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汽车控制器软件开发模式调研

汽车实用技术 2021年第1期46卷 63-66页

作者：张可可周沛泽合肥工业大学汽车与交通工程学院安徽合肥230009 安徽江淮汽车集团股份有限公司技术中心安徽合肥230601

当前汽车智能化、网联化、电动化趋势明显,国内整车厂对汽车电子软件重视度逐渐提高,整车厂也开始着手参与到控制器软件开发过程中。文章调研分析了当前常用的几种汽车电子软件开发模式,从整车厂的角度出发,基于软件开发、软件迭代、软... 详细信息

当前汽车智能化、网联化、电动化趋势明显,国内整车厂对汽车电子软件重视度逐渐提高,整车厂也开始着手参与到控制器软件开发过程中。文章调研分析了当前常用的几种汽车电子软件开发模式,从整车厂的角度出发,基于软件开发、软件迭代、软件维护三个过程评价不同模式的优缺点,并提出汽车电子软件架构的改进方向应为如何在不使用配置工具的情况下,降低底层软件的开发难度,提高应用层软件以及底层软件的可移植性和可剪裁性。

关键词：汽车控制器软件开发模式汽车电子软件架构

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一种手写代码转换为Matlab模型的研究

汽车实用技术 2018年第22期44卷 46-48页

作者：马培义王烨徐瑞雪王祺明朱成周沛泽安徽江淮汽车集团股份有限公司安徽合肥230601

文章首先对开发背景进行简单介绍,在此基础上,着重介绍如何实现将手写代码转换为Matlab建模语言,并将生成的代码与底层接口函数进行集成、编译、刷写到TCU中,用CANape标定工具对控制程序进行调试和测试,经对测试结果的分析,验证了该方... 详细信息

文章首先对开发背景进行简单介绍,在此基础上,着重介绍如何实现将手写代码转换为Matlab建模语言,并将生成的代码与底层接口函数进行集成、编译、刷写到TCU中,用CANape标定工具对控制程序进行调试和测试,经对测试结果的分析,验证了该方法功能正确,满足要求,可以应用。

关键词：手写代码接口调用

Two-body exceptional points in open dissipative systems

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Chinese Physics B 2022年第1期31卷 51-55页

作者： peize Ding Wei Yi CAS Key Laboratory of Quantum Information University of Science and Technology of ChinaHefei 230026China CAS Center For Excellence in Quantum Information and Quantum Physics Hefei 230026China

We study two-body non-Hermitian physics in the context of an open dissipative system depicted by the Lindblad master *** a minimal lattice model of a handful of interacting fermions with single-particle dissipation,we show that the non-Hermitian effective Hamiltonian of the master equation gives rise to two-body scattering states with state-and interaction-dependent parity-time *** resulting two-body exceptional points can be extracted from the trace-preserving density-matrix dynamics of the same dissipative system with three *** results not only demonstrate the interplay of parity-time symmetry and interaction on the exact few-body level,but also serve as a minimal illustration on how key features of non-Hermitian few-body physics can be probed in an open dissipative many-body system.

关键词： non-Hermitian physics parity-time symmetry open system Lindblad equation

Microscopic defects formation and dynamic mechanical response analysis of Q345 steel plate subjected to explosive load

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Defence Technology（防务技术） 2024年第2期32卷 430-442页

作者： Zhengqing zhou Zechen Du Yulong Zhang Guili Yang Ruixiang Wang Yuzhe Liu peize Zhang Yaxin Zhang Xiao Wang Research Institute of Macro-Safety Science University of Science and TechnologyBeijing100083China School of Civil and Resource Engineering University of Science and TechnologyBeijing100083China China North Industry Advanced Technology Generalization Institute Beijing100089China College of Field Engineering PLA Army Engineering UniversityNanjing210007China School of Mechanical Engineering Nantong UniversityNantong226019China

As the basic protective element, steel plate had attracted world-wide attention because of frequent threats of explosive loads. This paper reports the relationships between microscopic defects of Q345 steel plate under the explosive load and its macroscopic dynamics simulation. Firstly, the defect characteristics of the steel plate were investigated by stereoscopic microscope(SM) and scanning electron microscope(SEM). At the macroscopic level, the defect was the formation of cave which was concentrated in the range of 0-3.0 cm from the explosion center, while at the microscopic level, the cavity and void formation were the typical damage characteristics. It also explains that the difference in defect morphology at different positions was the combining results of high temperature and high pressure. Secondly, the variation rules of mechanical properties of steel plate under explosive load were studied. The Arbitrary Lagrange-Euler(ALE) algorithm and multi-material fluid-structure coupling method were used to simulate the explosion process of steel plate. The accuracy of the method was verified by comparing the deformation of the simulation results with the experimental results, the pressure and stress at different positions on the surface of the steel plate were obtained. The simulation results indicated that the critical pressure causing the plate defects may be approximately 2.01 GPa. On this basis, it was found that the variation rules of surface pressure and microscopic defect area of the Q345 steel plate were strikingly similar, and the corresponding mathematical relationship between them was established. Compared with Monomolecular growth fitting models(MGFM) and Logistic fitting models(LFM), the relationship can be better expressed by cubic polynomial fitting model(CPFM). This paper illustrated that the explosive defect characteristics of metal plate at the microscopic level can be explored by analyzing its macroscopic dynamic mechanical response.

关键词： Explosive load Q345 steel Micro defect Finite element simulation Dynamic response Data fitting

Radio Propagation and Wireless Coverage of LSAA-Based 5G Millimeter-Wave Mobile Communication Systems

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China Communications 2019年第5期16卷 1-18页

作者： Haiming Wang peize Zhang Jing Li Xiaohu You School of Information Science and Engineering Southeast UniversityNanjing 211111China State Key Laboratory of Millimeter Waves Southeast UniversityNanjing 211111China National Mobile Communications Research Laboratory Southeast UniversityNanjing 211111China

Millimeter-wave(mm Wave) communications will be used in fifth-generation(5G) mobile communication systems, but they experience severe path loss and have high sensitivity to physical objects, leading to smaller cell radii and complicated network architectures. A coverage extension scheme using large-scale antenna arrays(LSAAs) has been suggested and theoretically proven to be cost-efficient in combination with ultradense small cell networks. To analyze and optimize the LSAA-based network deployments, a comprehensive survey of recent advances in statistical mmWave channel modeling is first presented in terms of channel parameter estimation, large-scale path loss models, and small-scale cluster models. Next, the measurement and modeling results at two 5G candidate mmWave bands(e.g., 28 GHz and 39 GHz) are reviewed and compared in several outdoor scenarios of interest, where the propagation characteristics make crucial contributions to wireless network designs. Finally, the coverage behaviors of systems employing a large number of antenna arrays are discussed, as well as some implications on future mmWave cellular network designs.

关键词： fifth generation (5G) channel modeling large-scale antenna array(LSAA) millimeter wave(mmWave) communications radio propagation measurements wireless coverage

Determination of related substances in disulfide-rich peptide ziconotide by establishing tandem mass spectrometry methods

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Journal of Pharmaceutical Analysis 2024年第10期14卷 1535-1537页

作者： Yuya Cheng peize Wu Peng Xiao Ming Li Division of Chemical Metrology&Analytical Science National Institute of MetrologyBeijing100029China

Currently,several disulfide-rich peptides have been officially approved as therapeutic medicines,such as w-conotoxin ziconotide[1],guanosine analogue linaclotide,and *** are predisposed to generate related substances(also termed as structurally related impurities)including amino acid deletion/insertion,diastereoisomerization,deamination/amination,oxidation,and succinimidation etc.

关键词： disulfide establishing insertion

Intergranular corrosion behavior and mechanism of the stabilized ultra-pure 430LX ferritic stainless steel

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Journal of Materials Science & Technology 2019年第8期35卷 1787-1796页

作者： peize Cheng Ning Zhong Nianwei Dai Xuan Wu Jin Li Yiming Jiang Department of Materials Science Fudan University Shanghai 200433 China Institute of Marine Materials Science and Engineering Shanghai Maritime University Shanghai 201306 China

Intergranular corrosion(IGC) behavior of the stabilized ultra-pure 430 LX ferritic stainless steel(FSS) was investigated by using double loop electrochemical potentiokinetic reactivation(DL-EPR) and oxalic acid etch tests to measure the susceptibility of specimens given a two-step heat treatment. The results reveal that IGC occurs in the specimens aged at the temperature range of 600–750℃ for a short time. The aging time that is required to cause IGC decreases with the increase of aging temperature. A longer aging treatment can reduce the susceptibility to IGC. The microstructural observation shows that M(23)C6 precipitates form along the grain boundaries, leading to the formation of Cr-depleted zones. The presence of Cr-depleted zones results in the susceptibility to IGC. However, the atoms of stabilizing elements replace chromium atoms to form MC precipitates after long-time aging treatment, resulting in the chromium replenishment of Cr-depleted zones and the reduction of the susceptibility to IGC.

关键词： Intergranular corrosion Ferritic stainless steel Double loop electrochemical potentiokinetic reactivation (DL-EPR) TEM Cr-depleted zone

Analysis of quaternary digital chaotic sequence performance based on chaotic matrix

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High Technology Letters 2021年第1期27卷 103-109页

作者： Li peize Zhao Bing Li Wenquan Laboratory of Electronic and Communication Engineering Heilongjiang UniversityHarbin 150080P.R.China

With good randomness and high sensitivity to initial values,chaotic sequences have been extensively used in secure *** chaotic sequences are highly sensitive to initial *** is an analog quantity in the domain of attraction,which is not conducive to the transmission of digital *** order to improve the stability,real chaotic sequences can be quantized into digital chaotic *** to the relationship between the information rate and the symbol rate,the symbol rate of binary sequence is the same as the information *** information rate can be doubled by quantizing a real-valued sequence into a quaternary *** chaotic sequence has weak ***,the periodicity of binary digital chaotic sequences is much weaker than that of quaternary chaotic *** with the multi-dimensional chaotic map,the one-dimensional chaotic map has small key space and low *** this paper,a new real-valued chaotic sequence is generated based on the chaotic matrix method constructed by Logistic map and Kent *** quantization methods are used to digitize the real-valued chaotic sequence to obtain the quaternary digital chaotic ***,the randomness,the time series complexity and the correlation of the new quaternary chaotic sequence are compared and *** simulation results demonstrate that the quaternary digital chaotic sequence obtained by the chaotic matrix has good randomness and correlation.

关键词： chaotic matrix digital chaotic sequence randomness

In-building coverage of millimeter-wave wireless networks from channel measurement and modeling perspectives

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Science China(Information Sciences) 2020年第8期63卷 5-20页

作者： peize ZHANG Cheng YI Bensheng YANG Cheng-Xiang WANG Haiming WANG Xiaohu YOU State Key Laboratory of Millimeter Waves Southeast University National Mobile Communications Research Laboratory Southeast University

To progress cost-effective deployment of millimeter-wave(mm Wave) wireless networks for indoor users, the prediction of indoor-to-indoor(I2I) and outdoor-to-indoor(O2I) coverage based on field measurement studies is of great interest to the future generation mobile communication system. First, measurements in I2I and O2I scenarios, which have advantages in terms of achieving a fair comparison of channel characteristics across different mm Wave bands and bandwidths, are performed. Next, the developed dual-slope path loss model with a break-point distance is found to well fit omnidirectional and directional measured I2I data, especially at 39.5 GHz, revealing that the transition from lit or shadow regions to totally blocked regions is abrupt. Combined with space-time propagation characteristics, the indoor blockage effect on path loss and angular spread is investigated, therein being essential for the design of beam-steering and tracking algorithms. Double-directional measurement results show that most dominant paths arrive along the line-ofsight path, and only a few in-building reflections can be detected in higher frequency bands. Based on the joint analysis of channel measurement and modeling results, several mm Wave network design and in-building coverage enhancement insights are presented.

关键词： building entry loss channel modeling in-building coverage millimeter-wave communication propagation measurements