Force generator for mounting on a structure

Force generator according to one of the preceding claims, characterized in that the spring arm (14) has a longitudinal section with a rectangular or tapered shape.

Force generator for mounting on a structure (12) in order to introduce vibrational forces into the structure in a controllable manner for influencing vibration, comprising at least one spring arm (14) having a fixed end (16) for fastening to the structure (12), and having a vibrating end (18) to which an inertial mass (24) is fastened via a bending arm (22) extending in the direction of the fixed end (16), at least one piezoelectric transducer (26) being mounted on the spring arm (14) for the bending deformation thereof, characterized in that at least one piezoelectric transducer (26) is mounted at both ends (16, 18) of the spring arm (14), two guide springs (40) being situated on both sides of the spring arm (14), parallel thereto, one end of each guide spring likewise being fastened to the structure (12), and the second end of each guide spring, together with the vibrating end of the spring arm (14), being fixedly mounted on a connecting part (42), the bending arm (22) being mounted on the connecting part (42).

Force generator for mounting on a structure (12) in order to introduce vibrational forces into the structure in a controllable manner for influencing vibration, comprising at least one spring arm (14) having a fixed end (16) for fastening to the structure (12), and having a vibrating end (18) to which an inertial mass (24) is fastened via a bending arm (22) extending in the direction of the fixed end (16), at least one piezoelectric transducer (26) being mounted on the spring arm (14) for the bending deformation thereof, characterized in that at least one piezoelectric transducer (26) is mounted on both ends (16, 18) of the spring arm (14), at least two spring arms (14a, 14b) of the same type provided with piezoelectric transducers being provided parallel to one another, the fixed ends of the spring arms being fastened to the structure (12), and the vibrating ends of the spring arms being fixedly connected to one another via a connecting part (42), the bending arm (22) being mounted on the connecting part.

Force generator according to one of the two preceding claims, characterized in that the length of the bending arm (14) is such that the distance of the center of gravity of the inertial mass (24) from the fixed end (16) is less than 20% of the length of the spring arm (14).

Force generator for mounting on a structure (12) in order to introduce vibrational forces into the structure in a controllable manner for influencing vibration, at least one spring arm (14) having a fixed end (61) for fastening to the structure (12), and having a vibrating end which is coupled to an inertial mass (24), at least one piezoelectric transducer (62) contacting the spring arm (14) for the bending deformation thereof, at least one lever arm (60) being provided on the spring arm (14) in the area of the fixed end (61), and a piezoelectric transducer (62) being supported at one end on the structure (12a), and at its second end being supported on the lever arm (60) for bending the spring arm (14), characterized in that two lever arms (60a, 60b) extending in opposite directions are mounted on the spring arm (14), and a piezoelectric transducer (62a, 62b) is supported on each of the lever arms (60a, 60b), and the respective second end of the lever arms (60a, 60b) is supported on the structure (12a).

Force generator according to one of the preceding claims, characterized in that the inertial mass (24) and/or the bending arm (22) together with the inertial mass (24) is/are exchangeable.

Force generator for mounting on a structure (12)) in order to introduce vibrational forces into the structure in a controllable manner for influencing vibration, comprising at least one spring arm (14) having a fixed end (61) for fastening to the structure (12), and having a vibrating end which is coupled to an inertial mass (24), at least one piezoelectric transducer (62) contacting the spring arm (14) for the bending deformation thereof, characterized in that three mutually parallel spring arms (14, 140) are provided, each being supported on the structure (12) at one end, and at the other end being fastened to a connecting part (130), two projecting lever arms (60) being provided on the middle spring arm (14), and on which two piezoelectric transducers (62) are each supported at their one end, and at their respective second end the piezoelectric transducers (62) each being supported via a bar segment (132) connected to the connecting part, wherein the bar segments (132), the connecting part (130), and the piezoelectric transducers (62) together form the inertial mass.

Aircraft, including at least one sensor (106) for detecting vibrations, at least one force generator (10) according to one or more of the preceding claims, and a control unit (114) for controlling the at least one force generator (108) on the basis of the signals of the at least one sensor (106).