The performance of maglev train ’ s brake system concerns the security of transportation directly . the main research of the subject is the design of mechanical brake system and how to improve the ems low - speed magnetic levitation train mechanical brake system ’ s performance index 磁浮列车制动性能的好坏直接关系到交通运输的安全,本课题主要研究常导低速磁浮列车的机械制动,提高机械制动的性能指标。
To meet the customer ' s special demand , nanjing hoisting machinery general works has developed more than one hundred types of non - standard . special - used wire - rope hoist on the basis of model cdi , mdihoist . the main types are as follows 电动葫芦使用在特别重要的场所时，应装设第二制动器，根据用户的使用要求，我厂还生产除有锥形转子制动电动机正常制动外，还可在减速器的高速轴和增加一套弹簧电磁矢电制动器，增加制动的安全性。
The wdzs1 series brakes is fricative braking device automatically set to working by a spring when a power - cut occurs . it ' s widely applicable in automatic door , stage apparatus , medical appliances , offics facility , etc . , to secure a prompt and accurate braking effect Wdzs1系列微型电磁失电制动器为通电脱离(释放) 、断电弹簧制动的摩擦式制动器，广泛应用于自动门、舞台、医疗器械、办公设备等机械传动系统中，实现快速停车和准确定位。
As the motor of hev , it is required to meet the need of the frequency of start - up / shut - down , step - up / speed - down , the radical change between higher angular moment during low speed or climbing and lower angular moment during high speed , the enablement of regenerative braking 作为混合动力电动汽车用的电机要求能够满足频繁地启动停车、加速减速，低速或爬坡时要求高转矩，高速行驶时要求低转矩的大范围变速，以及实现再生制动的需要。
A digital control emergency braking system of hoist is carried out based on industrial controlling computer , it has successfully realized constant deceleration retardation , a new approach has been developed for improving the safety and reliability of hoist emergency braking 给出一种利用工控计算机实现的全数字控制提升机紧急制动系统，系统已成功地实现了提升机紧急制动时的恒减速，为有效地提高提升机紧急制动的安全性和可靠性开辟了新的途径。
The first , the principle of electrical regenerative braking and several control strategies for regenerative braking of this motor were discussed . the second , the control strategy , control logic and influential factors on recovering braking energy were analyzed for ev and hev 首先分析了永磁无刷直流电机的再生制动原理及目前己有的各种电机再生制动控制策略的特点,尔后分析了电动汽车整车再生制动的控制策略、控制逻辑与制动能回收的影响因素。
A kind of high - performance transducer named as cimr - g54e41851 of yaskawa functioning as a speed adjustment with s - form and torque promoting is introduced to solve the problem facing to conversion of speed and starting in this new - style conveying system . as mentioned above , we take the advantage of plc . based on fx2n plc ’ s programming software the gx developer 7 . 0 introduced in our system adopts the modularization design method of structure and code reusing , subsequently decreasing the procedure of the soft ? programming and maintenance cost 在本系统中,为了实现能源的充分利用和生产的需要,需要对电机进行转速调节,考虑到电机的启动、运行、调速和制动的特性,采用高功能性v / f控制的通用变频器安川cimr ? g5e41851 ,此变频器的s型加减速功能和转矩提升功能,能很好的解决转速之间的切换和启动问题。
In this paper , the design of electric forklift driving controller is demonstrated . otherwise , can is added into this controller , so as to build up can networks with other modules equipped with can controllers . this paper is composed of 7 chapters : in the first chapter , the background of the paper is introduced ; in the second chapter , the structure of electric forklift is demonstrated ; in the third chapter , first the math model of series motor is found , then the motor is controlled as improved p1d control rule ; in the fourth chapter , the principle and realization method of forward and reverse rotation and back - feed brake are explained ; in the fifth chapter , the principle of can and design of application layer in can are illuminated ; in the sixth chapter , the principle of e2prom is clarified ; in the last chapter , summary of the whole paper is given , and prospect in this field is made 全文共分七章：第一章绪论，介绍了论文背景；第二章，系统综述，介绍了电动叉车的整车结构；第三章，串励电机的建模、改进的pid算法及其软硬件实现，首先根据串励电机的机电特性推导出数学模型，然后在此基础上结合pid控制规律对电机进行控制；第四章，串励电机的正反转及回馈制动，介绍了实现电机正反转及回馈制动的原理及方法；第五章， can网络实现模块间通讯，介绍了can总线原理及can总线应用层设计；第六章，用串行e ~ 2prom实现参数设定，介绍了串行e ~ 2prom的原理；结束语，对本论文进行了总结，并对该领域的发展进行了展望。
The abs ’ mainframe can get train ’ s velocity and acceleration from the velocity sensors , and then accomplishes some certain braking actions in term of them . but velocity sensors are easier damaged because of its special installing position and working environment . the mainframe of abs only can diagnose some simple faults , for example , the short circuit and open circuit 其中速度传感器是防滑器正常制动的关键部件,但是转速传感器在工作时安装位置比较特殊,工作环境恶劣,容易受到腐蚀、碰撞等损伤,而防滑器主机通常仅能对转速传感器的短路或断路故障做出诊断,对转速传感器发生的其他故障难以识别,这样就容易在列车运行时引发防滑器误动作,甚至导致事故发生。
2 , mix the room inside out to anticipate from taking to make dynamic electric motor to pass leather belt or putting the line deceleration machine peace bread round pole , made to mix room to turn inside out 140 degreeses to tilt to one side to anticipate before rounding , that organization loading ability big , the physical volume is small , structure tightly packed , operation steady 2混炼室翻转炼料，由带制动的电动机通过皮带或摆线减速机和平面包络蜗轮蜗杆，使混炼室绕前转了翻转140度倾斜炼料，该机构承载能力大体积小，结构紧凑运转平稳。
