3 results about "Critical parameter" patented technology

This application relates to the field of vehicle testing technology, specifically a method and device for determining critical parameters in vehicle slope rollover tests. The method includes: collecting a set of test data from actual vehicle rollovers and dividing it into subsets according to vehicle type; inputting vehicle parameters and test parameters into a forward discriminant model to train the model; calculating a basic inverse model from the forward discriminant model, adding constraints to the output of the basic inverse model, and correcting the basic inverse model using the vehicle parameters and test parameters of the vehicle to be solved; inputting the rollover result into the basic inverse model to obtain an angle range, and filtering test data within the angle range; returning to the operation of training the forward discriminant model until a cutoff condition is met to obtain the target angle range; and finally verifying the rollover critical angle value from the target angle range through actual vehicle angle gradient tests. This application achieves accurate inverse solving from rollover results to test parameters.

Method and system for managing critical parameters of assembly of pressure boundary bolted flanged joints (1 ) having a gasket (9) between sealing surfaces (11,12) of flanges (2,3). Bolt load, applied load, turn of nut or bolt head, joint misalignment and flange gap closure can be monitored and controlled concurrently during assembly to indicate if joint assembly is unacceptable and / or whether assembly / component requires rectification. A field control unit (23) has a portable electronic processor (21 ) and a data acquisition and control unit (22), including a load cell test sensor (24) enabling pre-assembly of the joint or bolts (4,5) for on-site testing of applied bolt load by using the load cell test sensor (24) to verify bolt load achieved. Automatically guiding joint assembly can improve safety and efficiency of joint assembly and also joint reliability..

The invention provides an online monitoring data acquisition and analysis system for key parameters of a planetary rolling mill, which can display key technical parameter information in the operation process of rolling equipment in real time and can be analyzed for decision-making analysis, which includes a rolling mill lubrication system, a rolling mill cooling system, an inert gas Protection system, mandrel temperature measurement and cooling water detection system in rolling area, smart meter, data storage module, data transmission module and data analysis and summary module; The key parameters on the equipment are collected in real time, and the collected data is analyzed and processed to form a database, which is convenient for the enterprise to connect to the production situation and grasp the production cost in real time, and provides strong scientific data support for the enterprise's production decision-making.