Patent application number | Description | Published |
20110049290 | METHOD OF PILOTING A ROTARY-WING DRONE WITH AUTOMATIC STABILIZATION OF HOVERING FLIGHT - This method, applicable in particular to radio-controlled toys comprises the operations consisting in: fitting the drone with a telemeter and a video camera; acquiring the altitude of the drone relative to the ground by means of a telemeter; acquiring the horizontal speed of the drone; and automatically stabilizing the drone in hovering by: servo-controlling the vertical thrust force of the drone so as to stabilize the altitude acquired by the telemeter; and servo-controlling the horizontal thrust force of the drone so as to obtain zero horizontal speed. The video camera is a front-sight camera pointing towards the front of the drone; and the horizontal speed of the drone is acquired from a plurality of video images captured by said front-sight camera. | 03-03-2011 |
20120091260 | METHOD OF PILOTING A ROTARY WING DRONE HAVING MULTIPLE ROTORS - This method implements a transition from i) moving state in which the drone is flying at speed and tilt angle that are not zero to ii) hovering state in which the drone has speed and tilt angle that are both zero. The method comprises: a) measuring horizontal linear speed, tilt angles, and angular speeds at the initial instant; b) setting stopping time value; c) on the basis of initial measurements and set stopping time, parameterizing a predetermined predictive function that models optimum continuous decreasing variation of horizontal linear speed as a function of time; d) applying setpoint values to a loop for controlling motors of the drone, which values correspond to target horizontal linear speed precalculated from said parameterized predictive function; and e) once hovering state has been reached, activating a hovering flight control loop for maintaining drone at speed and tilt angle that are zero relative to the ground. | 04-19-2012 |
20120241555 | SUPPORT BLOCK FOR A MOTOR OF A ROTARY WING DRONE - The support block ( | 09-27-2012 |
20130006448 | METHOD OF DYNAMICALLY CONTROLLING THE ATTITUDE OF A DRONE IN ORDER TO EXECUTE A FLIP TYPE MANEUVER AUTOMATICALLY - This method controls the drone in order to flip through a complete turn about its roll axis or its pitching axis. It comprises the steps of: a) controlling its motors simultaneously so as to impart a prior upward vertical thrust impulse to the drone; b) applying different and non-servo-controlled commands to the motors so as to produce rotation of the drone about the axis of rotation of the flip, from an initial angular position to a predetermined intermediate angular position; and then c) applying individual control to the motors, servo-controlled to a reference target trajectory, so as to finish off the rotation of the drone through one complete turn about the axis of rotation, progressively from the intermediate angular position with a non-zero angular velocity to a final angular position with a zero angular velocity. | 01-03-2013 |
20130173088 | METHOD FOR THE INTUITIVE PILOTING OF A DRONE BY MEANS OF A REMOTE CONTROL - The user inclines the apparatus ( | 07-04-2013 |
20130176423 | METHOD FOR PILOTING A ROTARY WING DRONE FOR TAKING AN EXPOSURE THROUGH AN ONBOARD CAMERA WITH MINIMIZATION OF THE DISTURBING MOVEMENTS - The drone ( | 07-11-2013 |
20130325217 | ALTITUDE ESTIMATOR FOR A ROTARY-WING DRONE WITH MULTIPLE ROTORS - The drone comprises altitude determination means ( | 12-05-2013 |
20150057844 | METHOD FOR CONTROLLING A MULTI-ROTOR ROTARY-WING DRONE, WITH CROSS WIND AND ACCELEROMETER BIAS ESTIMATION AND COMPENSATION - The attitude and speed of the drone are controlled by angular commands applied to a control loop ( | 02-26-2015 |