2 , when there is no power supply , pulling hand chain could enable the door to rise slowly , pulling deadweight lowering dragline could enable the door to go down at constant speed by deadweight . 3 , the door could be positioned accurately at any location with in the travel 为我公司生产的遥控器和卷门机的配套产品，可在无电的情况下自动实现卷帘门上下，并且在有电的情况下自动充电蓄电。
Our company is a new developing enterprise run by the local people , technical force is rich , have all kinds of professional technicians , many kinds of working ability of casting , machining , various kinds of surface are dealt withing etc . 佳得利门机有限公司是一家新兴的民营企业,技术力量雄厚,拥有各类专业技术人才，具有铸造机械加工各种表面处理等多种加工能力,公司产品已通过ccc认证
Preparing for next working , simulation of the motor control system is done with software at the end of this paper , the reliability methods in design are introduced and reliability measures in elevator door drive system are described 还用软件仿真的方法对电机控制系统进行了仿真，为后续工作提供参考。在本文的最后介绍了电梯门机控制系统设计中采用的可靠性设计方法与所采用的可靠性措施。
This paper describes several treatment methods for foundation of rail bearer of wharf gantry crane , and puts forward some suggestions for design and construction , so as to shorten the maintenance period of gantry crane rail bearer , and ensure good performance of equipments 摘要对码头门机轨道梁基础处理的几种方法进行了论述，并对设计、施工提出一些建议，以缩短门机轨道梁的维护周期，保证设备处于良好工作状态。
Intellectual door machine system and microcomputer controlled new type non connecting bar structure can automatically adjust the door speed and torque according to actual door load of each stop and let passengers feel respect and enjoyment when the door open or close 智能化的门机系统，运行微机控制的新型无连杆式结构，可根据各层站的实际门负载条件自动调节门速和扭矩，在门的开合之间，让乘客体会到尊贵与享受。
Then the paper describes the developing process of elevator door drive system in which square wave bldcm is adopted . when presenting hardware and software of this system , in particular the paper narrates speed regulation means and torque ripple suppression strategy 本文然后详细介绍了采用方波无刷直流电机的电梯门机控制系统的研制过程，并在介绍系统的硬件和软件设计方案时，同时研究了所使用的电机的调速方法和转矩脉动抑制策略。
The factory is specializing in manufacturing automatic gate operators which are widely used for driving sliding gates , swing gates , rolling doors and barriers , relating accessories gear rack , etc . the factory also manufactures and exports the following products : - pe - al - pe composite pipe and fittings 我厂专业生产各种系列开门机，卷门机挡车器，和pp - r合成管件，及铝塑管件，产品远销东南亚，欧美各个国家，欢迎各个国家地区的厂家代理商与我们联系。
The gate - motor syste m of the elevator is also discussed in rough as the research background . this paper also does some work about the self - adaptation function in the dtc - system and brings forward self - adaptation - system on software according to the requests of the gate - motor system 本论文以电梯门机系统作为应用背景，对其作了大致的介绍；并按照门机系统的工作要求，对带有自学习功能的直接转矩控制系统作了探讨，并根据应用背景建立了相应的自适应系统。
Analysis is carried out in the use of ans ys software on the sleeve structure of the rotating platform thereof and stress , deformation and strain energy in the respect of distribution and the distribution atlas of stress , shift are acquired for the purpose of structure state monitoring and diagnosis as well as testing both in theory and technology instructions 运用ansys软件对装卸型门机的转台筒体结构进行了分析，得到了结构的应力、变形、应变能等的分布情况和应力、位移等分布图谱，为结构状态监测与诊断、测试提供了理论和技术指导。
This paper compares the spatial calculation of piled wharf with simplified plane bent structures ' calculation through selected models , and analyzes the effect on the simplified transverse beam at different location of the crane , so as to obtain the distribution rule and empiric coefficient of crane load 摘要通过所选模型进行高桩码头结构空间计算与简化的平面排架计算对比，分析门机不同位置时传递到所简化横梁的作用效应，从而得出门机荷载的传递分配规律及传递的经验系数。
