Tuesday, 20 February 2024

Minggu ketiga: motor control & drives

 Minggu ni aku belum memulakan amali. Ini adalah kerana masih ada pelajar yang baru muncul minggu, taktau la pasaipa. Jadi waktu amali pun buat teori .


Jadi, 2 jam pertama, aku masuk chapter 2. Ajar tentang kelebihan dan kekurangan dc motors. Kemudian ajar speed control of dc motor yang paling simple, iaitu 1. Adding armature resistance, 2. Adjusting armature voltage, 3. Adjusting field voltage.

Bagi yang pertama tu, kita add saja Adjustable resistance sesiri dengan armature, and then bila kita akan check speed when the resistance is varied. Senang jer kan... If the resistance increase, then the speed decrease.




Yang kedua pula, adjustable armature voltage. This method is very simple and very efficient to control the speed. When the armature voltage increase, the speed increases. In summary, the speed is proportional to armature voltage.





The last one is adjusting field voltage. When the field voltage increase, the speed reduce.


2 jam berikutnya, Untuk latihan pengiraan, bagi 2 example questions for them to solve .










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