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9th IEEE Conference on Industrial Electronics and Applications (ICIEA)

作者： Diao, Yanhua Zhang, Xiuqing Li, Meng Wang, Xiaojun Hebei Univ Sci & Technol Dept Informat Sci & Engn Shijiazhuang Peoples R China

ISBN: (纸本)9781479943159

Crystal oscillator disciplined system based on digital phase locked loop (PLL) technology, using satellite signals output 1 Pulse Per Second (1PPS) local oscillator signal tame, so as to obtain high-precision time and frequency standards. Firstly, using MATLAB simulation for GPS tracking signal, through Kalman filtering and application performance analysis, adaptive filtering coefficients obtained crystal tame and dimension x then, in the case of different parameters pi algorithm for the simulation for the existence of a competitive relationship between the various performance indicators to optimize the coefficient of the Proportion Integration (pi) algorithm x finally, combining the Kalma filtering and pi algorithm to filter and adjust phase. The test result shows that, Kalman filtering and pi algorithm combines technology effectively filter out signal noise, the excellent long-term stability characteristics of a standard satellite receiver seconds pulses generated with excellent short-term stability oven controlled crystal characteristics combined, solving local crystal oscillator aging, long term stability in accuracy and poor performance issues, system output frequency accuracy up nanosecond (ns), finally got the short and long term have a high stability, high precision frequency reference and time synchronization standard source.

关键词： Crystal Oscillator Phase-Locked Loop Kalman Filter pi algorithm

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Design of an integrated energy management strategy for a plug-in hybrid electric bus

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JOURNAL OF POWER SOURCES 2020年第0期448卷 227391-000页

作者： Fan, Likang Zhang, Youtong Dou, Haishi Zou, Runnan Beijing Inst Technol Low Emiss Vehicle Res Lab Beijing 100081 Peoples R China Beijing Inst Technol Natl Engn Lab Elect Vehicles Beijing 100081 Peoples R China

The performance of Plug-in Hybrid Electric Vehicle (PHEV) depends on the energy management strategy (EMS). An optimal EMS guarantees the maximum use of the energy through electric power grid, coordinates power output of main power sources and exerts comprehensive advantages of both engine and motor. However, the current EMS cannot react to the dynamic driving cycles in the future and thus have a bad real-time performance. In order to solve these problems, a novel EMS based on rule-based energy strategy (RE), dynamic programming algorithm (DP) and equivalent fuel consumption algorithm (ECMS) is proposed. First, DP is used to extract the boundary of mode switching and shift schedule under three typical driving cycles in offline, especially, RE is corrected using the boundary of mode switching. Second, an instantaneous optimization strategy-ECMS is used to replace the Charge-Depleting Mode (CD) of RE for finding the real-time optimal solution in a wider range in online, in this part, owe to the fixed distance of urban public transport, a reference State of Charge (SOC) is formulated, and the Proportion-Integration (pi) algorithm is used to make the actual SOC always follow the reference SOC by adjusting the equivalent factor. Finally, combine all the above efforts, a real-time optimization EMS is proposed and validated through simulation and experiment. The results show that this approach can significantly enhance the vehicle drivability, with overall obvious improvement of the comprehensive performance qualification based on both fuel economy and drivability.

关键词： Plug-in hybrid electric vehicle (PHEV) Energy management Drivability Control strategy Equivalent consumption minimization strategy (ECMS) Dynamic programming (DP) pi algorithm

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Z-source Inverter of PV Ship Grid-connected Based on Robust Control

International Core Journal of Engineering

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International Core Journal of Engineering 2021年第2期7卷 212-222页

作者： Yupan Fang Shihong Gan Weifeng Shi

Applying photovoltaic power generation system to the ship's power grid will reduce the pollution of ship to the ocean. In order to improve the efficiency and quality of photovoltaic power generation on board the ship, In this paper, robust control is used in DC side, and Z-source capacitor voltage outer loop control and current inner loop control are used in AC side, The robust controller and regulator are designed to realize the fast tracking of grid-connected current. At the same time, active damping technology is also used on the grid side to suppress the resonance of the LCL filter, which improves the reliability of the ship grid-connected system. Finally, simulations verify the correctness and effectiveness of the theory.

关键词： Grid Structure Z-Source Inverter PV Grid-Connected Robust Control pi algorithm

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ADP-based active optimal fault-tolerant control for modular manipulator with multiple sensor failure

ADP-based active optimal fault-tolerant control for modular ...

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Chinese Automation Congress (CAC)

作者： Li, Bing Fang, Tao Zhou, Fan Dong, Bo Li, Yuanchun Changchun Univ Technol Dept Control Sci & Engn Changchun Peoples R China Chanchun Univ Sci & Techonlgy Dept Elect Informat Engn Changchun Peoples R China

ISBN: (纸本)9781728140940

In this paper, we propose a novel active fault-tolerant control (AFTC) method for modular manipulators with multiple sensor failure, which is based on adaptive dynamic programming (ADP). Combining the principle of diffeomorphism, a first-order filter is introduced to convert sensor faults into pseudo-actuator faults. Combine the sensor faults estimated by the adaptive sensor fault observer to establish the Hamilton-Jacobi-Bellman (HJB) equation. Based on the ADP, the online policy iteration (pi) algorithm is applied to solve the HJB equation by establishing a critic neural network. It is proved that the closed-loop modular manipulators system is asymptotic stability according to the Lyapunov theory. Simulation results of 2-DOF modular manipulator systems with two configurations demonstrate the validity of the proposed algorithm finally.

关键词： adaptive dynamic programming fault-tolerant control modular manipulators pi algorithm critic neural network

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The Research on Control System of pipeline Dredging Robot based on Simulink

The Research on Control System of Pipeline Dredging Robot ba...

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作者： Jiman Luo Lulu Dai Shenyang Jianzhu University

In order to control the new pipe dredging robot more accurately and ensure the stable operation of the robot in the harsh environment, the motion control system of the robot is designed and the pi algorithm based on double closed-loop speed control system for walking unit of wheeled mechanism is studied. According to the Simulations by Simulink and experimentations of the above control methods, it was indicated that the motor speed can be stabilized at the set speed value under the disturbance of load change, and the dynamic performance is also stable. Finally, a double closed-loop speed control system with strong anti-load fluctuation capability is adopted. The control method satisfied the requirements of the working condition of the robot in a complex environment and realized that the precise control of the motion state of the robot.

关键词： pipe dredging robot pi algorithm double closed loop control control system

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Design of Automatic Following and Locating Electric Carrier Based on Ultrasonic Positioning and pi Controller

Design of Automatic Following and Locating Electric Carrier ...

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2017 2nd International Conference on Mechatronics and Information Technology(ICMIT 2017)

作者： Junyang Tang Jundi Wang Weipeng Lu Dongdong Chen Nanjing Foreign Language School

Ultrasonic devices have lots of uses in many fields, but they are rather limited in the indoor positioning fields. In order to solve the problems of the present ultrasonic positioning devices, this paper illustrates an Ultrasonic Positioning and Analysis System for Automatic following and Locating Electric Carrier called UPASAFLEC in short. This paper adopts the least squares optimization method together with pi control. Highly accurate measurement and precise speed control are the advantages. This paper will mainly go through the design of the software and hardware of the UPASAFLEC and prove it useful with some experiments.

关键词： ultrasonic positioning automatic following and locating pi algorithm intelligent universal wheels the least squares optimization method

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DC-link capacitor voltage control for single-phase shunt active power filter with step size error cancellation in self-charging algorithm

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IET POWER ELECTRONICS 2016年第2期9卷 323-335页

作者： Zainuri, Muhammad Ammirrul Atiqi Mohd Radzi, Mohd Amran Mohd Soh, Azura Che Mariun, Norman Abd Rahim, Nasrudin Univ Putra Malaysia Dept Elect & Elect Engn Fac Engn Serdang 43400 Selangor Malaysia Univ Malaya Power Energy Dedicated Adv Ctr Kuala Lumpur Malaysia

This study presents an improved self-charging algorithm by introducing a new feature known as step size error cancellation for better performance of DC-link capacitor voltage control in single-phase shunt active power filter (SAPF). Previous works of self-charging algorithms were focused only for steady-state operation by using either proportional-integral (pi) or fuzzy logic control (FLC). However, in a certain operation of any power system, dynamic operation may also happen. Thus, by introducing step size error cancellation as an additional feature to the self-charging algorithm, both steady state and dynamic operations can be covered. For evaluation and comparison analysis, self-charging with pi and FLC algorithms have been developed too. All the algorithms were simulated in MATLAB-Simulink, respectively, together with the single-phase SAPF. For hardware implementation, the proposed algorithm was programmed in TMS320F28335 digital signal processing board. The other two conventional self-charging algorithms were also programmed for comparison purposes. From the results and analysis, the proposed self-charging with step size error cancellation shows the best performance with high accuracy, fast response time and less overshoot and undershoot. It performs well in both steady state and dynamic operations as compared with both previous self-charging techniques which only work well in steady-state operation.

关键词： pi control fuzzy control digital signal processing chips control engineering computing power engineering computing power harmonic filters power capacitors voltage control active filters DC-link capacitor voltage control single-phase shunt active power filter step size error cancellation self-charging algorithm single-phase SAPF power system steady state operation dynamic operation pi algorithm FLC algorithm MATLAB-Simulink TMS320F28335 digital signal processing board performance assessment

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Optimization and Realization of Anti-interference algorithm to Navigation Receiver

Optimization and Realization of Anti-interference Algorithm ...

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CIE International Conference on Radar (RADAR)

作者： Chen, Li-wen Zheng, Jian-sheng Fujian Univ Technol Key Lab Automot Elect & Elect Drive Fujian Prov Fuzhou 350108 Fujian Peoples R China Wuhan Univ Elect & Informat Sch Wuhan 430072 Hubei Peoples R China

ISBN: (纸本)9781509048281

In this paper, we discuss how to protect satellite signals from strong interference signals The power inversion (pi) algorithm has been widely used in interference suppression. However, both the interference and the satellite signals are significantly suppressed. Therefore, we further optimized the satellite steering vector and interference steering vector using a multi-star, forming pi approach. To verify the superiority of the new method, we designed an anti-interference hardware platform that includes a seven-element antenna array, a radio frequency (RF) front-end module, a field-programmable gate array (FPGA), and a digital signal processor (DSP)to compare the two algorithms. Using the hardware platform, we compare the traditional pi algorithm to our proposed optimized algorithm using the following three metrics: simulation waveform, direction of arrival (DOA), and positioning. The results show that our method can suppress interference from satellites, resulting in better efficiency than the pi algorithm.

关键词： GNSS receiver pi algorithm Multi-pi algorithm Hardware Platform

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Flight control system for quad-rotor aircraft based on improved integral separation piD

Flight control system for quad-rotor aircraft based on impro...

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2016 4th International Conference on Machinery,Materials and Information Technology Applications(ICMMITA 2016)

作者： TIAN Hongpeng LI Lei School of Xi'an University of Science and Technology

Quad-rotor aircraft can be widely used in military and civilian fields, and it is drawing a great deal of attention. Combining with pi algorithm and quaternion method, this article resolves the aircraft flight attitude and complete aircraft attitude control with improved integral separation piD control algorithm. At last, conventional piD controller, integral separation controller and improved integral separation controller are simulated in the environment of MATLAB and compared with each other. The result shows that the response rate of improved integral separation piD is faster than the conventional integral separation algorithm and the overshoot volume is also lower.

关键词： quad-rotor aircraft pi algorithm quaternion method piD control algorithm

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Research on the Application of Intelligent Decoupling Control Method in the Process Control System

Research on the Application of Intelligent Decoupling Contro...

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International Conference on Mechatronics and Semiconductor Materials (ICMSCM 2013)

作者： Qin, Jian Wei, Chunguang Yantai Nanshan Univ Expt Ctr Elect & Informat Longkou Peoples R China

ISBN: (纸本)9783037859391

There is a universal coupling in process control system, especially with the development of science and technology, industry system has became more and more big, the control process is more complicated, the variables which need to solve are also gradually increased. Therefore between the variables in the associated process produce coupling. In order to solve the coupling problems, we introduced pi self- adjusting fuzzy control model in the link of decoupling, and designed the model and the algorithm of decoupling with decoupling controller. The experiment showed that, after the introduction of pi algorithm, the time when the system reaches a steady is greatly reduced, saving time and cost. Also there is no coupling between the two signals, which shows that pi algorithm successfully reaches the decoupling in the process control.

关键词： intelligent decoupling industrial system fuzzy control pi algorithm adaptive model process control

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