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Re: 有關AN1017的SIN CONTROL問題,急!!
#2
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source code 為 512000/Period
1.每個 hall sensor clock 為 360度, 一次 Capture 到的寬度為180度.給值 32768.
2. Capture 時間單位為 tmr3/64 -> 3.2us. Capture 到的時間為 Period * 3.2 us
3. PWM Period = 50us. 一次 Caputure 到的時間可發生的 pwm 中斷次數 = Period * 3.2 / 50
4. PhaseInc = 32768 / Period * 3.2 /50 = 512000/Period.

發表於: 2007/4/20 22:44
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有關AN1017的SIN CONTROL問題,急!!
#1
新會員
新會員


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各位先進:
我正在用AN1017的SAMPLE CODE來控制自家的馬達,在程式中有一個叫PhaseInc的變數,它是由
PhaseInc = __builtin_divud(128000UL, Period);
// Phase increment is used
// by the PWM isr (SVM)
請問有誰知道為什麼是128000/Period呢?
感激不盡!!!!

發表於: 2007/3/27 8:32
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