Research On Shaftless Drive Printing Machine Synchronization Control System

With the development of computer and electron technology, shaftless driventechnology becomes mature. Due to its good performance, shaftless driven printingmachine is widely used in printing industry. Shaftless driven printing system which isdifferent with tradition printing system is a class of nonlinear and strong couplingmulti-axis synchronization control system. The aberration adjusting and syschronizationcontrol of multi-axis running must be taking into accout in shaftless driven printing system.The multi-axis coordination control directly influences the reliability and control accuracyof the system, so research on shaftless drive printing synchronization control system has avital significance.This thesis, according to the excellent performance of shaftless driven technology,indicates shaftless driven printing machine will gradually take the place of traditionmechanical master driven printing machine and is widely used in printing industry. Thenafter making analysis of the operating principle and characteristic of shaftless drivenprinting machine, the thesis make exploratory study on aberration adjusting andsynchronization control. As for the aberration adjusting, owing to the uncertainly,hysteresis and oscillation of system and limitations of PID, fuzzy control and neuralnetwork control are discussed and the fuzzy neural network controller is designed. Thismethod takes advantage of the FNN’s merits, such as the capability of nonlinear,adaptation, self-learning, even the capability of uncertain knowledge representation andlogic reasoning, that make the system got strong self-adaptive and robust. Finally, thesegment control of FNN and Bang-Bang is proposed in order to improve the fast-trackingperformance of the system in the large deviation. In the aspect of synchronous control ofthe system, after discussing several synchronization control strategy, according to thefeather of multi-axes’strong coupling, deviation coupling control strategy is choosed. And then, improvement approach is proposed. Synchronization performance of the system isimproved by adjusting the proportion of the synchronous deviation in the couplingdeviation.The shaftless driven printing machine synchronization control system is simulated inMATLAB, and the results of simulation prove that the synchronization control strategyand control algorithm proposed in this thesis improve tracking performance andsynchronization performance which can fit the target of the research.