweight spraying) or circuit short circuits. 
• Flight Control and Positioning Failure: Manifests as drone drift, inability to hover, or significant positioning deviation, often due to GPS signal obstruction (e.g., trees, high-voltage power lines), GNSS module malfunction, or magnetic compass interference (e.g., metal components of pesticide containers). In extreme cases, it may trigger a “loss of control and return home” failure. • Spraying System Malfunction: Common issues include nozzle blockage (due to unfiltered pesticides or crystallized residues), pump failure (caused by foreign object jamming or poor electrical contact), or tank leakage (resulting from aged sealing gaskets or physical damage to the tank), leading directly to uneven spraying or complete cessation. 
• Battery system failure: Manifests as sudden range reduction, incomplete charging, or unexpected power loss during flight. Common causes include overcharging/over-discharging, swollen battery cells (due to prolonged high-temperature operation), and poor contact from oxidized connectors. In severe cases, it may lead to battery fires.
Post time: Nov-07-2025