Plotting Frequency Characteristics of a Second-Order System with Different Damping Ratios Using MATLAB

First, write out the fractional expression of the second-order system, determine the frequency range to be plotted, and then use the bode function to plot the frequency characteristic curves of the system for different damping values. % Plotting frequency characteristics for different damping ratios wn1=10; zeta1=0.2:0.1:1.2; w1=logspace(-1,2,100); num1=wn1*wn1; figure(1); for k1=zeta1 den1=[1.0 2*k1*wn1 wn1*wn1 ]; … Read more

Analysis of Renesas Sensorless FOC Solutions (Part 1)

Analysis of Renesas Sensorless FOC Solutions (Part 1)

Author Introduction Engaged in the control development of three-phase asynchronous motors and permanent magnet synchronous motors for over ten years, proficient in sensorless FOC control. The products involved include inverters, servos, power tools, vacuum cleaners, propellers, drones, air compressors, etc. The power range covers 100W to 100kW, and the voltage range includes 14VDC to 660VAC. … Read more