Based on a singleDOF vibration system with symmetric gap, in order to solve problems of slow simulation speed, and difficult to design tests, an electronic circuit with a full equivalent mathematical model was designed. The circuit consisted of simple electronic components, such as, operational amplifiers, resistances and capacitances. With the software MultiSim12.0, the simulation was done and the simulation results agreed well with those of numerical calculation. On the basis of simulation and designing nonlinear modules, the circuit board of PCB was made. Tests were conducted with devices of signal generator and oscillograph. The rationality and correctness of nonlinear vibration tests were further verified with the equivalent electronic circuit. It was shown that the circuit has excellent characteristics in high speed computing and dynamic parameter adjustment, they are incomparably beyond the characteristics of numerical simulation. The results provided a reference for simulation and tests of nonlinear systems.
Key words
Vibration system /
The equivalent electronic circuit /
Simulation /
Experiment
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References
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