变速器疲劳寿命试验台电气控制系统研究

发布时间：2018-12-11 08:54

【摘要】：变速器疲劳寿命试验是检测变速器质量好坏的重要手段,能够及时发现变速器在设计制造过程中的缺陷,为产品设计和质量评价提供可靠的科学依据,对于缩短变速器产品研发周期和提高产品质量具有重要的意义。目前,针对变速器疲劳寿命试验的电封闭疲劳寿命试验台应用广泛,该类型试验台具有能为变速器的疲劳寿命试验提供精确的转速和转矩控制,能量回收率高等特点。本文针对交流电封闭式变速器疲劳寿命试验台的电气控制系统进行了系统详细的设计。主要研究工作包括:(1).通过分析商用车变速器的结构,研究变速器疲劳寿命试验的相关试验标准和试验规范,通过对比目前不同结构的变速器疲劳寿命试验台,确定了变速器疲劳寿命试验的拖动和加载方式,制定了试验台电气控制系统的总体方案。(2).对试验台电气系统进行了硬件选型。根据被试变速器的技术需求,进了试验系统的拖动电机、加载电机、整流单元、逆变单元、附件单元的选型,以及电气系统控制单元的硬件选型。(3).对主电路以及控制电路进行了电气原理设计。结合选型硬件的电气原理,设计了包括整流模块电路、逆变模块电路、制动电阻电路等主电路,以及PLC与变频控制系统的控制电路。(4).对电气控制系统进行了底层控制程序编写和组态。编写了电气控制系统底层控制程序,包括初始化程序设计、整流控制程序设计、驱动以及加载电机的正反拖启停控制程序设计、驱动以及加载电机的速度扭矩控制程序设计、电机故障输出程序设计、逆变控制程序设计、通讯程序设计等,并进行了电气系统的组态。(5).对电气控制系统进行了调试和试运行,验证了电气控制系统的硬件设计以及软件设计等方面能够满足变速器疲劳寿命试验所需的技术需求。
[Abstract]:The fatigue life test of transmission is an important means to detect the quality of transmission. It can discover the defects of transmission in the process of design and manufacture, and provide a reliable scientific basis for product design and quality evaluation. It is of great significance to shorten the R & D cycle and improve the product quality of transmission. At present, the electrically closed fatigue life test bench for transmission fatigue life test is widely used. This type of test bench can provide accurate speed and torque control and high energy recovery rate for the fatigue life test of transmission. In this paper, the electrical control system of the closed AC transmission fatigue life test bench is designed in detail. The main research work includes: (1). By analyzing the structure of commercial vehicle transmission, the relevant test standards and test specifications of transmission fatigue life test are studied, and the fatigue life test bench of transmission with different structures is compared. The driving and loading modes of the transmission fatigue life test are determined, and the overall scheme of the electrical control system of the test bench is established. (2) The hardware selection of the electrical system of the test bed is carried out. According to the technical requirements of the test transmission, the type selection of the driving motor, loading motor, rectifier unit, inverter unit, accessory unit and the hardware selection of the control unit of the electrical system are introduced in the test system. (3). The main circuit and control circuit are designed. Combined with the electrical principle of hardware selection, the main circuits including rectifier module circuit, inverter module circuit, brake resistance circuit and control circuit of PLC and frequency conversion control system are designed. (4). The bottom control program of the electrical control system is compiled and configured. The bottom control program of electrical control system is written, including initialization program design, rectifier control program design, forward and backward towing control program design of driving and loading motor, speed and torque control program design of driving and loading motor. Motor fault output program design, inverter control program design, communication program design, and electrical system configuration. (5). The electrical control system is debugged and tested, and the hardware design and software design of the electrical control system are verified to meet the needs of the transmission fatigue life test.
【学位授予单位】：重庆理工大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：U467.523

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