48results about How to "Solve technical problems with large errors" patented technology

The application discloses a method and device for determining a signal, a storage medium, and an electronic device. Wherein, the method includes: obtaining a DC bias signal value obtained by the ADC during calibration sampling; obtaining a normal sampling value obtained by the ADC during normal sampling; subtracting the DC bias signal value from the normal sampling value, Get the AC signal value required for motor control. The present application solves the technical problem that the measured stator current has a relatively large error in the related art.

The invention discloses a chess-playing difficulty grade processing method and a processing device, and a robot, wherein the method comprises the following steps: in a current human-machine chess playing course, recording a chess playing process of a player; in accordance with the chess playing process of the player, calculating a chess playing level of the player; and when a next human-machine chess playing course begins, switching a chess-playing difficulty grade to be matched with the chess playing level of the player in accordance with the calculated chess playing level of the player. With the application of the chess-playing difficulty grade processing method and the processing device as well as the robot provided by the invention, the technical problem in related technologies that a relatively serious error in the chess-playing difficulty grade of the robot is caused by artificially judging the chess playing level of the player can be solved.

The invention discloses a distributed video coding-based adaptive correlation noise model construction system and a distributed video coding-based adaptive correlation noise model construction method, which belong to the technical field of distributed video coding. The system comprises a DC coefficient tape correlation noise (DCN) mean value calculation module, an original information-assisted residual error processing module, a judgment module and a mode establishment module. A coder transmits a DC coefficient mean value of an original Wyner-Ziv frame to a decoder; and the decoder constructsmodels of a DC coefficient tape correlation noise area and an AC coefficient tape correlation noise area respectively, and dynamically regulates the models mainly by utilizing the positioning and parameter calculation of an original information assistance model provided by the coder in combination with the motion conditions of an image so as to realize adaptive model construction. By the system and the method, the main technical problems of low accuracy and low flexibility of the prior art are solved, the correlation noise model is more accurate on the basis of not increasing the coding complexity and a transmission code rate, and the rate-distortion performance of the whole system is improved; and the system and the method can be used for a distributed video communication system.

The invention discloses a method and a device for classifying users according to search log data of a server. The method comprises the following steps: acquiring a query terms used by each of N users during searching from the search log data of the server and b access webpages which are searched according to each query term and are accessed by the users; performing segmentation processing on each query term and the b access webpages which correspond to each query term respectively to obtain c keywords which correspond to each query term; calculating the weights of the c keywords according to the occurrence times of the c keywords in each query term and the b access webpages; establishing a user behavior vector for each user according to the c keywords which correspond to each query term and the weights of the c keywords; calculating the similarity among the user behavior vectors of the N users; classifying the N users according to the calculated similarity.

The invention provides a method and device for detecting overprint accuracy. The overprint accuracy detection method of the present invention includes: collecting a target detection image, the target detection image includes at least two overprint marks, each overprint mark is formed by spraying nozzles of different ink colors; determining the overprint of each overprint mark relative to the reference The offset of the mark; the overprint accuracy is determined according to the offset. In the present invention, the overprint accuracy is determined by the offset of the overprint mark, which solves the technical problem in the prior art that the error of the detection method is relatively large.

The present application discloses a phase detecting method and device, a computer device, and a computer readable storage medium. The method comprises the steps of: obtaining a Hall signal value inducted by a Hall sensor in a three-phase motor, and obtaining a counter electromotive force value of a set A phase relative to a set B phase in the three-phase motor when the current Hall signal value isjumped to an adjacent Hall signal value each time, wherein the counter electromotive force value is detected and obtained when the three-phase motor is in a rotation state under the drive of the external force; and according to the corresponding counter electromotive force value when the current Hall signal value is jumped to the adjacent Hall signal value each time, calculating an electrical angle value corresponding each counter electromotive force value so as to obtain a corresponding relation of A, B and C phases, the Hall signal value of each jump and each electrical angle value. The technical problem is solved that the detection result of the phase detection method large in error in the prior art.