4 results about "Resonance problem" patented technology

The invention relates to a fan system resonance detection method and an intelligent electric appliance. The fan system resonance detection method comprises the steps that a plurality of sensors are arranged on a fan system; constructing a simulation model of the fan system, importing the vibration signals collected by each A-type sensor into the simulation model, and obtaining vibration data of the whole fan system by using a modal extension method; establishing a digital twinborn model, and importing the simulation model, vibration data of the whole fan system and vibration signals acquired by each A-type sensor into the digital twinborn model to obtain a result output by the digital twinborn model; comparing a result output by the digital twin model with a detection result of the B-type sensor, and updating the simulation model; and judging whether the current fan system resonates or not according to the ratio of the maximum amplitude Smax of all the vibration signals of the fan system to S. According to the method, the resonance problem of the fan system can be recognized in real time, then adjustment measures are triggered, abnormal noise is reduced, and resonance generation nodes are recognized.

To improve adhesive strength and resolve resonance issues. [Solution] The coil device 1 includes a wire 5, a bobbin 3 on which a winding portion 50 of the wire 5 is formed, cores 2a and 2b attached to the bobbin 3, and a cover 4 that protects the winding portion 50. The cover 4 has an opening 46 formed in a position that simultaneously opens at least a portion of the cores 2a and 2b and at least a portion of the bobbin 3 to the outside. The bobbin 3, cores 2a and 2b and the cover 4 are fixed together with adhesive 8a provided in the opening 46.

The low-noise compressor shell comprises a shell body, a plurality of craters are arranged on the surface of the shell body, and the craters enable the surface of the shell body to form a honeycomb pitted surface. The surface of the compressor shell is treated to form craters, so that the surface of the shell presents a honeycomb pitted surface effect, the reflection path of sound waves is increased, the penetration of noise is reduced, the inherent frequency of the whole machine is improved and the resonance problem can be effectively avoided through the characteristic that the surface of the shell is uneven.

This utility model discloses a resonance suppression device and electrical equipment, relating to the field of conductive connection technology for filter structures. The resonance suppression device includes a conductive busbar, a conductive connector, and a capacitor. The conductive connector is electrically connected to the conductive busbar. The capacitor is electrically connected to the conductive busbar through the conductive connector. The capacitor is electrically connected to the filter housing through a grounding component and the conductive connector. The conductive busbar, conductive connector, capacitor, and grounding component form a filter circuit, and a damping resistor is connected in series in the filter circuit. The technical solution provided by this utility model can solve the EMI resonance problem of existing filters.