栅极腐蚀在线测量技术项目建议书(编辑修改稿)

栅极腐蚀在线测量技术项目建议书(编辑修改稿)内容摘要：

北京和德宇航技术有限公司 China Head Aerospace Technology Co. Page： 10/31 3 Customer requirements 用户需求 Introduction 引文 The Lanzhou Institute of Physics aims at the measurement of the grid erosion produced on 1 kWclass ion engines to be placed in a dedicated new vacuum chamber and subjected to long duration tests. Accuracy, easiness of use, and reliability of the system are the key requirements that will be detailed in the next sections. 510 所旨在测量其专有的新型真空灌内 1kW 级等离子发动机所产生的栅极腐蚀，并进行长期测试。 操作的精确 、 可靠 、 简易和系统的可靠是关键要求，详见一下章节。 Detailed customer requirements 客户详细要求 R01 Target thruster grid dimensions 目标推进器栅极尺寸 The erosion measure should be made on grids up to 300 mm in diameter. The grids will not be plane, but curved. 对直径达 300mm的栅极进行腐蚀测量，栅极不非平面而是曲面。 R02 – Primary erosion measurement 初始腐蚀测量 The primary erosion measurement will be concerned with the hole erosion on the external grid (a dimension change of few percentage points should be considered as target for the minimum detectable erosion). 初始腐蚀测量主要涉及的是外部栅极的孔腐蚀（最小可测腐蚀应考虑到几个百分点的外形变化）。 R03 – Secondary erosion measurement 二次腐蚀测量 Pitgroove erosion should also be measured, if possible (if patible with resolution and illumination). 如可以也应测量坑槽腐蚀 （如果符合分辨率与光照条件） R04 – Additional Feature 附加特性 If possible, the ESM software should allow a posteriori reconstruction of a 3D image from two separate pictures taken with slightly different angle of the camera(s). 如果可以， ESM软件通过两张角度略有差别的图像可后期合成 3D 图像。 R05 Type of thruster 推进器类型 The used thruster will be a Gridded Ion Engine. 栅极离子发动机 R06 – Thruster dimensions and weight 推进器尺寸与重量 The thruster diameter will be less or equal to 300 mm. 北京和德宇航技术有限公司 China Head Aerospace Technology Co. Page： 11/31 The thruster weight will be less or equal to 10 kg. 尺寸 ≤300mm 重量 ≤10kg R07 – Environmental requirements 环境要求 The EMS should be patible with the IPL laboratory environmental requirements, summarized below: EMS 应满足 510 所实验室的环境要求： o Vacuum degree: 1x103 Pa to1x102 Pa。 o Cleanliness level: laboratory。 o Temperature: 040 176。 C。 o Humidity: 1060 %。 o Available power: 220 V AC 真空度： 1x103 Pa to1x102 Pa； 洁净度：实验室； 温度： 040 176。 C； 湿度： 1060 %； 可用电源： 220V AC R08 – Vacuum chamber requirements 真空罐要求 The EMS should be used in a new vacuum chamber, 2 m in diameter for about 5 m in length, described in the scheme of Figure 5 and Figure 6. 真空罐直径 2m，长约 5m，见图 5， 6。 Figure 1 Top view: the two DN100 flanges in the red box can be used by ALTA 图 1 顶视图： ALTA可利用红框内的 2 个 DN100 凸缘 北京和德宇航技术有限公司 China Head Aerospace Technology Co. Page： 12/31 1 液氮储供系统 2 副舱真空容器 3 推力器热控装置 4 安装电源专用副舱 5 主舱真空容器 6 真空抽气系统 7 地面 氙供气单元 8 离子推力器地面供电电源 9 电推进控制系统 10 真空抽气和推力器温控控制系统 11 冷却水系统 12 气动元件供气系统 Figure 2 Side view: the three DN100 flanges in the red box can be used by ALTA 图 2 侧视图： ALTA可利用红框内的 3 个 DN100 凸缘 13 液氮进出接口 14 推力器安装架 北京和德宇航技术有限公司 China Head Aerospace Technology Co. Page： 13/31 15 主舱电、气接口 16 主舱真空容器 17 真空规接口 18 鞍座 19 离子束靶 R09 – Mechanical interface with the vacuum chamber 与真空罐机械接口 Alta should clarify the required mechanical interface between the EMS and the vacuum facility. Alta 确定 EMS 与真空罐之间的机械接口。 R10 – Electrical interfaces 电接口 The electrical ponents, including wires and cables, should be patible with high voltage operation. In particular, the expected peak voltage is about 1500 V and the max peak current is 12A. The electrical ponents should be certified for at least 2500 V operation. 电组件，含电线电缆，应能适应高压工作。 最高电压约为 1500V，最大电流 12A，电 组件应至少能承受 2500V的电压。 R11 – Feedthroughs, connectors, and flanges 馈入装置，连接器和凸缘 The feedthroughs for the erosion measuring system stand should be realized in patibility with the available flanges (Figure 6). 腐蚀测量系统的馈入装置应符合可用凸缘（图 6）。 R12 – Control software requirements 控制软件要求 The control software provided with the EMS, should be capable of: o Perform atmospheric and invacuum preliminary setup (“calibration”) o Provide measurement of erosion in terms of circle diameters, linear length, depth of grooves/pits (not in realtime). o Provide alarms and possible information on recovery actions in case of EMS failures. o Being provided with highly automated procedures. o Being provided with extensive User Manual. o Being realized with easiness of use as key requirement. EMS 配有的控制软件应：  可在大气压下和真空中进行初始安装（ “校准 ”）。  可测量腐蚀的圆圈直径，线性长度，坑 /槽处深度（非实时）。  EMS 一旦故障，发出警报，提供修复相关信息。  程序高度自动化。 北京和德宇航技术有限公司 China Head Aerospace Technology Co. Page： 14/31  全面的用户手册。  操作简便。 R13 – Control software source code 控制软件源代码 An option in the quotation should be present concerning the possibility of purchasing the control software source code, to be able to independently modify it in the future. 可购买控制软件源代码，以便日后可自行修改。 R14 – Operation requirements 运行要求 The EMS should be capable to operate and withstand the thruster derived temperature level, ining heat flux, and backsputtered particles when placed in safe position. The EMS calibration procedures should be rapid. EMS 不受推进器引起的温度升高，热流和回溅的影响，仍可正常运行。 EMS校准程序迅速。 R15 – Reliability and Service Life 可靠性与使用寿命 The EMS should be capable of withstanding very long times in vacuum (several consecutive months) with sporadic operation. The EMS expected service life should be 8 years, if possible, including options for regular maintenance and availability of spare parts. A set of basic failure。