共查询到20条相似文献,搜索用时 78 毫秒
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提出了基于温度监测法的CO浓度检测软件自补偿方法;设计了检测系统的硬件电路,包括CO气体调理放大电路、STC12C5410AD单片机主控电路、LCD显示电路、温度测量及调理电路、PC机通信及程序下载电路;通过实验,得出了CO浓度测量系统的输入输出特性的线性拟合方程;通过CO测量系统的温度自补偿,误差为未补偿时的58.50%,提高了测量系统的温度稳定性,减小了温度变化带来的温度附加误差。 相似文献
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介绍了一种新型干簧管检测仪,其特点是采用计算机自动检测干簧管,根据有效的算法判别并读取干簧管的电性能参数,还可以根据检测结果筛选出不合格的干簧管。经生产使用验证,该新型干簧管检测仪比传统的人工检测更加可靠,大大提高了检测效率和检测精度。 相似文献
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工程化光纤光栅液体压力传感器的研制 总被引:1,自引:0,他引:1
液体压力是流体压力管道结构的重要荷载,传统的液体压力传感装置无法满足长期监测对其稳定性与耐久性的要求.基于双光纤光栅感知原理,针对某重点工程项目的环境条件,设计开发出了一种满足工程应用需求的液体压力传感装置,给出了详细的理论分析,并通过大量的标定试验分析了该装置的传感特性,理论与实验数据吻合很好,相差小于3%.根据随机抽取的100个传感器的标定数据,采用统计分析方法得到了该类传感器的各性能指标:测量范围0~2.5 MPa,分辨率<0.4%F·S,迟滞<2.4%F·S,重复性<2.3%F·S,线性度<2.1%F·S,总精度<4%F·S,结果表明该传感器具有温度自补偿、线性度和重复性好、精度较高等优点,适合压力管道结构液体压力测试,具有良好的应用前景满足实际工程需要. 相似文献
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《Precision Engineering》2013,37(1):222-227
A new apparatus for an ultrasonic vibration-assisted glass hot embossing process has been developed. The upper die constitutes the ultrasonic vibrating device, and a cooler is provided to protect the transducer from the high operating temperatures. An ultrasonic horn originally designed for use at room temperature was modified to ensure correct operation of ultrasonic vibrating device for high temperature use. Because the load cell is located inside a vacuum chamber, the detection of the force applied to the glass during the forming process is not significantly impacted by external forces, and thus, a precise force history of the forming glass can be obtained. Flat hot embossing experiments were performed to investigate the effect of ultrasonic vibration on the amount of force required during forming, and Fresnel structure hot embossing experiments were then conducted to investigate the improvement in molding accuracy gained through ultrasonic vibration. The experimental results are taken to validate the manufacturing potential of the developed apparatus and the improvement in formability achieved by applying ultrasonic vibration. 相似文献
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A. L. Vorontsov N. M. Sultan-Zade A. Yu. Albagachiev A. I. Savkin 《Russian Engineering Research》2011,31(1):47-52
The basic mathematical equations required to construct a theory of thermal cutting processes are considered for heat transfer at adiabatic and isothermal surfaces. A method of taking account of the actual cutter shape is presented. 相似文献
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提出一种新的改进PID控制算法--连续变速积分控制算法.对其进行了仿真,与常规PID算法进行了比较,并将其应用于小型电加热炉的控制中.仿真及实际应用结果表明,该算法可提高控制质量,克服了常规PID算法容易造成超调与积分饱和的问题,且易于进行参数整定,特别适用于间歇生产过程及程序温度控制. 相似文献
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A. L. Vorontsov N. M. Sultan-Zade A. Yu. Albagachiev A. I. Savkin 《Russian Engineering Research》2010,30(12):1241-1247
The problem is formulated, and the basic mathematical equations required to construct a theory of thermal cutting processes
are outlined. 相似文献
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A. L. Vorontsov N. M. Sultan-Zade A. Yu. Albagachiev A. I. Savkin 《Russian Engineering Research》2011,31(2):147-152
The discussion of a continuous heat source completes the presentation of the basic mathematical equations required to construct a theory of thermal cutting processes. 相似文献
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A. L. Vorontsov N. M. Sultan-Zade A. Yu. Albagachiev A. I. Savkin 《Russian Engineering Research》2010,30(2):149-151
The temperature distribution over the chip thickness in cutting is analyzed. For the first time, a mathematical explanation is offered for the types of temperature distribution observed, with illustrative examples. 相似文献