添加项目文件。

测试用/SignalProcessor.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace 测试用
+{
+
+    public class SignalProcessor
+    {
+        /// <summary>
+        /// 将采样数据按周期转换为真有效值并拟合为直流信号
+        /// </summary>
+        /// <param name="sampledData">采样数据列表</param>
+        /// <param name="samplingRate">采样率(Hz)</param>
+        /// <param name="signalFrequency">信号频率(Hz)</param>
+        /// <returns>每个周期的RMS值列表(直流信号)</returns>
+        public static List<double> ConvertToRmsPerPeriod(List<double> sampledData, double samplingRate = 200000, double signalFrequency = 1000)
+        {
+            if (sampledData == null || sampledData.Count == 0)
+                return new List<double>();
+
+            // 计算每个周期的采样点数
+            int samplesPerPeriod = (int)(samplingRate / signalFrequency);
+            if (samplesPerPeriod <= 0)
+                throw new ArgumentException("采样率必须大于信号频率");
+
+            // 计算完整周期数
+            int completePeriods = sampledData.Count / samplesPerPeriod;
+
+            List<double> rmsValues = new List<double>(completePeriods);
+
+            // 对每个完整周期计算RMS值
+            for (int i = 0; i < completePeriods; i++)
+            {
+                int startIndex = i * samplesPerPeriod;
+                var periodSamples = sampledData.Skip(startIndex).Take(samplesPerPeriod).ToList();
+                double rms = CalculateTrueRms(periodSamples);
+                rmsValues.Add(rms);
+            }
+
+            return rmsValues;
+        }
+
+        /// <summary>
+        /// 计算直流拟合信号(将RMS值扩展为与原信号相同长度的直流信号)
+        /// </summary>
+        public static List<double> GenerateDcSignal(List<double> rmsValues, double samplingRate = 200000, double signalFrequency = 1000)
+        {
+            if (rmsValues == null || rmsValues.Count == 0)
+                return new List<double>();
+
+            int samplesPerPeriod = (int)(samplingRate / signalFrequency);
+            List<double> dcSignal = new List<double>();
+
+            // 将每个RMS值重复samplesPerPeriod次以生成直流信号
+            foreach (var rms in rmsValues)
+            {
+                dcSignal.AddRange(Enumerable.Repeat(rms, samplesPerPeriod));
+            }
+
+            return dcSignal;
+        }
+
+        private static double CalculateTrueRms(List<double> samples)
+        {
+            if (samples == null || samples.Count == 0)
+                return 0;
+
+            double sumOfSquares = samples.Sum(x => x * x);
+            double meanOfSquares = sumOfSquares / samples.Count;
+            return Math.Sqrt(meanOfSquares);
+        }
+    }
+}