subplot(521), plot(time, u), grid on, xlabel('time'), ylabel('input u')
subplot(522), plot(time, x1), grid on, xlabel('time'), ylabel('X1')
subplot(523), plot(time, x2), grid on, xlabel('time'), ylabel('X2')
subplot(524), plot(time, x3), grid on, xlabel('time'), ylabel('X3')
subplot(525), plot(time, x4), grid on, xlabel('time'), ylabel('X4')
subplot(526), plot(time, x5), grid on, xlabel('time'), ylabel('X5')
subplot(527), plot(time, x6), grid on, xlabel('time'), ylabel('X6')
subplot(528), plot(time, x7), grid on, xlabel('time'), ylabel('X7')
subplot(529), plot(time, y), grid on, xlabel('time'), ylabel('output y')


