public static string GetDiagnosticInfo(string devicename, byte[] bytes, double SampleFre, int SamplePoint, float RPM, out string DiagnosticInfo, out string DiagnosticAdvice)
{
double[] Waveform = ByteToSingle(bytes);
if (Waveform == null || SampleFre == 0 || SamplePoint == 0)
{
DiagnosticInfo = devicename + "没有诊断波形";
DiagnosticAdvice = null;
return(DiagnosticInfo + "\r\n" + DiagnosticAdvice);
}
if (RPM == 0)
{
DiagnosticInfo = devicename + "没有上传转速";
DiagnosticAdvice = null;
return(DiagnosticInfo + "\r\n" + DiagnosticAdvice);
}
double[] Frequency;
double[] Amplitude;
//频率间隔
double frequencyInterval = SampleFre / SamplePoint;
int length = (int)(SamplePoint / 2.56) + 1;
Frequency = new double[length];
for (int i = 0; i < length; i++)
{
Frequency[i] = frequencyInterval * i;
}
var output = D2FFT(Waveform, SamplePoint);
if (output != null)
{
Amplitude = output.Take(length).ToArray();
}
else
{
DiagnosticInfo = devicename + "没有频域波形";
DiagnosticAdvice = null;
return(DiagnosticInfo + "\r\n" + DiagnosticAdvice);
}
//频率
double frequency = RPM / 60;
double e1, e2, e3, e4, e5;
double m1, m2, m3, m4, m5;
GetEnergy(Frequency, Amplitude, frequency, frequencyInterval, 1, out e1, out m1);
GetEnergy(Frequency, Amplitude, frequency, frequencyInterval, 2, out e2, out m2);
GetEnergy(Frequency, Amplitude, frequency, frequencyInterval, 3, out e3, out m3);
GetEnergy(Frequency, Amplitude, frequency, frequencyInterval, 4, out e4, out m4);
GetEnergy(Frequency, Amplitude, frequency, frequencyInterval, 5, out e5, out m5);
//求时域有效值
var paras = CalculatePara(Waveform);
var rms = paras[0];
//最大幅值
var mMax = Amplitude.Max();
if (m1 >= mMax && m1 >= (rms * 0.1 * Math.Sqrt(2)) && m1 > m2 && m3 <= (rms * 0.1 * Math.Sqrt(2)))
{
DiagnosticInfo = devicename + "不平衡";
DiagnosticAdvice = "建议：怀疑轴系的动平衡情况，请检查转子是否存在弯曲或临时弯曲、转子零部件掉块、转子偏磨或结垢、轴承间隙大、设备底板结构松动等故障，如是皮带驱动，可能是皮带轮偏心引起。\r\n";
double probability = e1 * 100.0 / rms;
DiagnosticAdvice += "概率：" + probability.ToString("0") + "%";
}
else if (m2 >= mMax && m2 >= (rms * 0.1 * Math.Sqrt(2)) && m1 >= (rms * 0.1 * Math.Sqrt(2)) && m3 >= (rms * 0.1 * Math.Sqrt(2)))
{
DiagnosticInfo = devicename + "不对中";
DiagnosticAdvice = "建议：(1)请检查相关轴系的对中情况，如轴与轴的对中不良、同一轴的几个轴承安装同心或轴承间隙不等、 轴承座热膨胀不均、机壳变形或移位、 地基不均匀下沉。\r\n";
DiagnosticAdvice += " (2)另外，可能以下原因也表现为不对中现象：I.由于质量偏心而引起的动平衡不良(此时转子呈弓形弯曲),也可能造成对中不良，如果此时静态条件下对中良好，可以先解决动平衡不良故障，对中不良故障将随即消除. II.由于受热、负载过大等原因导致轴弯曲;\r\n";
DiagnosticAdvice += " (3).由于内环或外环安装不合适，导致轴承偏翘（翘曲）. III.轴承座松动。\r\n";
double probability = e2 * 100.0 / rms;
DiagnosticAdvice += "概率：" + probability.ToString("0") + "%";
}
else if (m1 >= (rms * 0.1 * Math.Sqrt(2)) && m2 >= (rms * 0.1 * Math.Sqrt(2)) && m3 >= (rms * 0.1 * Math.Sqrt(2)) && m4 >= (rms * 0.1 * Math.Sqrt(2)) && m5 >= (rms * 0.1 * Math.Sqrt(2)))
{
DiagnosticInfo = devicename + "轴承座松动、轴承松动、（基础）松动等";
DiagnosticAdvice = "建议：(1)请检查相关轴系的润滑、基础的紧固、相关轴系的轴承、轴承座安装情况.\r\n";
DiagnosticAdvice += " (2)受热、负载过大等原因导致轴弯曲；\r\n";
DiagnosticAdvice += " (3)内环或外环安装不合适，导致轴承偏翘（翘曲）。";
}
else if (mMax >= (rms * 0.3 * Math.Sqrt(2)))
{
double fMax = 0;
for (int i = 0; i < Amplitude.Length; i++)
{
if (Amplitude[i] == mMax)
{
fMax = Frequency[i];
break;
}
}
DiagnosticInfo = devicename + "频谱上有占能量很大比率的频率" + fMax.ToString("0.000") + "没有找到合适的故障原因";
DiagnosticAdvice = "建议：(1)没有设备结构模型，比如齿轮齿数、设置轴承型号等，不能确定故障的部位。\r\n";
DiagnosticAdvice += " (2)转速设置是否正确。";
}
else
{
DiagnosticInfo = devicename + "没有找到合适的故障原因, 请进一步观察。";
DiagnosticAdvice = null;
}
return(DiagnosticInfo + "\r\n" + DiagnosticAdvice);
}
public static NetWorkIO GetDiagnosticInfo(BaseWaveSignal vSg)
{
int classify = 0;
vSg.DiagnosticGrade = vSg.AlarmGrade;
vSg.DiagnosticResult = vSg.Result;
vSg.DiagnosticTime = vSg.ACQDatetime;
vSg.DiagnosticUnit = vSg.Unit;
if (vSg.Waveform == null || vSg.SampleFre == 0 || vSg.SamplePoint == 0)
{
vSg.DiagnosticInfo = "没有诊断波形";
vSg.DiagnosticAdvice = null;
return(null);
}
if (vSg.RPM == 0)
{
vSg.DiagnosticInfo = "没有上传转速";
vSg.DiagnosticAdvice = null;
return(null);
}
if (vSg.AlarmGrade == AlarmGrade.Invalid || vSg.AlarmGrade == AlarmGrade.Normal || vSg.AlarmGrade == AlarmGrade.DisConnect)
{
vSg.DiagnosticInfo = "没有发现故障";
vSg.DiagnosticAdvice = null;
return(null);
}
try
{
double[] Frequency;
double[] Amplitude;
//频率间隔
double frequencyInterval = vSg.SampleFre / vSg.SamplePoint;
int length = (int)(vSg.SamplePoint / 2.56) + 1;
Frequency = new double[length];
for (int i = 0; i < length; i++)
{
Frequency[i] = frequencyInterval * i;
}
var output = Algorithm.Instance.FFT2AndPhaseAction(vSg.Waveform, vSg.SamplePoint);
if (output != null)
{
Amplitude = output[0].Take(length).ToArray();
}
else
{
vSg.DiagnosticInfo = "没有频域波形";
vSg.DiagnosticAdvice = null;
return(null);
}
//频率
double frequency = vSg.RPM / 60;
double e1, e2, e3, e4, e5;
double m1, m2, m3, m4, m5;
GetEnergy(Frequency, Amplitude, frequency, frequencyInterval, 1, out e1, out m1);
GetEnergy(Frequency, Amplitude, frequency, frequencyInterval, 2, out e2, out m2);
GetEnergy(Frequency, Amplitude, frequency, frequencyInterval, 3, out e3, out m3);
GetEnergy(Frequency, Amplitude, frequency, frequencyInterval, 4, out e4, out m4);
GetEnergy(Frequency, Amplitude, frequency, frequencyInterval, 5, out e5, out m5);
//求时域有效值
var paras = Algorithm.CalculatePara(vSg.Waveform);
var rms = paras[0];
//最大幅值
var mMax = Amplitude.Max();
if (m1 >= mMax && m1 >= (rms * 0.1 * Math.Sqrt(2)) && m1 > m2 && m3 <= (rms * 0.1 * Math.Sqrt(2)))
{
vSg.DiagnosticInfo = "不平衡";
vSg.DiagnosticAdvice = "建议：怀疑轴系的动平衡情况，请检查转子是否存在弯曲或临时弯曲、转子零部件掉块、转子偏磨或结垢、轴承间隙大、设备底板结构松动等故障，如是皮带驱动，可能是皮带轮偏心引起。\r\n";
double probability = e1 * 100.0 / rms;
vSg.DiagnosticAdvice += "概率：" + probability.ToString("0") + "%";
classify = 1;
}
else if (m2 >= mMax && m2 >= (rms * 0.1 * Math.Sqrt(2)) && m1 >= (rms * 0.1 * Math.Sqrt(2)) && m3 >= (rms * 0.1 * Math.Sqrt(2)))
{
vSg.DiagnosticInfo = "不对中";
vSg.DiagnosticAdvice = "建议：(1)请检查相关轴系的对中情况，如轴与轴的对中不良、同一轴的几个轴承安装同心或轴承间隙不等、 轴承座热膨胀不均、机壳变形或移位、 地基不均匀下沉。\r\n";
vSg.DiagnosticAdvice += " (2)另外，可能以下原因也表现为不对中现象：I.由于质量偏心而引起的动平衡不良(此时转子呈弓形弯曲),也可能造成对中不良，如果此时静态条件下对中良好，可以先解决动平衡不良故障，对中不良故障将随即消除. II.由于受热、负载过大等原因导致轴弯曲;\r\n";
vSg.DiagnosticAdvice += " (3).由于内环或外环安装不合适，导致轴承偏翘（翘曲）. III.轴承座松动。\r\n";
double probability = e2 * 100.0 / rms;
vSg.DiagnosticAdvice += "概率：" + probability.ToString("0") + "%";
classify = 2;
}
else if (m1 >= (rms * 0.1 * Math.Sqrt(2)) && m2 >= (rms * 0.1 * Math.Sqrt(2)) && m3 >= (rms * 0.1 * Math.Sqrt(2)) && m4 >= (rms * 0.1 * Math.Sqrt(2)) && m5 >= (rms * 0.1 * Math.Sqrt(2)))
{
vSg.DiagnosticInfo = "轴承座松动、轴承松动、（基础）松动等";
vSg.DiagnosticAdvice = "建议：(1)请检查相关轴系的润滑、基础的紧固、相关轴系的轴承、轴承座安装情况.\r\n";
vSg.DiagnosticAdvice += " (2)受热、负载过大等原因导致轴弯曲；\r\n";
vSg.DiagnosticAdvice += " (3)内环或外环安装不合适，导致轴承偏翘（翘曲）。";
classify = 3;
}
else if (mMax >= (rms * 0.3 * Math.Sqrt(2)))
{
double fMax = 0;
for (int i = 0; i < Amplitude.Length; i++)
{
if (Amplitude[i] == mMax)
{
fMax = Frequency[i];
break;
}
}
vSg.DiagnosticInfo = "频谱上有占能量很大比率的频率" + fMax.ToString("0.000") + "没有找到合适的故障原因";
vSg.DiagnosticAdvice = "建议：(1)没有设备结构模型，比如齿轮齿数、设置轴承型号等，不能确定故障的部位。\r\n";
vSg.DiagnosticAdvice += " (2)转速设置是否正确。";
classify = 4;
}
else
{
vSg.DiagnosticInfo = "没有找到合适的故障原因, 请进一步观察。";
vSg.DiagnosticAdvice = null;
classify = 5;
}
NetWorkIO io = new DiagnosticModels.NetWorkIO();
io.Input = new double[] { e1, e2, e3, e4, e5 };
io.Output = DecToBinArray(classify);
return(io);
}
catch (Exception ex)
{
EventAggregatorService.Instance.EventAggregator.GetEvent <ThrowExceptionEvent>().Publish(Tuple.Create <string, Exception>("诊断异常", ex));
}
return(null);
}