Environmental tests of the HXI spectrometer for the ASO-S mission

Chen, Dengyi; Hu, Yunfeng; Zhang, Zhe; Zhang, Yan; Zhang, Yongqiang; Guo, Jian‐Hua; Huang, Yong-Yi; Ma, Tao; Chang, Jin

doi:10.1088/1748-0221/15/10/t10008

Cited by 11 publications

(2 citation statements)

References 8 publications

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“…Referring to the already existing design of the Integrated Starter/Generator (ISG) motor, the article selects the rated speed as 2000 r min À1 . [20,35,36] Since the ratio of the motor maximum speed to the rated speed is usually taken as 2-3, the top speed of the motor is selected as 6000 r min À1 to make the speed match better. The rated power of the motor is 30 kw.…”

Section: Electric Power Modelmentioning

confidence: 99%

Electrohydraulic Power Switching Control for Mechatronics–Electrohydraulic Power Coupling Electric Vehicles Considering Optimal Speed Thresholds

Yang

Zhang²,

Hong

2023

Energy Tech

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Switching between different working modes customarily brings sudden changes in torque and speed, leading to energy wastage for mechatronics‐electro‐hydraulic power coupling electric vehicles. Investigating the effect of vehicle speed thresholds on operating mode switching when working in concert with compound energy sources is timely. Thus, under the constraint of a known reference path, the optimal threshold is determined by weighing the path tracking accuracy and economic performance with the vehicle speed and the accumulator pressure as control variables. Wherein the constraint relationship between the factors is fully elucidated by combining various typical and actual road conditions. The validation results indicate a positive correlation between the starting acceleration capacity and the threshold value for a certain accumulator volume. The optimal speed thresholds under new European driving cycle, China light‐duty vehicle test cycle‐passenger, and actual routes are 4.1, 3.81, and 3.66 m s−1, with state of charge consumption rates of 6.30%, 8.56%, and 4.25%, respectively. More frequent speed switching may lead to excessive hydraulic power wastage, thereby increasing dependence on electrical power. Appropriate threshold setting can effectively enhance path tracking accuracy and hydraulic utilization under unpredictable road conditions. This research may in the future provide theoretical support for the rational control and interconstraint mechanism of energy utilization in hybrid vehicles.

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Section: Electric Power Modelmentioning

confidence: 99%

Electrohydraulic Power Switching Control for Mechatronics–Electrohydraulic Power Coupling Electric Vehicles Considering Optimal Speed Thresholds

Yang

Zhang²,

Hong

2023

Energy Tech

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“…The PMT, R1924A-100, produced by Hamamatsu Ltd, uses a super bi-alkali cathode to ensure good energy resolution. Three layers of perm-alloy foils cover the PMT, reducing the influence on gain variation by the magnetic field [6,10]. The base circuit for PMT is to maintain linearity and gain stability at a high event rate, and relevant tests can refer to [11].…”

Section: Jinst 17 P05045mentioning

confidence: 99%

Pre-launch characterization of the spectrometer of Hard X-ray Imager (HXI) onboard the ASO-S mission

Liu¹,

Zhang²,

Wu³

et al. 2022

J. Inst.

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As one of the three payloads of the Advanced Space-based Solar Observatory (ASO-S), the pre-launch characterization of HXI includes the characterization of the collimator and the spectrometer. This article focuses on the pre-launch characterization of HXI's spectrometer, including detection efficiency, energy resolution, and energy to ADC channel (E-C) relationship. The detection efficiency characterization necessitates a sufficient number of calibrated energy points in the HXI observation energy range, with a refined measurement around the absorption edge of the lanthanum bromide crystal, and is calibrated with an X-ray beam. The characterization results are consistent with the simulations and show that the detection efficiency difference between detector modules is controlled within ±3%. Radioactive sources 133Ba and 137Cs are used to calibrate the energy resolution and E-C relationship. The characterization results show that all detector modules' energy resolutions are better than 26% at 32 keV, meeting the design specification. And their E-C relationships vary regularly with voltage. All of the characterization results indicate that the flight model of the HXI spectrometer meets the performance requirements and is capable of performing on-orbit observation activities.

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The Hard X-ray Imager (HXI) on the Advanced Space-based Solar Observatory (ASO-S)

Zhang

Gan

et al. 2022

Handbook of X-Ray and Gamma-Ray Astrophysics

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Environmental tests of the HXI spectrometer for the ASO-S mission

Cited by 11 publications

References 8 publications

Electrohydraulic Power Switching Control for Mechatronics–Electrohydraulic Power Coupling Electric Vehicles Considering Optimal Speed Thresholds

Electrohydraulic Power Switching Control for Mechatronics–Electrohydraulic Power Coupling Electric Vehicles Considering Optimal Speed Thresholds

Pre-launch characterization of the spectrometer of Hard X-ray Imager (HXI) onboard the ASO-S mission

The Hard X-ray Imager (HXI) on the Advanced Space-based Solar Observatory (ASO-S)

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