3results about How to "Eliminate offset effects" patented technology

The utility model discloses a saddle and ram mechanism of a five-axis machine tool, which relates to the technical field of machine tools, and particularly comprises a saddle and a ram, the saddle and the ram adopt a concentric-square-shaped symmetrical box-in-box structure, the saddle is in a two-half design, the saddle comprises a main shell and an auxiliary shell, and the main shell and the auxiliary shell are arranged in parallel. The main shell and the auxiliary shell are connected through bolts to form a concentric-square-shaped symmetrical structure, and supporting blocks are arranged at the four corners of the two sides of the sliding saddle. According to the sliding saddle ram mechanism of the five-axis machine tool, through the design of a front and rear double-arm supporting structure of the sliding saddle, compared with a side hanging type structure, the probability that the center of a main shaft deviates can be reduced, and through the box-in-box symmetrical structure of the sliding saddle and the cross beam, the change of the center of the ram caused by thermal deformation due to workshop temperature change is greatly reduced; and the saddle ram also adopts a box-in-box structure of a rectangular-ambulatory-plane symmetrical four-wire-rail, so that the precision retentivity and the shock resistance of the ram reach the optimal state, the influence of temperature change on the center offset of the main shaft is reduced again, and the machining precision of the five-axis machine tool is guaranteed.

The embodiment of the application discloses a low-voltage sampling and holding circuit, a control method thereof and a converter, relates to the technical field of integrated circuit design, and the low-voltage sampling and holding circuit comprises a sub-threshold leakage suppression module, a double-gate voltage bootstrap module, a dynamic substrate biasing module, a core sampling tube, a pseudo switch tube and a clock control unit. The sub-threshold leakage suppression module comprises a charge redistribution capacitor, and is used for generating a negative voltage in a holding stage. The double-gate voltage bootstrap module is used for lifting the gate voltage of the core sampling tube in a sampling stage. The dynamic substrate biasing module is used for dynamically switching the substrate potential of the core sampling tube and key devices. The core sampling tube comprises a first short channel MOS tube and a second short channel MOS tube connected in series. The clock control unit is used for outputting a first clock signal and a second clock signal, and controlling the modules to work in cooperation in the sampling stage and the holding stage. The high linearity sampling and low leakage holding in the low-voltage scene are synergistically optimized.

The application discloses a real-time SOC detection and diagnosis method and system for power batteries, relates to the technical field of pre-diagnosis, and comprises the following steps: generating a normalized image of a power battery pack, performing mask marking on the normalized image to obtain a region mask; determining the directions of line segments corresponding to the normalized image based on the region mask to obtain direction vectors of the line segments; performing anti-gravity bridge connection screening on all the line segments based on the direction vectors of the line segments to obtain a bridge connection line bundle set; generating a correction amount based on the bridge connection line bundle set, correcting a real-time SOC value corresponding to the power battery based on the correction amount to obtain a corrected SOC value. The application improves the reliability of a real-time SOC result in a structural abnormal scenario.