Vehicle semi-active suspension hardware-in-loop experimental platform based on electromagnetic vibration table

Abstract

The invention relates to a vehicle semi-active suspension hardware-in-loop experimental platform based on an electromagnetic vibration table. The vehicle semi-active suspension hardware-in-loop experimental platform comprises a real-time simulation platform, an electromagnetic vibration testing system, an interface circuit and a magnetorheology damper driving power supply. The real-time simulation platform comprises a host machine, a target machine and a data collecting card. The electromagnetic vibration testing system comprises a vibration table base, an electromagnetic vibration generator, a guiding rod, an upper mounting base U-shaped clamp, a lower mounting base U-shaped clamp, a displacement sensor, a force sensor, an accelerator sensor, a magnetorheology damper, a horizontal beam, a screw rod and a power amplifier. The interface circuit comprises an SCSI100 needle connecting wire, a bent angle female base wiring plate, a displacement sensor output signal processing circuit, a force sensor output signal processing circuit and an amplitude limiting circuit. The magnetorheology damper driving power supply comprises a program control power supply and an RS232 serial port transmission line. The electromagnetic vibration testing system is used for simulating road excitation, and the testing platform is small in occupied space, low in operation noise, stable in operation and convenient to maintain.

Description

technical field [0001] The present 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] The magnetorheological damper has the advantages of large output damping force, wide adjustment range, and low power consumption. The semi-active suspension system using the magnetorheological damper can choose the optimal damping ratio of the suspension system according to different driving conditions, so as to take into account the Vehicle ride 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 realize data transmission, and then a comprehensive system-level test is carried out. Compared with the development proce...

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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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