จำนวน Repository ( 70 )

การวิเคราห์ความน่าเชื่อถือได้ในการทำงานของเครื่องจักร และหาสาเหตุของเครื่องจักรเสีย: กรณีศึกษาโรงงานผลิตชิ้นส่วนรถยนต์
การวิเคราห์ความน่าเชื่อถือได้ในการทำงานของเครื่องจักร และหาสาเหตุของเครื่องจักรเสีย: กรณีศึกษาโรงงานผลิตชิ้นส่วนรถยนต์

This research proposes reliability analysis in order to find the probability that a machine will work properly the failure rates of a machine and the factors related to the failure rates. The data were collected from 8 types of machines in an autoparts manufacturing factory. They consist of the times measured from the first day of the study until the machine produces defective product workers and production steps. The study duration is 90 days. The results show that the probability that the machine type 4 will work properly more than days is 0.40 machine type 5 more than 68 days is 0.32 machine type 6 more than 72 days is 0.31 machine type 8 more than 85 days is 0.26 machine type 9 more than 109 days is 0.80 machine type 10 at more than 52 days is 0.38 machine type 11 more than 71 days is 0.32 and the probability that the machine type 12 will work properly more than 85 days is 0.26. The failure rate of the machine type 4 at day 51 is 6.61 machine type 5 at day 68 is 1.61 machine type 6 at day 72 is 0.77 machine type 8 at day 85 is 1.26 machine type 9 at day 109 is 1.31 machine type 10 at day 52 is 0.92 machine type 11 at day 71 is 1.24 and the failure rate of the machine type 12 at day 85 is 2.15. The factors influencing on the failure rates are worker group 2 and production step 3 at the significance of 0.05.

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Automated production of traditional liquor by cooling method
Automated production of traditional liquor by cooling method

An automated production of traditional liquor by cooling method is presented in this paper. Thai traditional liquor is a product of One Tombon One Product (OTOP) and it was refined using traditional method. That is boil the fermented rice that obtained from fermented sticky rice with leavening and then condense the steam in coolant tank until receive the 35 degree distilled liquor. The entire production process is mainly base on worker’s experience which cause the uncertainty of production time and the alcohol percentage is not constant. In this paper we have developed the automatic distillation by using microcontroller to control the production process. The digital thermometer and limit switch are used to check temperature and water level (maximum-minimum) inside coolant tank respectively. And temperature in the coolant tank is controlled to vary slightly between 38-40 degrees. When the temperature inside the coolant tank is higher than a certain threshold the microprocessor instructs to solenoid valve and water pump to drain hot water and to pump cold water into tank respectively. So the temperature inside coolant tank is constant. An automated production of traditional liquor by cooling method was fabricated and experimented with community at Banlang Mueang Lampang. The results show that the proposed method has the volume of liquor rather than the original method. In 100 minutes the proposed method has distilled liquor 10 liters while the original method has 8.4 liters. And alcohol percentage is constant at 35 degrees.

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Semi-automatic mapping of electric poles using sfm technique
Semi-automatic mapping of electric poles using sfm technique

The objective of this research is to proposed a semi-automatic method for mapping electric poles using the structure from motion technique or SFM. First an epipolar geometry for each image pair is estimated. Then the 3D structures are obtained using incremental SFM technique which will give us both 3D point cloud of the study area and camera parameters. Also vertical 2D lines are extracted from the input images. These 2D lines and the 3D structures are then integreated for estimating the positions of electric pole in 3D space. Finally these 3D electric poles are then geo-registered by estimating 3D rigid transformation from embeded coordinates in the input images.

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Development of an automatic provision paper machine
Development of an automatic provision paper machine

These dissertation is discussed development of Automatic Provision Paper Machine. By apply suction roller in the paper provision paper of size A4 to as a set and suture package control by microcontroller AVR MEGA 1280. Which the machine has 8 layer each layer has 50 sheets use the time for provision 40 second per minute that 1 set has 8 sheets. From the results of the equipment. It have some problem form suction rollers system. May be caused equipment in each is different an size roller or stiffness of spring and errors. Sensor is detect camshaft at moving through the disturbance of the light surround area with too much ability to detect lower. Which the repair and amend it

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การออกแบบและสร้างชุดทดลองการควบคุมระบบอัตโนมัติในทางวิศวกรรมหลักเพื่อใช้ร่วมกับครุภัณฑ์มาตรฐาน
การออกแบบและสร้างชุดทดลองการควบคุมระบบอัตโนมัติในทางวิศวกรรมหลักเพื่อใช้ร่วมกับครุภัณฑ์มาตรฐาน

This reseach presents development of engineering education about automation engineer. The objectives of develop education technology automatic control systems. The development and pilot institutions or company associated with the agency so that it can compete with companies in the ASEAN countries. In the design research and development training kit to support and use in teaching and learning control liquid level like an industry as the reality of the industry. The trainner could be applied to the advanced control theory for experiment in teaching or training in class room similary industry personnel. The hardware is compatible with existing standards. It is increase the capacity of existing courses such as a course to learn basic control system consists of a sensor industry around the outside parmerter. The sensor could be real measured and simulation from plant model. The student can control the virtual experiments. Controller could be learning such as PLC Microcontroller and computers. The experiments determine relation of correlated response signal ON-OFF and PID by adjust Gain control systems that have tenor as same as control theory which describes the response of the control. The experimental results of this the research collected in the operating room. The ability to control the system to could be doand meet the taget and follow by objective

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