c6_pllpost.m

本程序是一个PLL仿真程序

% File : c6_PLLpost.m
kk = 0;
while kk == 0
    k = menu('Phase Lock Loop Postprocessor',...
        'Input Frequency and VCO Frequency','Input Phase and VCO Phase',...
        'Frequency Error','Phase Error','Phase Plane Plot',...
        'Phase Plane and Time Domain Plots','Exit Program');
    if k == 1
        plot(t,fin,t,fvco)
        title('Input Frequency and VCO Frequency')
        xlabel('Time - Seconds'); ylabel('Frequency - Hz');
        pause
    elseif k == 2
        pvco = phin-phierror;
        plot(t,phin,t,pvco)
        title('Input Phase and VCO Phase')
        xlabel('Time - Seconds'); ylabel('Phase - Randians');
        pause
    elseif k == 3
        plot(t,freqerror);
        title('Frequency Error')
        xlabel('Time - Seconds'); ylabel('Frequency Error - Hz');
        pause
    elseif k == 4
        plot(t,phierror);
        title('Phase Error')
        xlabel('Time - Seconds'); ylabel('Phase Error - Radians');
        pause
    elseif k == 5
        ppplot
    elseif k == 6
        subplot(211);
        phierrn = phierror/pi;
        plot(phierrn,freqerror);
        grid;
        title('Phase Plane Plot');
        xlabel('Phase Error /Pi'); ylabel('Frequency Error - Hz');
        subplot(212)
        plot(t,fin,t,fvco); grid
        title('Input Frequency and VCO Frequency')
        xlabel('Time - Seconds'); ylabel('Frequency - Hz');
        subplot(111)
    elseif k == 7
        kk =1;
    end
end