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008 120405t2011 my a f m 001 0 eng d
020 _aTHE0006557(Local)
039 9 _a201905141539
_bamirul
_c201710031620
_daishah
_y201204051554
_zida
040 _aUMP
090 _aTJ1189 .F35 2011 rs Thesis
100 0 _aAhmad Fakhri Ab. Nasir
245 1 0 _aPeningkatan halaju suapan maksimum penginterpolasi CNC dedenyut rujukan menggunakan pengaturcaraan selari /
_cAhmad Fakhri Ab. Nasir
260 _aKuantan, Pahang :
_bUMP,
_c2011
300 _axx, 169 p. :
_bill. (some col.) ;
_c30 cm. +
_e1 CD-ROM
502 _aThesis (Master of Engineering (Manufacturing)) -- Universiti Malaysia Pahang - 2011
504 _aBibliography : p. 146-149
520 3 _aMaximum allowable feed rate for reference-pulse Computer Numerical-Control (CNC) system is limited by the interpolator iteration speed. In other word, it means higher iteration speed corresponds to higher maximum allowable feed rate. To develop interpolator with higher maximum allowable feed rate, the proposed interpolator is aimed to execute the interpolator tasks in concurrent manner. In the recent years, the computer industry has changed a lot in term of hardware development. Multi-core processors were introduced whereby a single computer has two processors working on it and contain multiple logical processors in a single package. By using multi-cores environment, algorithm has to be changed in order to fully utilise the speed of the processors. This situation is also required in interpolator algorithm. The existing interpolator is not using parallel programming which every task have not been execute simultaneous in concurrent manner although using multi-cores processor computer, thus, the more time is needed for the iteration time especially for a complex and large scale of process. The main research objective is to modify the existing Wan Yusoff reference-pulse CNC interpolator and Omirou reference-pulse CNC interpolator using parallel programming to increase maximum allowable feed rate. The proposed interpolator is developed using parallel programming in C/C++ language through Open Multi-Processing (OpenMP). The proposed interpolator was compared with Wan Yusoff (2003) interpolator and Omirou and Nearchau (2006) interpolator through computer simulation and experiment with servomotor. Computer simulations which were conducted on various parametric curves indicated that the proposed interpolator are at least 37.04% more efficient compared to Wan Yusoff (2003) interpolator and at least 20.10% more efficient compared to Omirou and Nearchau (2006) interpolator. Finally, the experimental results verify that the maximum allowable feed rate for the proposed interpolator are higher than Wan Yusoff (2003) interpolator and higher than Omirou and Nearchau (2006) interpolator. The proposed interpolator is ready for new era of multi-processors.
650 0 _aMachine-tools
_xNumerical control
650 0 _aComputer algorithms
650 0 _aMachine theory
856 4 0 _uhttp://ecollib.ump.edu.my/3802/
_zAccess in library only
999 _aVIRTUA40
_c3167
_d3173
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