The control design, based on self-adaptive PID with genetic algorithms(GA) tuning on-line was investigated, for the temperature control of industrial microwave drying rotary device with the multi-layer(IMDRDWM) and wi...The control design, based on self-adaptive PID with genetic algorithms(GA) tuning on-line was investigated, for the temperature control of industrial microwave drying rotary device with the multi-layer(IMDRDWM) and with multivariable nonlinear interaction of microwave and materials. The conventional PID control strategy incorporated with optimization GA was put forward to maintain the optimum drying temperature in order to keep the moisture content below 1%, whose adaptation ability included the cost function of optimization GA according to the output change. Simulations on five different industrial process models and practical temperature process control system for selenium-enriched slag drying intensively by using IMDRDWM were carried out systematically, indicating the reliability and effectiveness of control design. The parameters of proposed control design are all on-line implemented without iterative predictive calculations, and the closed-loop system stability is guaranteed, which makes the developed scheme simpler in its synthesis and application, providing the practical guidelines for the control implementation and the parameter design.展开更多
A new searching algorithm named the annealing-genetic algorithm(AGA) was proposed by skillfully merging GA with SAA. It draws on merits of both GA and SAA ,and offsets their shortcomings.The difference from GA is that...A new searching algorithm named the annealing-genetic algorithm(AGA) was proposed by skillfully merging GA with SAA. It draws on merits of both GA and SAA ,and offsets their shortcomings.The difference from GA is that AGA takes objective function as adaptability function directly,so it cuts down some unnecessary time expense because of float-point calculation of function conversion.The difference from SAA is that AGA need not execute a very long Markov chain iteration at each point of temperature, so it speeds up the convergence of solution and makes no assumption on the search space,so it is simple and easy to be implemented.It can be applied to a wide class of problems.The optimizing principle and the implementing steps of AGA were expounded. The example of the parameter optimization of a typical complex electromechanical system named temper mill shows that AGA is effective and superior to the conventional GA and SAA.The control system of temper mill optimized by AGA has the optimal performance in the adjustable ranges of its parameters.展开更多
频率调谐方法可以有效解决因耦合机构参数漂移导致的无线电能传输系统频率失谐问题,有利于提高系统的传输效率及运行稳定性。传统的双边频率调谐控制方法不统一,并且控制参数优化复杂。为此,该文提出一种适用于高阶补偿无线电能传输系...频率调谐方法可以有效解决因耦合机构参数漂移导致的无线电能传输系统频率失谐问题,有利于提高系统的传输效率及运行稳定性。传统的双边频率调谐控制方法不统一,并且控制参数优化复杂。为此,该文提出一种适用于高阶补偿无线电能传输系统的通用调谐解耦控制策略。首先,基于电路理论构建高阶补偿无线电能传输系统的分析模型,揭示双边谐振条件及其特征。其次,基于扰动观察法构建一种通用的双边调谐解耦控制策略,可实现原边和副边谐振参数的自适应调整。最后,搭建180 W LCC/LCC系统实验样机,验证了所提频率调谐解耦控制策略的有效性,在耦合机构偏移等工况下能够有效维持系统双边的谐振状态,提高了系统的传输效率和稳定性。展开更多
基金Project(51090385) supported by the Major Program of National Natural Science Foundation of ChinaProject(2011IB001) supported by Yunnan Provincial Science and Technology Program,China+1 种基金Project(2012DFA70570) supported by the International Science & Technology Cooperation Program of ChinaProject(2011IA004) supported by the Yunnan Provincial International Cooperative Program,China
文摘The control design, based on self-adaptive PID with genetic algorithms(GA) tuning on-line was investigated, for the temperature control of industrial microwave drying rotary device with the multi-layer(IMDRDWM) and with multivariable nonlinear interaction of microwave and materials. The conventional PID control strategy incorporated with optimization GA was put forward to maintain the optimum drying temperature in order to keep the moisture content below 1%, whose adaptation ability included the cost function of optimization GA according to the output change. Simulations on five different industrial process models and practical temperature process control system for selenium-enriched slag drying intensively by using IMDRDWM were carried out systematically, indicating the reliability and effectiveness of control design. The parameters of proposed control design are all on-line implemented without iterative predictive calculations, and the closed-loop system stability is guaranteed, which makes the developed scheme simpler in its synthesis and application, providing the practical guidelines for the control implementation and the parameter design.
文摘A new searching algorithm named the annealing-genetic algorithm(AGA) was proposed by skillfully merging GA with SAA. It draws on merits of both GA and SAA ,and offsets their shortcomings.The difference from GA is that AGA takes objective function as adaptability function directly,so it cuts down some unnecessary time expense because of float-point calculation of function conversion.The difference from SAA is that AGA need not execute a very long Markov chain iteration at each point of temperature, so it speeds up the convergence of solution and makes no assumption on the search space,so it is simple and easy to be implemented.It can be applied to a wide class of problems.The optimizing principle and the implementing steps of AGA were expounded. The example of the parameter optimization of a typical complex electromechanical system named temper mill shows that AGA is effective and superior to the conventional GA and SAA.The control system of temper mill optimized by AGA has the optimal performance in the adjustable ranges of its parameters.
文摘频率调谐方法可以有效解决因耦合机构参数漂移导致的无线电能传输系统频率失谐问题,有利于提高系统的传输效率及运行稳定性。传统的双边频率调谐控制方法不统一,并且控制参数优化复杂。为此,该文提出一种适用于高阶补偿无线电能传输系统的通用调谐解耦控制策略。首先,基于电路理论构建高阶补偿无线电能传输系统的分析模型,揭示双边谐振条件及其特征。其次,基于扰动观察法构建一种通用的双边调谐解耦控制策略,可实现原边和副边谐振参数的自适应调整。最后,搭建180 W LCC/LCC系统实验样机,验证了所提频率调谐解耦控制策略的有效性,在耦合机构偏移等工况下能够有效维持系统双边的谐振状态,提高了系统的传输效率和稳定性。
