6 results about "Transmission distortion" patented technology

This application discloses a method for enhancing the quality of bare fiber sensing signals in vehicle-mounted vibration environments. It relates to the field of fiber optic sensing signal quality enhancement, and utilizes a multi-axis inertial measurement unit and a vibration sensing network to construct a spatiotemporal feature tensor, enabling three-dimensional dynamic perception of the vibration environment. Filtering parameters and gain are dynamically configured based on vibration characteristics to ensure stable signal acquisition under strong vibration conditions. A deep feature decoupling network, combined with vibration environment information, effectively separates noise from the target signal, improving the signal-to-noise ratio. A dynamic compensation module, based on a physical heuristic model, corrects vibration-induced transmission distortion from three dimensions: polarization state, birefringence, and microbending loss, ensuring the physical integrity of the signal. A closed-loop collaborative control mechanism dynamically optimizes the parameters of each module through real-time signal quality feedback, forming an adaptive optimization closed loop. Through spatiotemporal multi-dimensional collaborative processing, high-quality and robust enhancement of bare fiber sensing signals in vehicle-mounted vibration environments is achieved.

The application discloses a kind of pressure-resistant waterproof cable and preparation method thereof, it is related to cable technical field, to solve the problem of insufficient waterproof performance and limited pressure resistance of existing cable, including cable core, the outside of the cable core is equipped with insulation layer, the outside of the insulation layer is equipped with inner waterproof layer, the outside of the inner waterproof layer is equipped with pressure-resistant layer, the outside of the pressure-resistant layer is equipped with outer waterproof layer, the outside of the outer waterproof layer is equipped with outer sheath.The application has greatly improved the waterproof performance of cable, effectively prevents moisture from penetrating into the cable inside, avoids the signal transmission distortion, noise interference and other problems caused by the performance decline of insulation layer, at the same time, significantly enhance the pressure resistance of cable, so that it can effectively protect the internal structure when being extruded or collided by external force, guarantee the stability of signal transmission.

The application provides a transformer frequency response test device and method based on convolution compensation, which comprises a signal generating unit, a double-channel signal collecting unit, a data storage and interaction unit, a central processing and control unit, a standardized interface module and a calibration module. By injecting a broadband calibration signal into the test cable, the incident signal, the output signal and the reflected signal are collected to calculate the preliminary transfer function of the cable; the cable transfer function is fitted based on the convolution integral model, the phase frequency characteristic is directly measured by using the reflected signal, and the transfer function of the cable is obtained; then the transformer frequency response test is carried out, the transmission distortion of the excitation cable and the response cable is respectively deconvoluted and compensated, the real transfer function of the transformer winding is calculated, and the amplitude frequency and phase frequency characteristic curves are generated. The frequency coupling effect of the cable is described by introducing the convolution integral operator, the accuracy of the transformer frequency response test is improved, and a reliable basis is provided for the winding deformation diagnosis.

The application discloses a new type of hydraulic driving swing plate wave making device and relates to the field of soil centrifugal simulation test devices. The traditional linear hydraulic wave making device mechanism is prone to problems such as jamming, liquid leakage, wave form transmission distortion and the like when running at high speed under a super gravity field. The application utilizes the natural anti-centrifugal force characteristics of a servo hydraulic swing cylinder, and uses a heavy load cylindrical rod to directly hinge a wave making plate and the hydraulic swing cylinder, thereby simplifying the transmission mechanism, overcoming the non-uniform deformation of the linear hydraulic mechanism and the transmission mechanism under a super gravity field, and overcoming the above-mentioned problems such as the existence of high-order harmonics in wave form transmission. The application has the advantages of stable and reliable mechanism and small deformation, improves the transmission efficiency and service life of the equipment, and can realize high water depth, high frequency and large amplitude wave making under a super gravity field.

This invention discloses a method and system for controlling the wire winding of a power pole frame based on real-time tension feedback. Specifically, it relates to the field of wire winding tension control technology in the manufacturing of prestressed concrete power poles, and is used to solve the problems of tension feedback distortion and uneven prestressing caused by the dynamic changes in the friction coefficient between the steel wire and the frame in existing technologies. By acquiring the steel wire tension feedback value and the axial position information of the winding head in real time, the system judges control anomalies based on tension deviations. When an anomaly occurs, it continuously calculates the higher-order statistics of the tension value and identifies the directional change of the friction state based on its evolution trajectory. It correlates this evolution feature with the axial position to determine the spatial propagation characteristics of the friction state change, evaluates the degree of tension transmission distortion based on this feature, and finally dynamically compensates and adjusts the tension control system parameters according to the degree of distortion. This method can effectively identify and compensate for tension distortion caused by time-varying friction, and improve the uniformity and accuracy of prestressing application.

This invention discloses a method and system for controlling the wire winding of a power pole frame based on real-time tension feedback. Specifically, it relates to the field of wire winding tension control technology in the manufacturing of prestressed concrete power poles, and is used to solve the problems of tension feedback distortion and uneven prestressing caused by the dynamic changes in the friction coefficient between the steel wire and the frame in existing technologies. By acquiring the steel wire tension feedback value and the axial position information of the winding head in real time, the system judges control anomalies based on tension deviations. When an anomaly occurs, it continuously calculates the higher-order statistics of the tension value and identifies the directional change of the friction state based on its evolution trajectory. It correlates this evolution feature with the axial position to determine the spatial propagation characteristics of the friction state change, evaluates the degree of tension transmission distortion based on this feature, and finally dynamically compensates and adjusts the tension control system parameters according to the degree of distortion. This method can effectively identify and compensate for tension distortion caused by time-varying friction, and improve the uniformity and accuracy of prestressing application.