7results about How to "High error rate" patented technology

The application belongs to the technical field of automobile manufacturing, and discloses a post-processing method, device and equipment for a vehicle body stiffness discipline and a storage medium. The method comprises the following steps: constructing a whole vehicle finite element model based on multidisciplinary performance dimensions, at least including a structural stiffness discipline; marking stiffness examination points in the whole vehicle finite element model of the structural stiffness discipline and performing finite element analysis; determining variable factors according to the analysis results; building a sampling model corresponding to the structural stiffness discipline; setting a sampling process according to the performance value of the structural stiffness discipline and a preset sampling requirement; sampling the variable factors according to the sampling process based on the sampling model; and outputting analysis results corresponding to the structural stiffness discipline. In the foregoing manner, the sampling model is set to automatically post-process the benchmark analysis results of the structural stiffness discipline, thereby avoiding high labor costs and high error rates caused by manual data post-processing and improving the optimization efficiency of multidisciplinary lightweighting.

The application provides a workpiece edge automatic tracking method and system. The method comprises the following steps: collecting images of a predefined part of a workpiece and edge points thereof through a window of a captured image; inputting a parameter step length according to the edge points; selecting a preset number of edge points at the end of a motion track of the image as a local point set; applying the local point set to fit a curve at the end of the motion track by using a least square method; calculating a tangent direction vector of the curve according to a polynomial of the obtained curve; calculating a next motion coordinate of a window of the captured image according to a unitized tangent direction vector and the step length; moving the window to the calculated next coordinate, and repeating the above steps until an end mark is encountered. The application perfectly solves the automatic measurement of a contour, and provides a perfect solution for repeated measurement of a large number of same type components.

The utility model provides a bottle discharging structure of a bottle blowing machine, which comprises a rack and a speed reducing motor, the speed reducing motor is arranged at the end part of the side surface of the rack, the inner side of the rack is movably connected with a conveying belt, the outer surface of the output end of the speed reducing motor is movably connected with the conveying belt, and the two sides of the rack are fixedly connected with positioning frames. The plastic bottle conveying device has the advantages that the stability and the position accuracy of plastic bottles in the conveying process are ensured through centering positioning of the outer flaring and the positioning rod, the plastic bottles are effectively prevented from tilting due to uneven stress in the pushing process through the arrangement of the blocking rod, and the output stability is further improved; the whole bottle discharging structure achieves automatic positioning, pushing, blocking and stable output of the plastic bottles. The difficulty and the labor intensity of manual operation are reduced, and the safety and the reliability of production are also improved; the bottle discharging structure is low in error rate, stable in plastic bottle output posture, not prone to line stopping and high in working efficiency.

This application discloses an eSIM profile selection and roaming method, apparatus, device, and medium, belonging to the field of communication technology. The method includes: acquiring real-time operator data and network quality assessment data; identifying the country and region where the eSIM device is currently located; obtaining a score for each operator through weighted calculation based on the operator data, network quality assessment data, and the country and region where the eSIM device is currently located; determining the operator with the highest score as the target operator based on the scores of each operator, and using the profile of the target operator as the final selected eSIM profile. This application solves the technical problems of low efficiency, high error rate, and inability to respond to network changes in real time when eSIM devices roam across borders in the prior art.

The application discloses a robust watermarking method based on a Transformer and a denoising diffusion model, and comprises the following steps: inputting a carrier image and an original watermark into a watermark encoder composed of a Transformer to generate an encoded image in which the watermark is embedded; inputting the encoded image into a noise-free layer, a known noise layer and an unknown noise layer based on a denoising diffusion model in three ways to generate a noise image; inputting the noise image into a watermark decoder composed of a Transformer to obtain an extracted watermark; calculating a loss function and updating parameters of the watermark encoder and the watermark decoder by using a stochastic gradient descent method; repeating the above steps until a set training number is met, and the training of the watermark encoder and the watermark decoder is completed; and the watermark encoder and the watermark decoder are reserved for embedding and extracting of the watermark respectively.

The invention relates to the technical field of fault diagnosis, in particular to a fault analysis method and device for an electric drive system, electronic equipment and a storage medium, and the method comprises the steps: obtaining the vehicle information of a faulty vehicle, generating the fault information of the faulty vehicle based on the vehicle information and corresponding cloud data, and storing the fault information of the faulty vehicle. According to the fault information, a fault path and a corresponding key signal are determined so as to identify an abnormal point, then a plurality of failure paths corresponding to an electric drive fault are generated based on the abnormal point, a fault tree and a troubleshooting path are output, and a corresponding abnormal signal data point is exported so as to determine a problem true cause. Therefore, the problems that related technologies depend on manual intervention of related technicians, the fault positioning speed and accuracy are limited by professional experience and technical level of the related technicians, the manual judgment cost is increased, the error rate is increased due to subjective judgment deviation, the troubleshooting efficiency is reduced, and the fault positioning accuracy is reduced are solved. And the requirements of rapid and accurate diagnosis of the electric drive system are difficult to meet.

The invention relates to a digital control system based on an integrated board and a design method of the control system. The system comprises a PLC board card, a frequency converter board card, a touch screen and a motor. The PLC board card and the frequency converter board card are fixedly installed on the electric fitting board. The PLC board card is provided with a board card interface connected with an external sensor and an instrument; the PLC board card is a PLC board card which is used for collecting external sensors and controlling the starting, stopping and rotating speed of a motor by regulating and controlling each frequency converter in real time so as to realize constant-pressure water supply and some abnormal protection; all external signals need to pass through the PLC board card, and meanwhile, the PLC board card communicates with the frequency converter board through an RS485 bus, reads the working state of the frequency converter board, and controls starting, stopping and debugging of the frequency converter board card so as to control the motor; the touch screen is connected with the PLC board card through a bus, and the touch screen and the control power supply are provided by the PLC board card. The device is low in cost, space-saving, high in wiring efficiency, convenient to overhaul and high in environment adaptability.