c++ - 软件电容器

Closed. This question is off-topic。它当前不接受答案。
                            
                        
                    
                
                            
                                
                
                        
                            
                        
                    
                        
                            想改善这个问题吗？ Update the question，所以它是on-topic，用于堆栈溢出。
                        
                        7年前关闭。
                                                                                            
                
        
我需要使用一个软件电容器。

我有一个带有n个样本的信号。我需要过滤它。

是否有一个c ++库（或单个函数），其中包含软件电容器和其他电子组件。

最佳答案

如果您想要的只是一个非常简单的函数，即可将自定义过滤器应用于样本数组，则应做到这一点...只需用更合适的方程式替换电容器（）函数中循环中的逻辑即可。

#include <stdio.h>
#include <math.h>

#define INRADS *3.1416/180.0

#define NUM_SAMPLES 1000

double capVoltage = 0;
//this is a simple (capacitor like) filter.
int capacitor(double* sample, long samples, double capacitorValue, double totalTime, double initialCapVoltage){

    capVoltage = initialCapVoltage;

    for (int i = 0; i<= samples-1; i++){ //loop through all the samples
        if (sample[i] > capVoltage){ //charge the cap
            //put your math in here, calculate voltages based on capacitorValue, totalTime and capVoltage
            //this next line is just for testing purposes
            capVoltage += 0.2;
        }
        if (sample[i] < capVoltage){ //discharge the cap
            //put your math in here, calculate voltages based on capacitorValue, totalTime and capVoltage
            //this next line is just for testing purposes
            capVoltage -= 0.2;
        }
        sample[i] = capVoltage;
        printf("Changed sample %d to %f \n", i, sample[i]);
    }

}

double* myVoltageSamples; //generic wave sample
double* myVoltageSamples2; //generic wave sample

int main(){

    myVoltageSamples = new double[NUM_SAMPLES]; //let's say this is 1 sample every millisecond for one second
    myVoltageSamples2 = new double[NUM_SAMPLES]; //let's say this is 1 sample every millisecond for one second

    for (int i = 0; i<= NUM_SAMPLES-1; i++){ //put some data in the sample array
        myVoltageSamples[i] = sin( ( i ) INRADS );      // a simple, generic sin wave
        myVoltageSamples2[i] = myVoltageSamples[i];
        printf("Adding %f to the sample.\n", myVoltageSamples[i]);
    }
    //we now have a generic signal

    //apply your basic (capacitor) filter
    capacitor(myVoltageSamples2, NUM_SAMPLES, 0.001, 1000, 0); //1mF cap, one second, start voltage = 0

    //compare the start and finish:
    printf("first signal:\n");
    for (int i = 0; i<= NUM_SAMPLES-1; i++){ //put some data in the sample array
        for (int j = 0; j<=((int)(myVoltageSamples[i]*20))+20-1; j++){
            printf(".");
        }
        printf("X\n");
    }

    printf("second signal:\n");
    for (int i = 0; i<= NUM_SAMPLES-1; i++){ //put some data in the sample array
        for (int j = 0; j<=((int)(myVoltageSamples2[i]*20))+20-1; j++){
            printf(".");
        }
        printf("X\n");
    }

    delete myVoltageSamples;
    delete myVoltageSamples2;

}

关于c++ - 软件电容器，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/11540300/