Fibrous-web consolidating device which is designed for consolidating a fibrous web and which has: - at least two drive installations (51_1, 102_1, 51_2, 102_2), each of which is designed for driving at least one needling installation (53_1, 103_1, 53_2, 103_2) of the fibrous-web consolidating device, wherein each needling installation is designed for consolidating the fibrous web and is driven by one of the at least two drive installations (51_1, 102_1, 51_2, 102_2); - at least one vibration-detecting installation which is designed for detecting data pertaining to vibrations, wherein the vibrations comprise such vibrations which are created on account of the operation of the needling installations (53_1, 103_1, 53_2, 103_2); and - a control installation which is designed for receiving the data pertaining to the vibrations of the fibrous-web consolidating device which are detected by the vibration-detecting device, and for controlling the operation of the at least two drive installations (51_1, 102_1, 51_2, 102_2) in response to the data received pertaining to vibrations; - wherein the control installation is designed for controlling the operation of the at least two drive installations (51_1, 102_1, 51_2, 102_2) by transmitting items of control information to the drive installations (51_1, 102_1, 51_2, 102_2); wherein - the items of control information include items of information pertaining to a phase shift between two of the at least two drive installations (51_1, 102_1, 51_2, 102_2), the two drive installations to be operated by way of said items of information; and - the phase shift is a phase shift which has been determined in response to the receipt of the data pertaining to vibrations. - at least two drive installations (51_1, 102_1, 51_2, 102_2), each of which is designed for driving at least one needling installation (53_1, 103_1, 53_2, 103_2) of the fibrous-web consolidating device, wherein each needling installation is designed for consolidating the fibrous web and is driven by one of the at least two drive installations (51_1, 102_1, 51_2, 102_2); - at least one vibration-detecting installation which is designed for detecting data pertaining to vibrations, wherein the vibrations comprise such vibrations which are created on account of the operation of the needling installations (53_1, 103_1, 53_2, 103_2); and - a control installation which is designed for receiving the data pertaining to the vibrations of the fibrous-web consolidating device which are detected by the vibration-detecting device, and for controlling the operation of the at least two drive installations (51_1, 102_1, 51_2, 102_2) in response to the data received pertaining to vibrations; - wherein the control installation is designed for controlling the operation of the at least two drive installations (51_1, 102_1, 51_2, 102_2) by transmitting items of control information to the drive installations (51_1, 102_1, 51_2, 102_2); wherein - the items of control information include items of information pertaining to a phase shift between two of the at least two drive installations (51_1, 102_1, 51_2, 102_2), the two drive installations to be operated by way of said items of information; and - the phase shift is a phase shift which has been determined in response to the receipt of the data pertaining to vibrations.