3results about How to "Improve the analysis method" patented technology

The automobile front door cover size detection device of the present disclosure comprises a part storage table for placing parts, a part grabbing hand for grabbing parts, a support component for fixing and clamping parts, a detection system comprising a data acquisition element, a data calculation system and a data display system, the data acquisition element is used for acquiring part data, the data calculation system is used for determining part size change value according to part data, and the data display system is used for outputting part size change value; a collaborative robot is used for moving the part grabbing hand, and the collaborative robot is used for moving the data acquisition element; a control system is in communication connection with the part grabbing hand, the detection system and the collaborative robot, the control system is used for outputting detection instructions, the detection instructions comprise gripping instructions, part moving instructions and scanning instructions, the part moving instructions are used for controlling the collaborative robot to move the parts through the part grabbing hand, and the scanning instructions are used for controlling the collaborative robot to move the data acquisition element to scan the parts to acquire part data.

A brittle evaluation method of weathered granite under different confining pressures, comprising: drilling fresh granite rock samples from underground mine, and making standard test pieces under natural environment for 7 years of weathering; respectively performing triaxial compression synchronous acoustic emission test of the standard test pieces under different confining pressures, obtaining stress-strain relationship diagram, acoustic emission energy-cumulative energy-stress-time relationship diagram of each standard test piece; defining brittle index of weathered granite by acoustic emission cumulative energy B 3. Quantitative evaluation of the brittleness of weathered granite under different confining pressures. The present application does not completely depend on the change of stress-strain behavior, directly obtains from the acoustic emission signal parameters, is convenient and fast, has simple calculation process, improves the certainty of the brittle evaluation result, and has good application prospect for studying the deformation and failure of such mine surrounding rock and stable support in mine operation.

An analytical method for determining the trapped oil pressure and its extreme values ​​in gear pumps / motors includes the following steps: Step 1, determining the trapped oil region and its positional variables based on the gear pair meshing process; Step 2, an analytical solution method for the trapped oil pressure; Step 3, a fitting formula method for obtaining the unloading area; Step 4, an analytical solution method for determining the extreme trapped oil pressure and its occurrence location. This invention offers a simpler method, more reliable results, and more accurate extreme values ​​and their occurrence locations; it significantly simplifies existing numerical methods for determining trapped oil pressure; it clarifies that the extreme value of the trapped oil pressure occurs at the point where the unloading groove is about to close, rather than at the actual closure point, and the specific extreme value location depends on the size of the unloading area in the area where the unloading groove is about to close; the method, obtained from 3D feature measurement of the unloading area and an Excel trend line, is highly efficient, fast, and accurate, providing a reliable basis for the accurate evaluation of the extreme trapped oil pressure in external gear pumps / motors and effective control in product design.