Investigation Into Dynamic Characteristics Of A Roller Washing Machine

In accordance with the demand from Xiao Ya Group Co. Ltd, this dissertation deals with the dynamic design of a rolling washing machine for the vibration and noise reduction. The parameters affecting the dynamic characteristics of the system are optimized and its effectiveness is verified via computer simultation and experiments The mains achievements and conclusions are summaried as follows.(1) According to the structure of rolling washing maching, its 6-dof dynamic model is formulated using the vector method with the consideration of real working condition. The vibration amplitude of outer barrel of washing machine is adopted as specification to investigate the law of key parts on it. The two balancing ways are also dicussed here in the running state, and the optimal balancing format is chosen by the comparison.(2) The virtual prototype technique is introduced, and process analysis on it is also studied here. The flow chart is drawn and multi-body modeling theorem is explained in the next which used in the commercial MSC. ADAMS software. Based on the above, the Pro/E and MSC. ADAMS is adopted to build the virtual prototype of washing machine for the research on its dynamic characterisitics.(3) The sensitivity analysis is investigated in order to achieve the influencing degree of different parameters on vibration amplitude of outer barrel of rolling washing machine. Furthermore, its mean square root value of vibration is used as cost function, and linear programming method is acquired to optimize the parameters of key parts.(4) The mechatronic model of rolling washing machine is established using the commercial Matlab/simulink and MSC. ADAMS software for futher investigation of its quality. The co-simulation is then finished in the simulink environment to achieve the law of controller parameters on dynamic characteristics of system.(5) The PC+NI USB9233 acquring board is utilized for hardware platform of experiment, and graphic language LabView is used for acquiring software. Based on this platform, the above theory and approaches are validated. The above researches, not only give guide to parameter design of key parts of roller washing machine, but also offer good theory gist for the development of physical prototype.