The present disclosure relates to a stringed instrument resonance analysis device which uses a scientific detection method to evaluate the resonance effect of stringed instrument, wherein the stringed instrument resonance analysis device has a cabinet, a holder, a resonant sounder, a sonic generator, at least one sonic collector and a spectrum analyzer. The cabinet forms an accommodating space therein. The holder a holder is disposed in the accommodating space and used to fix and hold the stringed instrument. The resonant sounder is disposed in the accommodating space and fixed and clamped to a bridge on a loudspeaker box of the stringed instrument. The sonic generator is connected to the resonant sounder. The sonic collector is disposed in the accommodating space and adjacent to the loudspeaker box of the stringed instrument. The spectrum analyzer is connected to the at least one sonic collector.

The present disclosure relates to a stringed instrument resonance analysis device which uses a scientific detection method to evaluate the resonance effect of stringed instrument, wherein the stringed instrument resonance analysis device has a cabinet, a holder, a resonant sounder, a sonic generator, at least one sonic collector and a spectrum analyzer. The cabinet forms an accommodating space therein. The holder a holder is disposed in the accommodating space and used to fix and hold the stringed instrument. The resonant sounder is disposed in the accommodating space and fixed and clamped to a bridge on a loudspeaker box of the stringed instrument. The sonic generator is connected to the resonant sounder. The sonic collector is disposed in the accommodating space and adjacent to the loudspeaker box of the stringed instrument. The spectrum analyzer is connected to the at least one sonic collector.

A method for detecting a direct current component in an inductive device, for example in a transformer or choke, includes using a computer for recording an oscillation signal, either of sound emitted from the device or of mechanical oscillation of the device, determining the frequency range of the oscillation signal, determining the value of at least one odd frequency in the frequency range, comparing the value of the odd frequency with the value of at least one even frequency in the frequency range, and determining a direct current component when the value of the odd frequency differs from the even frequency by a predefined amount. The method can be carried out without measuring equipment in the interior of an inductive device and without the involvement of an expert. A computer program product for carrying out the method is also provided.

A method for detecting a direct current component in an inductive device, for example in a transformer or choke, includes using a computer for recording an oscillation signal, either of sound emitted from the device or of mechanical oscillation of the device, determining the frequency range of the oscillation signal, determining the value of at least one odd frequency in the frequency range, comparing the value of the odd frequency with the value of at least one even frequency in the frequency range, and determining a direct current component when the value of the odd frequency differs from the even frequency by a predefined amount. The method can be carried out without measuring equipment in the interior of an inductive device and without the involvement of an expert. A computer program product for carrying out the method is also provided.

Various embodiments of an apparatus for measuring binding kinetics of an interaction of an analyte material present in a fluid sample are disclosed. The apparatus includes a sensing resonator having at least one binding site for the analyte material; actuation circuitry adapted to drive the sensing resonator into an oscillating motion; measurement circuitry coupled to the sensing resonator and adapted to measure an output signal of the sensing resonator representing resonance characteristics of the oscillating motion of the sensing resonator; and a controller coupled to the actuation and measurement circuitry, wherein the controller is adapted to detect an individual binding event between the at least one binding site and a molecule of the analyte material.

Various embodiments of an apparatus for measuring binding kinetics of an interaction of an analyte material present in a fluid sample are disclosed. The apparatus includes a sensing resonator having at least one binding site for the analyte material; actuation circuitry adapted to drive the sensing resonator into an oscillating motion; measurement circuitry coupled to the sensing resonator and adapted to measure an output signal of the sensing resonator representing resonance characteristics of the oscillating motion of the sensing resonator; and a controller coupled to the actuation and measurement circuitry, wherein the controller is adapted to detect an individual binding event between the at least one binding site and a molecule of the analyte material.

The present invention relates to a method and a device for controlling an ultrasound tool unit for machining a workpiece on a machine tool. For this, a plurality of parameter sets are stored on a storage device of a control device of the machine tool. When controlling an ultrasound transducer of the ultrasound tool unit received on a work spindle of the machine tool on the basis of a sensor signal input into a controller by means of a generator operated by the controller, on the basis of a first parameter set, which is associated with the ultrasound tool unit and sets the operation of the controller, an operating setting of the controller is switched by changing the first parameter set setting the operation of the controller on the basis of a second parameter set, which is associated with the ultrasound tool unit, of the plurality of parameter sets stored on the storage device.

The present invention relates to a method for quantifying and diagnosing the quality of manufacturing equipment, that is, to a quantitative diagnostic method for the quality of manufacturing equipment. It is possible to quantify the quality of manufacturing equipment having a plurality of production elements and diagnose same in a single attempt.

Creation and use of a digital twin instance (DTI) for a physical instance of the part. The DTI may be created by a model inversion process such that model parameters are iterated until a convergence criterion related to a physical resonance inspection result and a digital resonance inspection result is satisfied. The DTI may then be used in relation to part evaluation including through simulated use of the part. The physical instance of the part may be evaluated by way of the DTI or the DTI may be used to generate maintenance schedules specific to the physical instance of the part.

Creation and use of a digital twin instance (DTI) for a physical instance of the part. The DTI may be created by a model inversion process such that model parameters are iterated until a convergence criterion related to a physical resonance inspection result and a digital resonance inspection result is satisfied. The DTI may then be used in relation to part evaluation including through simulated use of the part. The physical instance of the part may be evaluated by way of the DTI or the DTI may be used to generate maintenance schedules specific to the physical instance of the part.