中国科学院机构知识库网格系统: 检索

Controller Optimization for Multirate Systems Based on Reinforcement Learning 期刊论文 OAI收割
International Journal of Automation and Computing, 2020, 卷号: 17, 期号: 3, 页码: 417-427
作者: Zhan Li; Sheng-Ri Xue; Xing-Hu Yu; Hui-Jun Gao

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收藏 | 浏览/下载：12/0 | 提交时间：2021/02/22

Multirate system reinforcement learning policy iteration optimal control controller optimization.

Accurate Classification of EEG Signals Using Neural Networks Trained by Hybrid Population-physic-based Algorithm 期刊论文 OAI收割
International Journal of Automation and Computing, 2020, 卷号: 17, 期号: 1, 页码: 108-122
作者: Sajjad Afrakhteh; Mohammad-Reza Mosavi; Mohammad Khishe; Ahmad Ayatollahi

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收藏 | 浏览/下载：21/0 | 提交时间：2021/02/22

Brain-computer interface (BCI) classification electroencephalography (EEG) gravitational search algorithm (GSA) multi-layer perceptron neural network (MLP-NN) particle swarm optimization.

A Linear Quadratic Controller Design Incorporating a Parametric Sensitivity Constraint 期刊论文 OAI收割
International Journal of Automation and Computing, 2019, 卷号: 16, 期号: 4, 页码: 553-562
作者: Mohamed Yagoubi

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收藏 | 浏览/下载：16/0 | 提交时间：2021/02/22

Linear quadratic control parametric uncertainties trajectory sensitivity non-standard Riccati equation Lur'e matrix equations linear time invariant (LMI) particle swarm optimization.

Short Term Wind Speed Prediction Using Multiple Kernel Pseudo Inverse Neural Network 期刊论文 OAI收割
International Journal of Automation and Computing, 2018, 卷号: 15, 期号: 1, 页码: 66-83
作者: S. P. Mishra; P. K. Dash

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收藏 | 浏览/下载：13/0 | 提交时间：2021/02/23

Wind speed prediction pseudo inverse neural network kernel ridge regression nonlinear kernels firefly optimization.

Application of Fractional Order PID Controller for AGC Under Deregulated Environment 期刊论文 OAI收割
International Journal of Automation and Computing, 2018, 卷号: 15, 期号: 1, 页码: 84-93
作者: Nagendra Kumar; Barjeev Tyagi; Vishal Kumar

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收藏 | 浏览/下载：20/0 | 提交时间：2021/02/23

Automatic generation control (AGC) deregulation Big Bang Big Brunch (BBBC) algorithm fractional order proportional integral derivative (FOPID) controller optimization.

Determination of optimum process parameters in gas-assisted injection molding (EI CONFERENCE) 会议论文 OAI收割
2011 International Conference on Electrical Information and Mechatronics, ICEIM2011, December 23, 2011 - December 25, 2011, Jiaozuo, China
Zi K.; Chen L.

收藏 | 浏览/下载：20/0 | 提交时间：2013/03/25

With finite element analysis software Moldflow numerical simulation and studies about FM truck roof handle were conducted on gas-assisted injection molding process. The influences of melt pre-injection shot gas pressure delay time and melt temperature were observed by using multi-factor orthogonal experimental method. According to the analysis of the factors' impact on evaluation index the optimized parameter combination is obtained. Therefore the optimization design of technological parameters is done. The results show that during the gas-assisted injection molding optimum pre-injection shot is 94% gas pressure is 15MPa delay time is 0.5s melt temperature is 240 C. This study provided a more practical approach for the gas-assisted injection molding process optimization.

Surface shape optimization for the space membrane reflector (EI CONFERENCE) 会议论文 OAI收割
2011 International Conference on Electronic and Mechanical Engineering and Information Technology, EMEIT 2011, August 12, 2011 - August 14, 2011, Harbin, China
作者: Zhang Y.; Zhang P.

收藏 | 浏览/下载：23/0 | 提交时间：2013/03/25

Space membrane reflector is very promised for optical quality application with the merits of ultra-lightweight and flexible. In order to improve the surface precision of membrane reflectors the formation and surface shape error of a membrane at uniform load are studied based on the henky-cambell equations of circular membrane. The ANSYS software is used to build an optimization model of membrane reflector surface shape in which the yield strength is the state variable the surface load on ten concentric annular regions of the mirror is the design variable and the minimum RMS between ideal surface and mirror surface is the target function. and the theoretical and experimental result show that RMS and PV of the optimized surfaces are reduced respectively than those before optimization. In a word this paper offers the theoretical and experimental basis of the polyimide membrane reflector. 2011 IEEE.

Optimal design of strap-down inertial navigation support under random loads (EI CONFERENCE) 会议论文 OAI收割
2010 IEEE International Conference on Information and Automation, ICIA 2010, June 20, 2010 - June 23, 2010, Harbin, Heilongjiang, China
作者: Li M.

收藏 | 浏览/下载：29/0 | 提交时间：2013/03/25

In order to realize miniaturization and light weight of the strap-down inertial navigation system and then to make sure that it works well under random loads optimal design is applied to the strap-down inertial navigation support with the methods of topology optimization and size optimization. Firstly based on the installation requirement of devices and connection requirement of the support and the carrier the initial structure of the support is designed. Topology optimization with FEA software ANSYS is adopted on the initial structure to get the basic one. Then 5 critical sizes are chosen as design variables and the support structure is optimized by means of size optimization to reach light weight with satisfying the requirement of dynamic stiffness. Finally random vibration analysis is applied to the initial structure. In the mean time random vibration test is carried out to qualify the analysis method. After the qualification a random vibration analysis is applied to the optimized support structure to get the rms of displacement response and acceleration response of the support to validate whether the optimized structure is appropriate. The results indicate that the dynamic stiffness of the optimized support structure satisfies the design requirements and its weight is lighter 49.38% than that of the initial one. This research can be a reference to the structure design of supports under random loads and the result has been applied to the development and manufacture of a prototype aerocraft. 2010 IEEE.

Design and analysis of power system of micro-electromechanical actuator (EI CONFERENCE) 会议论文 OAI收割
2010 2nd International Conference on Industrial Mechatronics and Automation, ICIMA 2010, May 30, 2010 - May 31, 2010, Wuhan, China
作者: Zhang J.; Zhang J.; Zhang J.

收藏 | 浏览/下载：23/0 | 提交时间：2013/03/25

In order to apply the electromechanical actuator to tactical mini-missiles maximum rotational speed of output shafts is greater than 250/s. Test results basically correspond to the requirement of technical indexes. It is proved that this analysis and design method is congruent with the design of micro-electromechanical actuators this paper researches on the key technology such as load-bearing ability the system bandwidth can reach 25.3Hz on the condition of no load and 23.4Hz on the condition of load thus the method is feasible. 2010 IEEE. rapidity and miniaturization of the micro-electromechanical actuator power system based on the ball screw. First according to specific technical indexes the power electromechanical time constant and the size of the motors are screened originally through theoretical analysis. Finally based on the characteristics of ball screw transmission load locus of the micro-electromechanical actuator dynamic system is theoretically analyzed and the optimum speed ratio is determined through parameter optimization. The results of the double closed loop controlled test on the principle prototype show: the system can operate normally with 2.5N.m hinge moment

Performance Optimization for an Irreversible Quantum Stirling Cooler 期刊论文 OAI收割
JOURNAL OF THERMAL SCIENCE, 2002, 卷号: 11, 期号: 3, 页码: 193,197
Zhuming Huangl; Feng Wul; Lingen Chen2; Chih Wu3; Fangzhong Guo4

收藏 | 浏览/下载：10/0 | 提交时间：2013/03/12

Quantum Stirling cooler finite time thermodynamics non-equilibrium statistical mechanics optimization.