High-speed dynamic derivative test mechanism and working principle thereof

The invention discloses a high-speed dynamic derivative test mechanism and a working principle thereof, and belongs to the technical field of aviation aerodynamic wind tunnel special tests. The device comprises a driving motor, an eccentric cam, a sliding groove block, a sliding groove track, a conversion lever, a rotary driving shaft and a model supporting rod, the driving motor is provided with the eccentric cam, the sliding groove track is installed in a supporting sleeve, the sliding groove track is in sliding fit with the sliding groove block, the eccentric cam is in sliding fit with the sliding groove block, and the conversion lever is rotationally connected with the supporting sleeve. The conversion lever is connected with the sliding groove block, the rotary driving shaft is connected with the end of the conversion lever, and the angle balance and the force measuring balance are installed on the rotary driving shaft. The invention aims to solve the problems that the eccentric distance is too small, th