Research On Embedded Dynamic Test System Based On DSP

With the development of production, the mechanical equipment are more efficient and more automatic, along with more stressful working intensity. Thus the equipment are turning more complicated and the relations between each parts much stronger. Even one small part's fault can possibly result in the whole machines set's breakdown. This means great economic loss , and what' more, human life is put in danger. Therefore, fault diagnosis of mechanical equipment has gained much attention. As one important part of fault diagnosis technologies, dynamic balancing technology is used to control the rotors' vibrating level, hence calming down the running situation and prolonging the working life of rotating machines. Based on the background given above, this dissertation studies the theories and technologies related with dynamic balancing , makes full use of DSP chip's wonderful computational performance, finally researches and designs a portable dynamic balancing system, simplifying the field dynamic balance of rotating machines. Besides, a new method named Order Tracking Based On Phase is presented, which realizes order tracking purely by software. This method simplifies the hardware set for dynamic balancing and has the definitude physical meaning.To begin with, the wide use of embedded technology and DSP related technology are reviewed. Secondly, the dynamic balance's fundamental and amplitude-phase influence coefficient method are studied and the latter will be applied into the system mentioned above. Then, because of vibrating signals' non-stationarity resulted from variable speed running of rotating machines, order analysis is introduced to the process of dynamic balance. Furthermore, in consideration of simplifying the hardware set, a new method named Order Tracking Based On Phase is presented. This method sets the constraint that the signal must be single-component. For almost all physical signals are multi-component, we need Local Wave method to decompose such signals to satisfy that constraint. At last, using C and DSP assembly languages, this dissertation finishes the embedded dynamic balancing test system based on DSP.