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2nd International Conference on control and Robot technology, ICCRT 2019

作者： Yan, Zheng Zhao, Wen-Jie Chen, Yong-Gang Zhang, Guo-Shuai Wan, Cheng-An Beijing Spacecraft China Aerospace Science and Technology Corporation Beijing Space Power Conversion and Control Engineering Research Center Beijing China

ISBN: (纸本)9781450372527

By analyzing the working characteristics of the battery discharge regulators on satellites and selecting the Weinberg converter as the topology of the main power stage, the basic principles of each operating mode of the Weinberg converter are given. The advantages of introducing the peak current control mode are analyzed theoretically. In order to analyze the stability of the battery discharge regulator, a small-signal model of the power stage and control stage based on the peak current mode under continuous inductor current conditions was established using the state space averaging method, and the loop gains of the current inner loop and the voltage outer loop were deduced, and gives compensator design method. Finally, a 600W battery discharge regulator was taken as an example to obtain the stability analysis results before and after system compensation. The correctness of the theoretical analysis was verified by the load mutation experiment. The control method of this paper can also be extended to the power system. © 2019 ACM.

关键词： power control

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A Simulation Study for a space Fuel Cell power System Based on Maximum power and State Machine control 2

A Simulation Study for a Space Fuel Cell Power System Based ...

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2nd International Conference on control and Robot technology, ICCRT 2019

作者： Jian, Liu Zhao, Wen-Jie Chen, Yong-Gang Liang, Ren Shuai, Guo Beijing Spacecraft China Aerospace Science and Technology Corporation Beijing Space Power Conversion and Control Engineering Research Center Beijing China

ISBN: (纸本)9781450372527

This paper takes a space fuel cell power system as a research subject, building its simulation model and conducting a simulation study of its operating status and control method. The simulation model built in this paper consists of a fuel-cell, a maximum power regulator, a storage battery, charging and discharging convertors and a system controller. The management strategy used in the system controller is state machine control. Combined with practical applications, aim at the conditions of load mutation and storage battery's charging and discharging, the main study of the load bus and maximum power regulator's output characteristics and storage battery's charging and discharging states has been conducted under the state machine management strategy. Simulation results have been analyzed according to the test conditions and verifying the efficiency of the simulation model and the control strategy. © 2019 ACM.

关键词： controllers

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research on High Reliable Aerospace Secondary power Supply Based on Resonant Reset Forward Converter 3

Research on High Reliable Aerospace Secondary Power Supply B...

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3rd International Conference on Electrical engineering and control Technologies, CEECT 2021

作者： Ji, Mingming Zhi, Shubo Shi, Junbiao Wu, Qiong Huang, Zhiqi Xie, Pengfei Beijing Spacecraft China Aerospace Science and Technology Corporation Beijing Space Power Conversion and Control Engineering Research Center Beijing100094 China

ISBN: (纸本)9781665440417

Compared with the ground secondary power supply, the aerospace secondary power supply puts forward higher requirements for reliability and safety. This research works to promote the safety and reliability requirements based on resonant reset forward converter. Firstly, the working process of resonant reset forward converter considering parasitic parameters was analyzed, the working mode and waveform were given in detail. Secondly, the parameters of resonant capacitor and excitation inductance were analyzed, which ensure reliable reset for excitation current of the transformer and the voltage spike, which satisfied the derating requirements of MOSFET. Thirdly, the selection and heat consumption of resonant reset capacitor were conducted, and an effective solution was proposed. Finally, a low-power power supply prototype was developed for further experimental analysis. Then the waves of key components were measured. The experiment results showed that reasonable parameters for the selection of resonant reset capacitor can ensure the effective reset of the excitation inductance for the transformer, reduce the peak of MOSFET, improve the EMI, reduce the voltage and thermal stress of the resonant capacitor which improve the reliability of the secondary power supply for aerospace. The converter technology based on resonant reset forward can satisfy the application requirements of high reliability and miniaturization of the aerospace secondary power supply, and will promote the technical accumulation and progress of aerospace power supply. © 2021 IEEE.

关键词： Reliability

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Design of a Sampling System for Wide Range nano-current Signal 4

Design of a Sampling System for Wide Range nano-current Sign...

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2022 4th International Conference on Energy Systems and Electrical power, ICESEP 2022

作者： Zheng, Sha Shi, Junbiao Chen, Yonggang Gui, Peng Liu, Wenyang Guo, Shuai Zhang, Yuhuan Beijing Spacecraft China Technology Corporation And Control Engineering Aerospace Science and Beijing Space Power Conversion Research Center Beijing100094 China

space particle radiation will greatly shorten the service life of basic components, resulting in premature failure of aircraft. For newly developed electronic components for space applications, strict anti irradiation performance evaluation must be carried out to master their working characteristics and performance degradation mechanism in space irradiation environment, so as to provide a reliable guarantee for the safe operation of aerospace electronic equipment in orbit. Taking high-voltage power devices such as SiC MOSFET and IGBT as the research object, this paper designs a high-precision weak current signal acquisition and measurement system to continuously monitor its working current under specific track applications, so as to verify the mechanism of space radiation effect and the effectiveness of reinforcement technology. The experimental results show that the system has the advantages of wide range, low noise, high precision and good stability. It can be applied to the experimental verification of high-voltage power devices in various space environments, including space station orbit. © 2022 Institute of Physics Publishing. All rights reserved.

关键词： Irradiation

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A Wide Duty Cycle Magnetic Isolation MOSFET Drive Circuit for Aerospace High-Reliability power Supply 2

A Wide Duty Cycle Magnetic Isolation MOSFET Drive Circuit fo...

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2nd International Conference on Smart power and Internet Energy Systems, SPIES 2020

作者： Jian-Chao, Wu Wen-Jie, Zhao Guo-Shuai, Zhang Beijing Space Power Conversion and Control Engineering Research Center Beijing Spacecraft China Aerospace Science and Technology Corporation Beijing100190 China

ISBN: (纸本)9781728166117

A magnetically isolated MOSFET driving circuit based on a driving transformer has been widely used in aerospace secondary power supplies. Based on the analysis of two typical magnetically isolated driving circuits, a new type of driving circuit is proposed. This circuit has the characteristics of zero negative voltage, high reliability, and wide duty cycle operating range. It is very suitable for a new generation of aerospace high-efficiency high-power-density power supply topology, and it has important significance for improving the efficiency of space borne secondary power supplies. © 2020 IEEE.

关键词： Timing circuits

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The modelling of stress assessment based on solid state electronic switch and research on it's safety characteristics 2

The modelling of stress assessment based on solid state elec...

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2nd International Conference on Smart power and Internet Energy Systems, SPIES 2020

作者： Li, Hui-Yao Zhao, Wen-Jie Wang, Cheng-An Zhou, Xin-Shun Ji, Zhi-Po Zhang, Bo-Lin Beijing Spacecrafts Co. Ltd Beijing Space Power Conversion and Control Engineering Research Center Beijing China

ISBN: (纸本)9781728166117

Based on the problem of non-matching of protective characteristics before and after the use of solid-state power distribution, this paper proposes a stress assessment model in the short-circuit mode of solid-state electronic switch, and realizes the calculation method of transient junction temperature of power semiconductor devices in the short-circuit mode. The parasitic parameters and influencing factors of the solid-state power distribution circuit are analyzed based on the whole satellite state. The solution of the front and back level protection characteristics matching is given to ensure the safety of the solid-state power distribution aerospace application, which has a strong guiding significance and application value. © 2020 IEEE.

关键词： Electric network analysis

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research on distributed intelligent distribution path architecture based on matrix switch 3

Research on distributed intelligent distribution path archit...

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3rd International Academic Exchange Conference on Science and technology Innovation, IAECST 2021

作者： Shi, Junbiao Ji, Mingming Zheng, Sha He, Xiong Chen, Yoga Huang, Zhiqi Beijing Spacecraft China Technology Corporation and Control Engineering Aerospace Science and Beijing Space Power Conversion Research Center Beijing100094 China

ISBN: (纸本)9781665402675

The existing aerospace power supply and distribution system is difficult to deal with the fault of a single machine in real time, and the timeliness is difficult to ensure. If the fault with potential serious harm cannot be isolated and dealt with in time, the best period of fault treatment will often be missed. In this paper, a satellite intelligent distribution path architecture based on matrix switch is proposed. Through the effective combination of solid-state power switch, interface circuit, current sensor and host computer software, the switch in the matrix is controlled to realize the construction of distribution path and active management of power energy flow under the distributed architecture. Combined with the functional requirements of the distribution channel defined by the traditional hardware and the application characteristics of the new architecture, the design and application experience of the new matrix distribution channel architecture in the aspects of satellite distribution flexibility, intelligence, fault diagnosis and omni-directional operation information monitoring of pre judged power supply and distribution system are summarized, it provides technical reference and theoretical support for the innovation of flexible and intelligent distribution system defined by subsequent software. © 2021 IEEE.

关键词： Interface states

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research on power Supply control technology between Multiple spacecraft 2

Research on Power Supply Control Technology between Multiple...

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2nd International Conference on Electrical engineering and control Science, IC2ECS 2022

作者： Meng, Xiaomai He, Xiong Shi, Junbiao Li, Wang Ren, Liang Liu, Mi Beijing Spacecrafts Beijing100190 China Beijing Space Power Conversion and Control Engineering Research Center Beijing100190 China

ISBN: (纸本)9798350399165

With the development of Chinese space technology, spacecrafts combination system is constantly established. Solar panels of some spacecraft are blocked due to orbital attitude and space position, which leads to insufficient power generation capacity and difficulty in meeting load requirements. Therefore, the power supply system between multiple spacecraft is established to improve the power utilization rate of each spacecraft and ensure the stable operation of the system. In this paper, an energy supply technology suitable for multiple spacecraft is proposed, which mainly includes high-power isolation and transformation, efficient grid-connected power supply, bidirectional energy control, on-orbit voltage and current regulation. © 2022 IEEE.

关键词： spacecraft

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Progressive prediction method for failure data with small sample size

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航空动力学报 2011年第9期26卷 2049-2053页

作者： WANG Zhi-hua FU Hui-min LIU Cheng-rui Research Center of Small Sample Technology Beijing University of Aeronautics and Astronautics Beijing 100191 China Science and Technology on Space Intelligent Control Laboratory Beijing Institute of Control Engineering Beijing 100191 China

The small sample prediction problem which commonly exists in reliability analysis was discussed with the progressive prediction method in this *** modeling and estimation procedure,as well as the forecast and confidence limits formula of the progressive auto regressive(PAR) method were discussed in great *** model not only inherits the simple linear features of auto regressive(AR) model,but also has applicability for nonlinear *** application was illustrated for predicting the future fatigue failure for Tantalum electrolytic *** results of PAR model were compared with auto regressive moving average(ARMA) model,and it can be seen that the PAR method can be considered good and shows a promise for future applications.

关键词： failure data forecast system reliability small sample progressive prediction nonlinear system

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research on Active Disturbance Rejection control technology of Two-wheel Self-balancing Robot 5

Research on Active Disturbance Rejection Control Technology ...

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5th International Conference on Electrical engineering and control Technologies, CEECT 2023

作者： Liu, Wenyang Zhang, Bo Guo, Shuai Shi, Junbiao Ji, Mingming Zheng, Sha Control Engineering Aerospace Science and Beijing Space Power Conversion Research Center Dept.Beijing Spacecraft China Technology Corporation Beijing China

ISBN: (纸本)9798350342253

The two-wheel self-balancing robot has the advantages of small size and flexible operation, but it is an inverted pendulum system with electromechanical integration, which has the characteristics of nonlinearity, strong coupling, and many random disturbances. The overshoot returns to the equilibrium point. In this paper, an active disturbance rejection control method combining a PD controller and linear extended state observer is studied, and the simulation analysis and verification experiment of this control system are carried out. The experimental results show that the control system can estimate the external disturbance, so that the self-balancing robot can quickly track to the equilibrium position without overshooting, and has strong robustness and anti-interference ability. © 2023 IEEE.

关键词： Wheels

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