针对非线性Wiener模型的参数辨识问题,提出了一种基于Sigmoid函数及自适应算子改进差分进化(improved differential evolution algorithm with Sigmoid function and adaptive mutation operator,SADE)算法的参数辨识方法。利用Sigmoid...针对非线性Wiener模型的参数辨识问题,提出了一种基于Sigmoid函数及自适应算子改进差分进化(improved differential evolution algorithm with Sigmoid function and adaptive mutation operator,SADE)算法的参数辨识方法。利用Sigmoid函数及自适应变异算子改进了基本差分进化算法的变异操作部分,改进的方法能够有效地克服基本差分进化算法的过早收敛和不稳定性等缺点。将该改进差分进化算法应用于对非线性Wiener模型的参数辨识问题,达到了较高的辨识精度。在仿真试验中,与其它已有方法进行比较,仿真结果说明了所给的参数辨识方法是合理和有效的。展开更多
建立了电力系统经济调度模型,该模型以发电成本最小为目标,考虑了火电机组阀点效应和系统运行约束,并提出了求解该模型的饱和度自适应微分进化(saturation and adaptive differential evolution,SADE)算法。为避免算法搜索的盲目性,使...建立了电力系统经济调度模型,该模型以发电成本最小为目标,考虑了火电机组阀点效应和系统运行约束,并提出了求解该模型的饱和度自适应微分进化(saturation and adaptive differential evolution,SADE)算法。为避免算法搜索的盲目性,使算法既能集中于局部最优解又能兼顾全局最优解,引入了控制参数自适应调整策略和饱和度概念,该算法可避免"早熟"现象,收敛速度快。3机组、13机组和40机组算例结果验证了SADE算法的有效性。展开更多
Injection molding machine,hydraulic elevator,speed actuators belong to variable speed pump control cylinder system.Because variable speed pump control cylinder system is a nonlinear hydraulic system,it has some proble...Injection molding machine,hydraulic elevator,speed actuators belong to variable speed pump control cylinder system.Because variable speed pump control cylinder system is a nonlinear hydraulic system,it has some problems such as response lag and poor steady-state accuracy.To solve these problems,for the hydraulic cylinder of injection molding machine driven by the servo motor,a fractional order proportion-integration-diferentiation(FOPID)control strategy is proposed to realize the speed tracking control.Combined with the adaptive differential evolution algorithm,FOPID control strategy is used to determine the parameters of controller on line based on the test on the servo-motor-driven gear-pump-controlled hydraulic cylinder injection molding machine.Then the slef-adaptive differential evolution fractional order PID controller(SADE-FOPID)model of variable speed pump-controlled hydraulic cylinder is established in the test system with simulated loading.The simulation results show that compared with the classical PID control,the FOPID has better steady-state accuracy and fast response when the control parameters are optimized by the adaptive differential evolution algorithm.Experimental results show that SADE-FOPID control strategy is effective and feasible,and has good anti-load disturbance performance.展开更多
萨德(Marquis de Sade)的著作影响法国文坛至深,他对变态行为的描述无疑也是弗洛伊德(Sigmund Freud)的先驱。然而,萨德的变态幻想并不止于想象,而是背后有着某种坚定的意志支持。而拉康(Jacques Lacan)对萨德的阅读则试图找出这个晦涩...萨德(Marquis de Sade)的著作影响法国文坛至深,他对变态行为的描述无疑也是弗洛伊德(Sigmund Freud)的先驱。然而,萨德的变态幻想并不止于想象,而是背后有着某种坚定的意志支持。而拉康(Jacques Lacan)对萨德的阅读则试图找出这个晦涩力量背后的"理性"根据。在拉康眼中,萨德的《寝室里的哲学》(La philosophie dans le boudoir)不仅符合康德(Immanuel Kant)《实践理性批判》(Kritik der praktischen Vernunft)的理性精神,甚至补充并道出了其中的真理,因而彰显出其颠覆性的精华。于是,在精神分析所开启的欲望向度中,拉康让萨德和康德一起走在弗洛伊德的前面,让萨德继承了代表传统伦理学之转折点的康德,继而开启了精神分析的伦理学颠覆。而在拉康之前,萨德这个人的经验以及其著作的重要性从来没有以其伦理学面貌被发掘。本文随着拉康的阅读,一一检视萨德与康德彼此依存的一体性,道德律法与"绝爽"(jouissance)的关系,以及萨德的"二度死亡"(seconde mort)与弗洛伊德的"死亡欲力"玄想。展开更多
文摘针对非线性Wiener模型的参数辨识问题,提出了一种基于Sigmoid函数及自适应算子改进差分进化(improved differential evolution algorithm with Sigmoid function and adaptive mutation operator,SADE)算法的参数辨识方法。利用Sigmoid函数及自适应变异算子改进了基本差分进化算法的变异操作部分,改进的方法能够有效地克服基本差分进化算法的过早收敛和不稳定性等缺点。将该改进差分进化算法应用于对非线性Wiener模型的参数辨识问题,达到了较高的辨识精度。在仿真试验中,与其它已有方法进行比较,仿真结果说明了所给的参数辨识方法是合理和有效的。
文摘建立了电力系统经济调度模型,该模型以发电成本最小为目标,考虑了火电机组阀点效应和系统运行约束,并提出了求解该模型的饱和度自适应微分进化(saturation and adaptive differential evolution,SADE)算法。为避免算法搜索的盲目性,使算法既能集中于局部最优解又能兼顾全局最优解,引入了控制参数自适应调整策略和饱和度概念,该算法可避免"早熟"现象,收敛速度快。3机组、13机组和40机组算例结果验证了SADE算法的有效性。
基金National Natural Science Foundation of China(No.51675399)。
文摘Injection molding machine,hydraulic elevator,speed actuators belong to variable speed pump control cylinder system.Because variable speed pump control cylinder system is a nonlinear hydraulic system,it has some problems such as response lag and poor steady-state accuracy.To solve these problems,for the hydraulic cylinder of injection molding machine driven by the servo motor,a fractional order proportion-integration-diferentiation(FOPID)control strategy is proposed to realize the speed tracking control.Combined with the adaptive differential evolution algorithm,FOPID control strategy is used to determine the parameters of controller on line based on the test on the servo-motor-driven gear-pump-controlled hydraulic cylinder injection molding machine.Then the slef-adaptive differential evolution fractional order PID controller(SADE-FOPID)model of variable speed pump-controlled hydraulic cylinder is established in the test system with simulated loading.The simulation results show that compared with the classical PID control,the FOPID has better steady-state accuracy and fast response when the control parameters are optimized by the adaptive differential evolution algorithm.Experimental results show that SADE-FOPID control strategy is effective and feasible,and has good anti-load disturbance performance.
文摘萨德(Marquis de Sade)的著作影响法国文坛至深,他对变态行为的描述无疑也是弗洛伊德(Sigmund Freud)的先驱。然而,萨德的变态幻想并不止于想象,而是背后有着某种坚定的意志支持。而拉康(Jacques Lacan)对萨德的阅读则试图找出这个晦涩力量背后的"理性"根据。在拉康眼中,萨德的《寝室里的哲学》(La philosophie dans le boudoir)不仅符合康德(Immanuel Kant)《实践理性批判》(Kritik der praktischen Vernunft)的理性精神,甚至补充并道出了其中的真理,因而彰显出其颠覆性的精华。于是,在精神分析所开启的欲望向度中,拉康让萨德和康德一起走在弗洛伊德的前面,让萨德继承了代表传统伦理学之转折点的康德,继而开启了精神分析的伦理学颠覆。而在拉康之前,萨德这个人的经验以及其著作的重要性从来没有以其伦理学面貌被发掘。本文随着拉康的阅读,一一检视萨德与康德彼此依存的一体性,道德律法与"绝爽"(jouissance)的关系,以及萨德的"二度死亡"(seconde mort)与弗洛伊德的"死亡欲力"玄想。
