Research Of Pluse Generator For Microbial Products Manufacturing

With the development of economy and the improvement of the living standard, people pay more and more attention to the quality of the living environment. In everyday life, people have begun to care the use of biodegradable products whose main raw materials are the microbial polyester. So most scholars have started to study the production process of biodegradable products and found it can cause environmental pollution and low extraction rate by using the traditional extraction method of polyester particles which has used a lot of chemicals. Up to now, the scientists have found that we can reduce the use of chemicals in the production process and improve the extraction rate of available materials by using the pulse power technology.The relationship between the output pulse parameters and cell membrane perforation rate is analyzed and the optimum output pulse conditions are further defined in this thesis. In the basic of several high voltage pulse power supply topological structure which has been put forward by domestic and foreign scholars, the pulse power supply system is designed in the thesis which is applied to the extraction system of polyester particles. The module stacking technique is introduced in this high voltage circuit and continuous adjustment of output voltage is implemented by applying low overlay module. The IGBT of the main circuit can be controlled by employing control circuit which takes dsPIC30F3011as the core controller combined with other electronic devices such as the detection circuit and the drive circuit. The extraction process specificity and pulse power nonlinear are considered seriously in this thesis. The traditional PID control strategy combined with neural network control is used to realize memory control and real-time control for the power system through comparing the traditional PID with CMAC neural network control. At the same time, this control strategy still can improve the dynamic and static performance of pulse power system and the extraction rate effectively.For solving the questions of the high voltage pulse power,in main circuit,this thesis uses the module stacking technique;in control strategy,designing the PID with CMAC neural network. the results show that the output pulses of pulse power can meet the requirements of biological polyester particles extraction system and also prove its feasibility and reliability of the pulse power supply topology through the analysis of simulation and experiments.