Experiment platform and experiment method for virtual loading and controlling of engineering mechanical work conditions

Abstract

The invention discloses an experiment platform and an experiment method for virtual loading and controlling of engineering mechanical work conditions. The experiment platform comprises a movable support, an oil tank, a driving hydraulic loop, a reciprocating loading loop, a rotary loading system and an experiment platform measuring and controlling system. The measuring and controlling system is internally provided with various engineering mechanical models, load spectrums in the operation process of the measuring and controlling system are converted into electric signals through an industrial personal computer to be output to an electromagnetic proportional overflow valve in a reciprocating loading loop or a magnetic powder brake in the rotary loading system through practical working condition simulation, and therefore force and torque loading of a hydraulic cylinder or a hydraulic motor in the driving hydraulic loop is achieved. Closed-loop rotation speed control is conducted on a permanent magnet synchronous motor of a driving system with the combination of running states of a system, and pressure and flow in the system are adjusted. According to the experiment platform and the experiment method for the virtual loading and controlling of the engineering mechanical work conditions, development of the experiment platform in a laboratory environment with the combination of the engineering practice is achieved, the practical engineering significance is achieved, operation is convenient, and the secondary development capacity is achieved.

Description

technical field [0001] The invention relates to the field of engineering machinery control, in particular to an experimental platform for virtual loading and control of operating conditions of engineering machinery and an experimental method thereof. Background technique [0002] Modern construction machinery is a complex of electromechanical and hydraulic integration and an integration of automation information. The speed of the working mechanism of construction machinery is relatively slow, but the output force or torque is large, the speed is high when running without load, and frequent speed changes and direction changes are required during the working process, so more than 95% of construction machinery at home and abroad use hydraulic pressure. Transmission, in order to facilitate large torque, large inertia load requirements and automatic control. The operating environment of construction machinery is complex and changeable, and its objects and loads change drasticall...

AI Technical Summary

Problems solved by technology

[0006] 2) Chinese patent (patent application number: CN201410430823.8), which proposes a hydraulic test bench system, which tests hydraulic cylinders in combination with oil temperature, and does not involve load simulation of working conditions

[0007] 3) Chinese patent (patent application number: CN201110042582.6), which proposes a controllable load spectrum hydraulic loading method and its loading device, does not involve the rotary loading system

[0008] 4) Chinese patent (patent application number: CN201010176051.1), which proposes a hydraulic cylinder test device and experimental method for simulating working conditions, only for hydraulic cylinder performance testing, and does not involve control technology

[0010] To sum up, from the domestic patent application documents that have been found, there is no research on the variable speed control technology of construction machinery by virtual loading for the operation process of construction machinery

Images