This paper presents compare results performance between two conventional controllers for bicycle robot. The bicycle speed control system was a highly nonlinear model multivariable and absolutely unstable. It has used for testing various design control techniques for low power. The objectives of this paper had to developed speed control which derived the mechanic model and experiment. Controllers are Proportional-Integral-Derivatives (PID) and on-off dynamic control. The dynamic system which also includes not stable friction effects the linear zed system model is used as a basis for the design to apply to speed. Computer simulation and experiment have been done controller are capable to control output speed wheel control system successfully. The results show PID controller better then on-off dynamic controller.

This paper presents how to design and build electrical protection equipment to apply for a wind turbine generator system which is modeled on low voltage 3 phase 380 volts system. This electrical equipment acts as a switch to open-close an electrical circuit to prevent an electrical system as well as equipments or devices in the system. It will open the circuit quickly and decrease the contact arcing of a circuit breaker. The implementation of power electronic properties is used instead of mechanical parts which is called “Solid-State Beaker”. This article presents a method of solid-state breaker simulation on the mathematical analysis via MATLAB/ Simulink program in the cases of fault occurring in an electrical system. The simulation is used as a comparison when it is brought into the system. The fault voltage is detected by RMS Method which is implemented in LAB View program. The detection signal will be sent to the solid-state breaker and order it to cut off all three lines simultaneously to confirm the efficient running of solid- state breaker. But this paper has not yet considered the effect of Harmonic.

The purposes of this research were to : 1) compare creative writing achievement of students learning Thai Folk song and learning Thai Moders song as Aids ; 2) study the creative writing progress of the students in both groups by comparing between pretest scores and posttest scores ; find creative writing means scores and standanrd deviation of two student groups and find the percentages of the affective means scores and psychomotor means scores of the both groups. Samples were 62 students at the first level of Bachelor Degree from two classrooms : 31 students of each at Rajamangala University of Technology during 2008 academic year. The basis on Using Thai Language One mean scores of two student groups were not significantly different at th .05 level. The students were equally divided into two experimental groups. The first group learned Thai Folk song as aids while the second group learned Thai Modern song as aids. The research tools consisted of creative writing pretests and posttests instruments for development creative writing and creative writing lesson plans. The procedures were as following. Firstly the creative writing achievement tests were administered to both groups of students as pretests. Secondly sixteen creative writing lesson plans learning Thai Folk song as aids were given to the first experimental group while another sixteen creative writing lesson plans learning Thai Modern song as aids were given to the second experimental group. Finally the creative writing achievement tests which were similar to the pretests were administered to both groups as posttests. The results were as following. I) The creative writing achievement ofstudents learning Thai Folk song and leaming Thai Modem SOlg as aids was not significantly different at the .05 level. 2) The mean scores of two student groups between pretests and posttests were significantly different at the .05 level. The posttest mean scores of both groups were higher than the pretest mean scores. 3) The averages of mean scores and standard deviations of students learning Thai Folk song as aids were 15.31 and 2.80 and another experimental group learning Thai Modem song as aids were 15.63 and 3.18 4) The percentages of the affective mean scores and psychomotor mean scores of students learning Thai Folk song as aids were 87.64 and 87.22 and another group learning Thai Modem song were 87.18 and 86.01 respectively.

The technology development has been continuing to solve the cost problem aiming to reduce work time to streamline the existing machines to be more efficient and productive including designing the devices to replace human labor. In present paper the author has an idea to develop and transform the old press machine which has faced the issues of the deteriorated helix core bunt motor when overloaded less productivity to hydraulic cylinder. This paper examined the development of the coconut oil pressing machine from old model to hydraulic cylinder system. In operating principles the developed machine uses the motor pumping the hydraulic oil into hydraulic pump the oil fuel was restricted by hydraulic pump to increase the pressure transmitted to the solenoid valve which is responsible for changing the direction of the oil flow resulting that the cylinder moves up and down under the control system. The cylinder presses the coconut pulp The study of the development of coconut oil press machine was initiated by drying the 3 kg coconut pulp in the sun to obtain the 0.2038 kg (or 160 ml) coconut oil. In this study the hydraulic cylinder presses 3 kg dried coconut pulp into 1.1858 kg (or 946 ml) coconut oil or accounted for 83.08% as compared the old machine. The payback period is within 29 days.

The purpose of this study was to compare undergraduate students reading writing performance and interest in learning English through reading instruction with and without computer in PowerPoint Program at Rajamangala University of Technology Phra Nakhon Bangkok Commercial Campus. The subjects for this study consisted of 80 undergraduate students in the first semester of the 2005 academic year of Rajamangala University of Technology Phra Nakhon Bangkok Commercial Campus. They were selected by using simple random sampling and divided into the experimental and control groups with 40 students in each. The randomized control group pretest -posttest design was used in the experiment. The experimental group was taught through the method in the reading instruction with computer in PowerPoint Program whereas the control group was taught through the method in the reading instruction without computer in PowerPoint Program. Each group was taught with lessons of the same content for sixteen 150 minute periods. The instruments used in the study were English reading writing performance tests and interest in learning English. The t-test for independent samples score was statistically used for data analysis. The results of the study indicated that: 1. The English reading performance between the experimental and control groups was significantly different at the .05 level. 2. The English writing performance between the experimental and control groups was not statistically significant. 3. The interest in learning English between the experimental and control groups was significantly different at the .05 level.