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Bolted joints are widely used in CNC machine tools and the presence of joint interface results in discontinuities in the local stiffness and damping of the structure, which affects the dynamic characteristics of CNC machine tools. This paper focuses on identification techniques for the nonlinear characteristics of bolted joints from experimental perspectives: (1) Time-domain methods and frequency-domain...
This paper is based on the dynamics characteristics of the air-cylinder; develop the air-cylinder piston wear ring axial deflection with LuGre model, then use the MATLAB to simulate the axial deflection and get the relevance between axial deflection and cycles. Meanwhile, set up the air-cylinder piston durability experimental platform, achieve a large number of data and compared with simulation data,...
In this paper, a new technology of power steering for in-wheel-motor driven electric vehicles has been developed. Through controlling the driving torque of the two in-wheel traction motors, a proper power steering assist torque can be generated, which can be used to compensate the assist steering torque generated by hydraulic pump or direct power steering motor, or even completely make them unnecessary...
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