Hardware-in-the-loop experimental platform for vehicle semi-active suspension based on electromagnetic vibration table

Abstract

The invention relates to a vehicle semi-active suspension hardware-in-the-loop test platform of an electromagnetic vibrating table, comprising a real-time simulation platform, an electromagnetic vibration test system, an interface circuit and a drive power supply of a magneto-rheological damper. The real-time simulation platform includes host machine, target machine and data acquisition card; the electromagnetic vibration test system includes the base of the shaking table, electromagnetic vibration generator, guide rod, U-shaped fixture of the upper mount, U-shaped fixture of the lower mount, displacement sensor, Force sensor, acceleration sensor, magneto-rheological damper, beam, screw and power amplifier; the interface circuit includes SCSI100-pin connection line, angle female terminal board, displacement sensor output signal conditioning circuit, force sensor output signal conditioning circuit and limiter Circuit; the drive power supply of the magnetorheological damper includes a programmable power supply and an RS232 serial port transmission line. The invention adopts an electromagnetic vibration test system to simulate road surface excitation, and the test platform occupies a small space, has low running noise, stable running and convenient maintenance.

Description

Technical field [0001] The invention relates to a vehicle suspension system, in particular to a vehicle semi-active suspension hardware-in-the-loop test platform based on an electromagnetic vibration table Background technique [0002] Magnetorheological damper has the advantages of large output damping force, wide adjustment range, low power consumption, etc. The semi-active suspension system using magnetorheological damper can select the optimal suspension system damping ratio according to different driving conditions, thus taking into account Vehicle driving comfort and handling stability. [0003] The hardware-in-the-loop experiment is to establish a simulation model through a real-time processor to simulate the operating characteristics of the controlled object. The I / O interface is connected to the actual hardware system to achieve data transmission, and then a comprehensive system-level test is performed. It is physically compatible with the traditional vehicle electronic co...

AI Technical Summary

Problems solved by technology

[0004] A small number of scientific research institutes in China have established a hardware-in-the-loop experimental platform for semi-active suspension systems, but there are mainly the following shortcomings: First, the suspension hardware structure is too complicated, such as using weights as sprung masses, adding coil springs or tires, Even if an approximate suspension assembly structure is designed, it is still unable to simulate the actual suspension system. In fact, except for the key controllable damper in the semi-active suspension system, other components can be linearized in the simulation model. Second, the real-time simulation system uses solutions provided by dSPACE or NI. However, due to the diversity of the hardware structure of the system platform, the simulation system needs customized modules, which prolongs the development cycle and increases the cost. Third, most of them use hydraulic pressure. The vibration table provides road excitation, the equipment occupies a large area, requires high maintenance, and is more expensive than the electromagnetic vibration table; Fourth, due to the complex hardware system structure and integrated real-time simulation system, the system test items are single , even with a variety of test functions, it is necessary to change the hardware structure of the system, and the convenience of system operation is not strong

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