中文说明：DC-DC部分采用定功率单环控制，包括随机梯度算法，相对梯度算法，用于特征降维，特征融合，相关分析等,插值与拟合的matlab实现，详细画出了时域和频域的相关图，关于超声波倒车雷达测距的。
English Description：
DC-DC converter using power single-loop control, including stochastic gradient algorithm, algorithm of relative gradient used to feature dimension reduction, feature integration, correlation analysis, interpolation and fitting the MATLAB realization, outlined in detail the time domain and frequency domain correlation diagram, ultrasonic parking sensor range.