FCS是英文Fabric Circle System的缩写，意思是面料循环牵引系统，是电动天棚帘中的一类，该系统通过单个管状电机和钢丝牵引提供动力来达到系统大面积遮阳的效果。FCS天棚帘收拢时呈折叠式，展开时呈波浪形。FCS天棚帘系统主要由传动机构、面料和控制系统三部分组成。由于该机构张力较小，可选用普通卷帘面料。遮阳面料如波浪般的整齐地伸展在采光屋顶，面料层层折叠中体现出强烈的立体感，给人视觉上强烈的艺术冲击，是目前使用较多的天棚帘遮阳系统。
FCS is the abbreviation for Fabric Circle System in English, which means the fabric circulation traction system. It is a type of electric ceiling curtain that provides power through a single tubular motor and steel wire traction to achieve a large area shading effect of the system. The FCS canopy curtain folds when folded and unfolds in a wavy shape. The FCS ceiling curtain system mainly consists of three parts: transmission mechanism, fabric, and control system. Due to the low tension of this mechanism, ordinary roller shutter fabric can be used. The sunshade fabric extends neatly like waves on the daylighting roof, and the layered folding of the fabric reflects a strong three-dimensional sense, giving people a strong artistic impact visually. It is currently a widely used ceiling curtain sunshade system.
1、管状电机：根据转速、功率、扭距等可分为很多种，具体选择哪种，需要专业人员根据具体情况评定。
1. Tubular motor: It can be divided into many types based on speed, power, torque, etc. The specific choice needs to be evaluated by professional personnel according to the specific situation.
2、钢丝：钢丝分为导向钢丝和牵引钢丝。
2. Steel wire: Steel wire is divided into guide steel wire and traction steel wire.
3、吊轮：能让面料在导向钢丝上以较小的摩擦阻力运行的部件。
3. Hanging wheel: a component that allows the fabric to move with less frictional resistance on the guide wire.
4、滑轮：主要起到固定钢丝和转换方向的型托辊 吸水树脂 天津水处理设备 邯郸断桥铝门窗 唐山防水 检查井模具 沟盖板模具作用。
4. Pulley: mainly used to fix steel wires and change direction.
5、面料支撑杆：起到支撑和分割面料的作用，与吊轮相接，使面料在导向钢丝上稳定有序的运行。
5. Fabric support rod: plays a role in supporting and dividing the fabric, and is connected to the lifting wheel to ensure stable and orderly operation of the fabric on the guiding steel wire.
6、卷线器：收放牵引钢丝的部件，使钢丝在绷紧的状态下，稳定的运行。
6. Winder: A component for retracting and retracting traction steel wires, allowing them to operate stably in a tight state.
收拢时呈折叠式完全展开后，呈现波浪效果
When folded and fully unfolded, it presents a wavy effect