在轨机器人自主装配大型结构时，微重力下的动力学控制难点在哪里？
In on-orbit robotic autonomous assembly of large structures, where do the dynamics-control difficulties lie under microgravity?
太空中无重力支撑，机械臂与目标件之间作用力会反作用于自身引起整体漂移，且大柔性结构在扰动下持续振动难以快速衰减。控制需在零基座位姿扰动、柔体振动抑制与视觉伺服之间协调，对建模精度与实时性要求很高。
With no gravity to react against, interaction forces between the arm and the workpiece push the whole base around, and large flexible structures keep vibrating under disturbance with slow decay. Control must coordinate zero-disturbance base attitude, flexible-vibration suppression, and visual servoing, demanding high model accuracy and real-time performance.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-11-03
来源 · Source
Chaumette 与 Hutchinson，《Visual Servo Control, Part I: Basic Approaches》，IEEE Robotics & Automation Magazine（2006）
Chaumette & Hutchinson, 'Visual Servo Control, Part I: Basic Approaches', IEEE Robotics & Automation Magazine (2006)
独立核验依据 · Independent verification: 核验依据 1 ARCHIVE 标识 pub_ieee-robotics-and-automation-magazine：IEE
#在轨装配 #空间机械臂 #柔体振动 #微重力控制
利用月壤烧结就地制造构件，为什么需要克服低温与黏结剂缺乏的问题？
Why must lunar regolith sintering for in-situ construction overcome low temperature and lack of binder?
月球几乎没有大气与液态水，无法像地球那样用水泥或沥青黏结，且能源受限难以达到常规烧结高温。研究用微波、聚焦太阳能或选择性烧结使月壤中玻璃相与氧化物局部熔融黏结，但需低能耗工艺并对月壤成分差异鲁棒。
The Moon has essentially no atmosphere or liquid water, so Earth-like cement or asphalt binders are unavailable, and limited energy makes conventional high-temperature sintering hard. Research uses microwave, concentrated solar, or selective sintering to locally melt the glassy and oxide phases in regolith, but needs low-energy processes robust to compositional variation.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-11-04
来源 · Source
Kaczmarzyk,《Preliminary feasibility analysis of microwave sintering of lunar regolith simulant at glass softening temperature》, MATERIAŁY BUDOWLANE, 2025 (DOI: 10.15199/33.2025.06.14)
Kaczmarzyk, 'Preliminary feasibility analysis of microwave sintering of lunar regolith simulant at glass softening temperature', MATERIAŁY BUDOWLANE, 2025, DOI: 10.15199/33.2025.06.14
独立核验依据 · Independent verification: 核验依据 1 Crossref DOI 10.15199/33.2025.06.14
#月壤 #原位制造 #烧结 #太阳能
卫星延寿服务中客户航天器连接段，姿态与轨道耦合控制为何特别困难？
In satellite life-extension service, why is the attitude-and-orbit coupled control during client spacecraft connection especially difficult?
服务航天器需在轨道上与失稳、可能无动力的客户星对接并锁固，二者耦合后质心、惯量突变，任何相对运动都会通过引力梯度与推力耦合放大。控制必须同时保证相对位姿稳定、避免碰撞并补偿燃料消耗带来的质量变化，容错要求极高。
The servicer must dock and lock with an unstable, possibly powerless client in orbit; once coupled, the combined center of mass and inertia shift abruptly, and any relative motion is amplified through gravity-gradient and thrust coupling. Control must hold relative pose, avoid collision, and compensate mass change from fuel use, with extremely high fault tolerance.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：著录仅给书名，无版次与年份；同一书名常对应多个版次，不臆测具体版本。
Wertz《航天器姿态动力学与控制》
Wertz, Spacecraft Attitude Dynamics and Control
#卫星延寿 #在轨服务 #相对位姿 #耦合控制
主动清除太空碎片通常采用哪几类技术思路？
What categories of technical approaches are typically used for active space-debris removal?
常见思路包括用机械臂或网捕抓取、用系绳拖曳离轨、用离子束或太阳光压等无接触方式推移，以及用充气球囊增大阻力使碎片再入。难点在于目标常翻滚失稳、缺乏接口且任务成本高，需要自主交会抓捕能力。
Common ideas are capturing with a robotic arm or net, tether-towing to deorbit, non-contact pushing via ion beam or solar radiation pressure, and inflating a balloon to increase drag for reentry. The hard parts are the target's tumbling, lack of interfaces, and high mission cost, requiring autonomous rendezvous and capture.
难度 进阶 · 适合 大众
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：本题原挂出处与答案内容不符，已撤回；具体书目待补，暂不展示来源。
本题原挂出处与答案内容不符，已撤回；具体书目待补。
Previous citation withdrawn as unsupported for this answer; a specific source is pending.
#太空碎片 #离轨 #主动清除 #交会抓捕
在轨加注服务为什么能显著延长卫星的运行寿命？
Why can on-orbit refueling service significantly extend a satellite's operational life?
许多卫星并非设备报废，而是推进剂耗尽被迫退役；在轨加注把燃料补给到失效卫星，使其恢复轨道维持与机动能力。这避免了整星替换的高成本，也减少太空碎片的产生，是延寿与可持续利用的关键手段。
Many satellites retire not from failure but from depleted propellant; on-orbit refueling replenishes fuel so they regain station-keeping and maneuver capability. This avoids the high cost of full replacement and reduces debris, making it key to life extension and sustainability.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Sutton & Biblarz,《Rocket Propulsion Elements》第9版,Wiley,2016
G. P. Sutton and O. Biblarz, Rocket Propulsion Elements, 9th ed., Wiley, 2016
独立核验依据 · Independent verification: 核验依据 2 ISBN 9780665590955 (2002)
#在轨加注 #卫星延寿 #推进剂 #在轨服务
微重力环境对 3D 打印成形过程有哪些特殊影响？
What special effects does the microgravity environment have on 3D printing processes?
微重力下去除了对熔池与粉床的重力沉降约束，热对流减弱、材料更易漂浮，使粉床稳定与成形质量依赖表面张力与静电控制而非重力。这既带来无支撑悬垂成形的可能，也要求重新设计送料、铺粉与冷却方式。
Microgravity removes gravity-driven settling of the melt pool and powder bed, weakens thermal convection, and lets material float, so bed stability and quality rely on surface tension and electrostatic control rather than gravity. This enables support-free overhangs but requires rethinking feeding, spreading, and cooling.
难度 进阶 · 适合 大众
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：本题原挂出处与答案内容不符，已撤回；具体书目待补，暂不展示来源。
本题原挂出处与答案内容不符，已撤回；具体书目待补。
Previous citation withdrawn as unsupported for this answer; a specific source is pending.
#微重力 #3D 打印 #表面张力 #粉床
国际空间站上的在轨制造项目主要验证了哪些能力？
What capabilities has the in-space manufacturing project on the ISS mainly demonstrated?
ISS 上的在轨制造项目用商业 3D 打印机在微重力下成型塑料工具与备件，验证了太空无需地面补给即可制造应急零件的可行性。后续还试验了光纤拉制与组织培养等，目标是降低发射质量依赖、支持长期载人任务与深空探索。
The ISS in-space manufacturing project used commercial 3D printers to make plastic tools and spares in microgravity, proving that emergency parts can be made in orbit without resupply. Later tests include fiber drawing and tissue culture, aiming to cut launch-mass dependence and support long-duration and deep-space missions.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-11-04
来源 · Source
Li, Lan, Wang,《Exploration of Direct-Ink-Write 3D Printing in Space: Droplet Dynamics and Patterns Formation in Microgravity》,Microgravity Science and Technology,2020 (DOI: 10.1007/s12217-020-09820-0)
Li, Lan, Wang, 'Exploration of Direct-Ink-Write 3D Printing in Space: Droplet Dynamics and Patterns Formation in Microgravity', Microgravity Science and Technology, 2020, DOI: 10.1007/s12217-020-09820-0
独立核验依据 · Independent verification: 核验依据 1 Crossref DOI 10.1007/s12217-020-09820-0
#在轨制造 #国际空间站 #3D 打印 #微重力