An unbalance detection device for detecting unbalance of a rotor of a turbo-cartridge which includes the rotor including a turbine wheel and a compressor wheel coupled via a rotational shaft and a bearing housing accommodating a bearing which supports the rotor rotatably, includes: a turbine-side housing member accommodating the turbine wheel; a compressor-side housing member accommodating the compressor wheel; a support mechanism configured to nip and support the turbo-cartridge from both sides by pressing at least one of the turbine-side housing member or the compressor-side housing member toward the turbo-cartridge; a vibration insulator interposed in each of a gap between the turbine-side housing member and the turbo-cartridge and a gap between the compressor-side housing member and the turbo-cartridge; and a vibration sensor installed so as to be contactable with the bearing housing, the vibration sensor being capable of detecting vibration upon rotation of the rotor.

An unbalance detection device for detecting unbalance of a rotor of a turbo-cartridge which includes the rotor including a turbine wheel and a compressor wheel coupled via a rotational shaft and a bearing housing accommodating a bearing which supports the rotor rotatably, includes: a turbine-side housing member accommodating the turbine wheel; a compressor-side housing member accommodating the compressor wheel; a support mechanism configured to nip and support the turbo-cartridge from both sides by pressing at least one of the turbine-side housing member or the compressor-side housing member toward the turbo-cartridge; a vibration insulator interposed in each of a gap between the turbine-side housing member and the turbo-cartridge and a gap between the compressor-side housing member and the turbo-cartridge; and a vibration sensor installed so as to be contactable with the bearing housing, the vibration sensor being capable of detecting vibration upon rotation of the rotor.

A system for converting an input oscillation having an input frequency into an output oscillation having an output frequency is disclosed. The system comprises: a controller configured for receiving the input oscillation and responsively generating a multi-component drive signal. A frequency of at least one component of the drive signal is other than two times the input frequency. In some embodiments, a frequency of another component of the drive signal equals about two times the output frequency. The system also comprises an oscillator for generating pump oscillations responsively to the drive signal and applying parametric excitation to the input oscillation at the pump oscillations.

A system for converting an input oscillation having an input frequency into an output oscillation having an output frequency is disclosed. The system comprises: a controller configured for receiving the input oscillation and responsively generating a multi-component drive signal. A frequency of at least one component of the drive signal is other than two times the input frequency. In some embodiments, a frequency of another component of the drive signal equals about two times the output frequency. The system also comprises an oscillator for generating pump oscillations responsively to the drive signal and applying parametric excitation to the input oscillation at the pump oscillations.

Described is a machine (1) for fitting and removing a tyre from a corresponding wheel rim of a vehicle, comprising: a wheel-holder unit (4), which rotates about a first axis (A); at least one bead breaker tool (29), movable along a second axis (B) parallel to the first axis (A); a roller (2) rotating about a fourth axis (D) parallel to the first axis (A) and configured to move by rotation about a fifth axis (E) spaced from the fourth axis (D), between an active position where it is in contact with a tyre tread of the wheel mounted on the wheel-holder unit (4), to a position of non-interference relative to the tyre; at least one sensor (40) connected to the roller (2) for detecting a signal representing a force transmitted to the roller (2) by the tyre; a removal tool (37), which is movable by rotation about a sixth axis (F) parallel to the first axis (A) and spaced from it, between a first position proximal to the first axis (A) and a second position distal from the first axis (A), which is movable in a direction parallel to the first axis (A) and movable towards and away from the sixth axis (F).

Described is a machine (1) for fitting and removing a tyre from a corresponding wheel rim of a vehicle, comprising: a wheel-holder unit (4), which rotates about a first axis (A); at least one bead breaker tool (29), movable along a second axis (B) parallel to the first axis (A); a roller (2) rotating about a fourth axis (D) parallel to the first axis (A) and configured to move by rotation about a fifth axis (E) spaced from the fourth axis (D), between an active position where it is in contact with a tyre tread of the wheel mounted on the wheel-holder unit (4), to a position of non-interference relative to the tyre; at least one sensor (40) connected to the roller (2) for detecting a signal representing a force transmitted to the roller (2) by the tyre; a removal tool (37), which is movable by rotation about a sixth axis (F) parallel to the first axis (A) and spaced from it, between a first position proximal to the first axis (A) and a second position distal from the first axis (A), which is movable in a direction parallel to the first axis (A) and movable towards and away from the sixth axis (F).

Described is a machine (1) for fitting and removing a tyre from a corresponding wheel rim of a vehicle, comprising: a wheel-holder unit (4), which rotates about a first axis (A); at least one bead breaker tool (29), movable along a second axis (B) parallel to the first axis (A); a roller (2) rotating about a fourth axis (D) parallel to the first axis (A) and configured to move by rotation about a fifth axis (E) spaced from the fourth axis (D), between an active position where it is in contact with a tyre tread of the wheel mounted on the wheel-holder unit (4), to a position of non-interference relative to the tyre; at least one sensor (40) connected to the roller (2) for detecting a signal representing a force transmitted to the roller (2) by the tyre; a removal tool (37), which is movable by rotation about a sixth axis (F) parallel to the first axis (A) and spaced from it, between a first position proximal to the first axis (A) and a second position distal from the first axis (A), which is movable in a direction parallel to the first axis (A) and movable towards and away from the sixth axis (F).

Described is a machine (1) for fitting and removing a tyre from a corresponding wheel rim of a vehicle, comprising: a wheel-holder unit (4), which rotates about a first axis (A); at least one bead breaker tool (29), movable along a second axis (B) parallel to the first axis (A); a roller (2) rotating about a fourth axis (D) parallel to the first axis (A) and configured to move by rotation about a fifth axis (E) spaced from the fourth axis (D), between an active position where it is in contact with a tyre tread of the wheel mounted on the wheel-holder unit (4), to a position of non-interference relative to the tyre; at least one sensor (40) connected to the roller (2) for detecting a signal representing a force transmitted to the roller (2) by the tyre; a removal tool (37), which is movable by rotation about a sixth axis (F) parallel to the first axis (A) and spaced from it, between a first position proximal to the first axis (A) and a second position distal from the first axis (A), which is movable in a direction parallel to the first axis (A) and movable towards and away from the sixth axis (F).

A novel measurement method and a corresponding measurement setup for increasing the reproducibility and the accuracy of the measurement of the imbalance of rotating components with vagabond-like, variable imbalance behaviour. The rotating component has individual masses which are capable of vibrating and which can be moved independently of one another, which are employed, for example, in centrifugal force pendulums or torsional vibration absorbers of similar construction.

A novel measurement method and a corresponding measurement setup for increasing the reproducibility and the accuracy of the measurement of the imbalance of rotating components with vagabond-like, variable imbalance behaviour. The rotating component has individual masses which are capable of vibrating and which can be moved independently of one another, which are employed, for example, in centrifugal force pendulums or torsional vibration absorbers of similar construction.