| 摘要 |
<p>A resonance engine is disclosed comprising: a driver plate (12), to which is coupled at least one oscillatory transducer (14); a drive signal generator connected to the oscillatory transducer for excitation thereof; a first spring-mass resonator, having a first natural resonant frequency, with a proximal end attached to the driver plate (12) and a free distal end; and a reaction means attached to the driver plate substantially opposite to the first spring-mass resonator. When the oscillatory transducer (14) is excited by a drive signal from the generator having a component at or close to said natural resonant frequency, the first spring-mass resonator oscillates at resonance, substantially in anti-phase to the driver plate (12). Small vibrational strains in the oscillatory transducer (14) are converted to large strains of controllable kinematic movements. The resonance engine has particular application for nano air vehicles (10-10f), wherein at least one spring-mass resonator is fitted with a wing (RD, LD) capable of producing thrust by flapping in an insect like kinematic manner suitable for flight. Where additional spring-mass resonators are added to the engine, each may be fitted with a wing. Each different spring-mass resonator may be tuned to have a different natural resonant frequency (when measured in isolation), whereby flight may be controlled by adjusting the drive signal; at particular drive frequencies, certain of the resonators may resonate in preference to others, thereby increasing lift from the associated wings, and controlling flight. The wings may face in opposite directions in order to produce rotational flight. Further closely tuned spring-mass resonators that are tuned on a substantially different frequency band to the wing resonators can be added as legs for independently controllable terrestrial or aerial locomotion.</p> |
