Configuration and kinematics analysis of locking-releasing mechanism for side-loaded lunar rover

In order to save space for storing precision equipments,lower the center of mass of Lander and reduce lunar rover's dimension constraint limited by mechanism of Lander,the locking-releasing mechanism of side-loaded lunar rover loaded outside Lander is presented,which is a kind of metamorphic mechanism.To ensure the working of this mechanism as the metamorphic process designed,configuration analysis of the locking-releasing mechanism is carried out,and topological structures are described by Huston lower numbered arrays.A kinematic mathematical model of the mechanism is established through homogeneous transformation matrix.The kinematic simulation validates the feasibility of the locking-releasing mechanism when the configurations are shifted from one to the other.

供配电及用电系统在民用建筑中的运用——以某住宅小区为例

电力系统由各种电压电力线路及发电厂、变电所和电能用户联系起来的一个发电、输电、变电和用电的整体。在军事、民用、工业、建筑、石油、化工、铁道运输等领域已经充分运用。建筑供配电就是指建筑所需电能的供应和分配问题,是由变、配电室、区域配电间、电力线路和用能设施组成的一个受电、变电、配电、供电、输电、用电的整体。变、配电室变电所是接受电能、变换电压和分配电能的场所,由电力变压器和配电装置组成。变电所按变压的性质和作用又可分为升压变电所和降压变电所两大类。升压变电所的任务是将低电压变换为高电压,以利于电能的传输。降压变电所的任务是将高电压变换到一个合理的电压等级,在民用建筑中以降压为主,以升压为特殊。基于此,本文从应用的角度就住宅小区的供配电系统做了简要的介绍,并对其供电电源、配变设置、变电所选址等内容进行了分析。