1results about How to "Improve image capture quality" patented technology

The invention discloses an active and passive vibration damping device based on a piezoelectric actuator and a control method thereof, and aims to solve the problems that resonance is easy to occur and the vibration damping performance is obviously influenced by working conditions in the existing passive vibration damping method of a multi-rotor unmanned aerial vehicle, and the active vibration damping method is high in actuator stroke and energy consumption requirements, sensitive to system model errors and parameter drift and low in vibration damping performance. Therefore, the problem that the airborne camera of the multi-rotor unmanned aerial vehicle still has imaging blurring is solved. An upper platform of the device is connected with an unmanned aerial vehicle, the upper platform, a load platform, a piezoelectric actuator, a lower platform and airborne imaging equipment are coaxial from top to bottom, a spring assembly is connected with the upper platform and the lower platform, and the load platform penetrates through the lower platform through a plurality of connecting rods to be connected with connecting pieces of the airborne imaging equipment. And the multiple groups of spring assemblies and the multiple connecting rods are distributed around the piezoelectric actuator. According to the method, the piezoelectric actuator outputs reverse correction force according to the absolute acceleration of the device and the absolute acceleration of the load platform, and vibration reduction is achieved in combination with the spring assembly. The invention belongs to the technical field of vibration reduction.