In this paper, it is described the vibration problems in machining the impeller blades of high temperature alloy and some Solution about Vibration Problems at present.Then in allusion to vibration and low efficiency in machining the impeller blades of high temperature alloy, a new and stiffness adjustable damper is designed according to extrusion mode. And we compose the performance of magnetorheological elastomers and the operating mode of magnetorheological elastomers. Then we experiment on the damper which we have designed using the test systems which has been erected. The experiments show that we can suppress the vibration through changing the current. And when the coil windings of magnetorheological elastomer damper are set as current, the stiffness of magnetorheological elastomer damper is adjusted and the vibration is suppressed. Therefore,we can suppress the vibration through changing the current. And the magnetorheological damper can meet the design requirements.

A non-linear flow channel implementation method in magnetic gap space of magneto-rheological valve is proposed in this paper. The involved magneto-rheological valve in the method has a non-line flow channel which is formed by magnetic gap space between oil inlet disc and oil distribution disc, the concentric annular trapezoidal concave of the surface of the oil inlet disc, the concentric annular trapezoidal convex of the surface of the oil distribution disc, the corresponding convex and concave trapezium between the inlet oil disc and the oil distribution disc, the surface of oil distribution disc and oil inlet disc. The method is beneficial, because the maximum magneto-rheological effect is produced by placing the magneto-rheological fluid in the magnetic field whose intensity is maximum and not more than magneto-rheological fluid saturation intensity, and the magneto-rheological fluid channel length is lengthen in the limited space of the magnetic gap, we can further poly-magnetic by using of separated magnetic sheeting under condition of taking full advantage a limited poly-magnetic cross-section of the magnetic field. The method can significantly enhance the magneto-rheological fluid pressure difference under the same magneto-rheological fluid and flow requirements, size requirements, response time requirements and energy requirements.

The ground penetrating radar and radar wave propagation in the subsurface environment is very complex. All kinds of noise and clutter interference is very serious, and detection echo data is a variety of with clutter. Therefore, the key techniques of data processing is to suppress clutter processing of ground penetrating radar record data. Surfacelet transform can efficiently capture and represent local surface singularities with different sizes. In order to improve the reliability of 3D ground penetrating radar detection results and accuracy, this paper presents a three-dimensional ground penetrating radar signal denoising method based on Surfacelet transform. Using Surfacelet transform and 3D context model for ground penetrating radar (GPR) analog signal to denoising, the noise in the case of low signal noise ratio (SNR) still can obtain a better result, and the simulations prove the effectiveness of the method.

In order to overcome shortcomings of traditional hydraulic control valve, the variable non-linear flow channel method and device is proposed, which can make magneto-rheological fluid channel in the magnetic gap space variable non-linear. In the magnetic gap space setting separated magnetic pressure tablets make magneto-rheological fluid non-line fluid along the separated magnetic pressure tablets, so the magneto-rheological fluid channel length is lengthen and it can increase the utilization of a limited magnetic line. Under the condition of magnetic gap size fixedness, improving pressure difference size of controllable fluid of magnetic fluids can achieve goals of energy conservation and reducing the size of magneto-rheological valves.

This paper brings forward a flexible fixture system based on magneto-rheological fluid. It is a holding and positioning device that has flexible surface of change rigidity by using current and magneto-rheological fluid valve to control variety of rigidity. It can adapt all kinds of rigidity and shape holding objects, the stress is adapted to object surface of any shape. Flexible fixture based on magneto-rheological fluid has simple structure and faster execution action and lower cost relative to pure mechanical control system. The simulation results are shown that the fixture system has better positioning precision and clamping effect. The fixture device can be applied in many domains.