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Question

我有这些文字错过阵列什么问题平均值.. 我的程序工作每500ms，我想先读4个双重价值，并采取这些值的平均值，然后获得下一个4双价值观等...我写了一些关于这个，你可以看看这个？

if (u_dcbus_pv_act[i] > 0 && i != 0) 
{ 
    u_dcbus_pv = u_dcbus_pv_act[i]; 
    p_dcbus_pv = p_dcbus_pv_act[i]; 
} 
if (i >= 3) 
{ 
    for (int j = 0; j < 4; j++) 
    { 
     total_u += u_dcbus_pv; 
     total_p += p_dcbus_pv; 
    } 

    average_u = total_u/4; 
    average_p = total_p/4; 
    u_dcbus_target = average_u; 
    p_dcbus_pv_avg = average_p; 
} 

Answer 1

从我了解你的描述，我会做这样的事情：

/* add current samples to totals */ 
total_u += u_dcbus_pv_act[i]; 
total_p += p_dcbus_pv_act[i]; 

/* every fourth tick, calc average and reset totals */ 
if (i % 4 == 0) 
{ 
    average_u = total_u/4; 
    average_p = total_p/4; 
    total_u = 0; 
    total_p = 0; 
} 
u_dcbus_target = average_u; 
p_dcbus_pv_avg = average_p; 
i++;