4 results about "Kinetic coupling" patented technology

This invention relates to the field of agricultural machinery technology, specifically to a multibody dynamics coupling modeling method for a tractor's integrated transmission system that integrates tire-soil-implement interaction. The method includes constructing an initial multibody dynamics model comprising the engine, main and auxiliary gearboxes, transfer case, front and rear drive axles, and tires. By incorporating soil hardness, tire pressure, and implement parameters, and introducing tire-soil and implement-soil interaction models, the mechanical coupling between tires, implements, and soil is achieved. Through high-precision numerical solutions, the traction efficiency and energy consumption indicators of the tractor under different soil conditions and operating modes are obtained, thus providing theoretical support for tractor energy efficiency optimization and operating strategies. This invention, through global coupling modeling and high-precision simulation, can effectively improve the traction efficiency of the tractor transmission system, reduce energy consumption, and provide quantitative basis for optimized design, possessing broad engineering application value.

The application discloses a kind of energy consumption optimal cooperative speed planning methods for highway train, belong to intelligent transportation technical field.The method first obtains driving environment and vehicle parameter;Second, based on dynamic physical model, slope, wind resistance and other dynamic weight coefficients are calculated;Then, construct the joint objective function of fusion energy consumption, efficiency and safety, and load speed, spacing and formation sequence constraint, establish mixed integer programming model;Next, the nonlinear term in model is linearized to obtain standardization model;Finally, real-time optimization is solved using solver, and the speed, spacing and formation sequence of each vehicle are output to make the global energy consumption of formation optimal.The application overcomes the problem that the prior art lacks formation cooperation and has poor environmental adaptability, through multi-vehicle dynamics coupling and real-time optimization, realizes the joint cooperative planning of highway train speed and spacing in dynamic environment, and significantly reduces the overall transportation energy consumption.

A ground test method for space mechanical arm visual servo verification, the mechanical arm controller, the mechanical arm product, the camera product and the matched software and the like are all 100% involved in ground test verification, the simulation system is used to project the space mechanical arm plane motion to three-dimensional motion, the ground hardware test equipment is reduced, and the economic cost of test verification is reduced; the invention does not limit the mechanical arm motion speed, can carry out ground test verification according to the on-orbit real working condition input according to the overall task, and greatly improves the space-ground consistency of system test; the invention does not need to model the mechanical arm dynamics characteristics, eliminates the error caused by dynamics modeling or external mechanical arm dynamics coupling, and improves the space-ground consistency of dynamics motion equivalence.

The application discloses an airplane landing dynamic response equivalent test device and method of an airport runway bridge, and belongs to the technical field of airplane load bridges. The device comprises a lifting and dropping subsystem, a heading speed simulation subsystem, an adjustable attitude landing gear mounting clamp, a scaled landing gear verification test piece, a dynamic equivalent scaled bridge verification test piece and a multi-dimensional measurement subsystem. The application synchronously simulates the influence of multiple key factors, such as sinking speed, heading speed, landing mass and landing attitude angle, on the machine-bridge coupling dynamic response in the same physical test device; the scaled bridge is designed through the equivalent criterion of constant frequency ratio, so that the dynamic coupling characteristics are consistent with the original structure. The application fills the blank of the machine-bridge coupling physical verification means, can provide measured verification data for a numerical simulation model, and is suitable for the design and safety evaluation of airport runway bridges.