Different methods have been developed for determining the performances of thermoelectric (TE) modules. One of them is a method, developed by Ahiska et al., based on certain parameters measured easily such as temperatu...
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Different methods have been developed for determining the performances of thermoelectric (TE) modules. One of them is a method, developed by Ahiska et al., based on certain parameters measured easily such as temperature, current and voltage. According to this method, in order to determine the performance of a thermal and electrical of TE module, firstly it is necessary to determine the parameters I-max, V-max and E-max. For this purpose, a large number of measurements are used in the determination of the parameters of TE module conventionally. Therefore, this procedure requires extensive time to obtain the expected thermal stability. In this study, a new algorithm is developed based on parabola calculations in order to determine the parameters Imax, Vmax and Emax of TE modules and systems by less measurement in shorter time. The new parabolic algorithm was adapted to thermoelectric performance analysis system (TEPAS) that was developed previously. In order to determine the performance of the test system based on the new parabolic algorithm, experimental studies were made using Melcor CP1.4-127-10 model. Relative error rates of obtained parameters using new parabola algorithm with respect to classical method are Delta T-max to 0.3%, I-max to 1%, V-max to 0.8% and E-max to 2.9%. As a result;it is understood that the parameters I-max, V-max and E-max of TE module can be obtained correctly and in a shorter time using this new method based on parabola algorithm.
Taking tube bender system for producing pagoda-shaped fluorescent tubes as an example in this paper, four coordinates movement equations of CNC system with Parabolic characteristic are derived and an algorithm for non...
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ISBN:
(纸本)9783037850190
Taking tube bender system for producing pagoda-shaped fluorescent tubes as an example in this paper, four coordinates movement equations of CNC system with Parabolic characteristic are derived and an algorithm for nonlinear interpolation of four-axis linkage based on target point tracking algorithm is presented for the spiral fluorescent tube bending machine with CNC system by means of deep analysis of the pulse interval interpolation algorithm. By using this algorithm, coordinated control of four coordinates in tube bender system can be realized and, in addition, software programming procedure can be directly used for this system. Test shows that the system which uses this interpolation method has the characteristic of simple operation, high speed and high single-pulse interpolation accuracy.
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