陶瓷砖抗折实验机测控系统的设计与实现

发布时间：2018-04-03 12:13

本文选题：抗折试验机　切入点：ATmega64　出处：《天津科技大学》2017年硕士论文

【摘要】：陶瓷砖作为现代日常生活中长用的装饰材料,其抗折性能一直是人们关注的热点,也是衡量陶瓷砖耐用性的重要指标。在实际生产中,生产出来的陶瓷砖试件需要在抗折机上进行检验来验证它能否满足实际应用中对其抗折性的要求。传统使用的抗折机均为自制设备,制造粗糙,误差大,手工操作,难于执行技术标准。为此,陶瓷砖抗折机需要更精确更自动化的设备。国外的材料抗折机已经迈向了智能化、集成化和数字化。而我国的抗折机的发展相对来说比较缓慢,相较国外的抗折机,我国的水平还是比较落后。为此,依据GB/T 3810.4—2006《陶瓷砖试验方法—第4部分:断裂模数和破坏强度的测定》和ISO 10545-4:1994《陶瓷砖—第4部分:断裂模数与破坏强度的测定方法》对抗折机设备的要求,提出一种新型陶瓷砖抗折试验机,下位机基于高速混合信号的微控制器Atemga64作为系统主控,采用虚拟仪器开发平台Labwindwos/CVI进行控制系统编程,使操作简单,控制过程更加智能化,自动化,测试结果精确度更高。除此之外,抗折机对陶瓷砖施加压力值的过程也需要精准的控制,加载过程要平稳,加载的压力值要均匀。模糊PID技术融合模糊技术和PID技术于一身,利用模糊规则实现参数的在线修正,同时结合增量PID技术对修正的参数进行实时调整。利用高精度频率修正脉宽调制技术实现对步进驱动器的控制,完成整个测试过程中对陶瓷砖实施等荷加载压力值的过程。与此同时,结合新型陶瓷砖抗折机检测原理及USART驱动接口构建了基于微控制器和虚拟仪器开发平台Labwindows/CVI的陶瓷砖抗折机测控系统。弥补了旧有陶瓷砖抗折机功能单一、检测数据误差大、调速范围小及控制精度低等缺点,通过近几年来的市场应用表明,整套系统运行可靠、加载速率控制稳定、力值检测精度高及数据分析处理能力强。极大的弥补了旧有陶瓷砖抗折试验机测控系统的不足。
[Abstract]:Ceramic tiles as a modern daily life long use of decorative materials, the flexural performance is always the focus of attention, but also an important indicator to measure the durability of ceramic tiles. In actual production, production of ceramic bricks out of the specimen needs to be tested in bending machine to verify whether it can meet the requirements of bending in the practical application. The traditional use of bending machine are homemade equipment manufacturing, rough, large error, manual operation, difficult to implement technical standards. Therefore, ceramic tile bending machine needs more accurate and more automation equipment. Foreign material bending machine has been towards intelligent, integrated and digitized. The bending machine development is relatively slow, compared to foreign bending machine, the level of our country is still relatively backward. Therefore, on the basis of the fourth part of GB/T 3810.4 - 2006< ceramic tile test method: rupture modulus and breaking strength test Set ISO 10545-4:1994< > and ceramic tiles - Part fourth: modulus of rupture and the damage strength determination method of flexural > machine equipment requirements, puts forward a new type of ceramic tile bending test machine, machine high speed micro controller Atemga64 based on mixed signal as the main control system, using the virtual instrument development platform Labwindwos/CVI control system programming and the operation is simple and the control process more intelligent, automation, test results of higher accuracy. In addition, the process of bending machine to put pressure on the value of ceramic tiles also need to accurately control the loading process, to steady, loading pressure value should be uniform. Fuzzy PID fusion fuzzy technology and PID technology in the body, the use of online correction to achieve the parameters of the fuzzy rules, combined with the increment of PID technology to adjust the correction parameters. By using high precision frequency correction pulse width modulation technique to achieve the stepper drive Actuator control, process value of ceramic tiles on the implementation of load pressure to complete the entire test process. At the same time, combined with the new ceramic tile bending machine detection principle and the USART driver interface is constructed of ceramic brick micro controller and the development platform of virtual instrument Labwindows/CVI measurement and control system based on the anti bending machine. To make up for the old ceramic tile bending the function of a single machine, big data error detection, small speed range and low precision control, through the market application in recent years indicates that the whole system is reliable and the loading rate control and stability, high accuracy and data processing ability. The maximum value to compensate for the lack of the old ceramic tile bending testing machine control system.

【学位授予单位】：天津科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TQ174.12

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