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Sparse concentric ring arrays composed of aperiodic rings with elements equally spaced in each ring are capable of achieving circularly symmetric patterns with low sidelobe level (SLL) compared with the thinning concentric ring arrays. Here teaching learning based optimization (TLBO) algorithm which is based on stochastic optimization is first applied to synthesizing sparse concentric ring arrays...
To magnetic rheology damping existing device overheated, structural complicatedness, magnetic field utilization ratio low and problem of precipitating etc, accord with vehicle shock absorption proportional controlled for damping strength of damping device, design new-type magnetic rheology damping for vehicle that adopt external magnetic field bypass type and liquid one-way, and finish advanced development...
The control structure faces the impact vibrational state has the instantaneity and the unpredictability, the impact vibration magnitude and the duration has the wide range change, therefore the systems control design must grasp two key questions: One, analyzes according to the unique feature and the experience to attacks the vibrational state to carry on the graduation; Two, according to different...
The magnetic rheology damper existence to precipitate, superheat, the magnetic field efficiency low, service difficulty as well as the structure is complex, the high construction cost, and the low reliable, has affected the magnetic rheology damper project application and service life seriously. In order to realize the multi-degree of freedom vibration control, and overcomes precipitate and radiation...
In the construction machinery research and development design, the design of steering trapezium mechanism was essential. This article needed to discover one method that would realize fast to obtain the optimized design and the result output of steering trapezium in known wheelbase and vehicle tread and other design entity parameter situations. Through the wheel kinematics analysis in the steering...
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