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Model Predictive Control

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11.4 State Feedback Solution of RHC, 2-Norm Case 211<br />

⎡ 0.00 −1.00 ⎤ ⎡ 0.00 0.00 ⎤<br />

0.00 1.00 0.00 0.00 ⎡ 1.00 ⎤<br />

⎢ 0.00 0.00 ⎥ ⎢ 1.00 1.00 ⎥ 1.00<br />

⎢ −1.00 0.00 ⎥ ⎢ −1.00 −1.00 ⎥ ⎢ 10.00 ⎥<br />

⎢ 0.00 0.00 ⎥ ⎢ −1.00 −1.00 ⎥ ⎢ 10.00 ⎥<br />

⎢ 1.00 0.00 ⎥ ⎢<br />

⎢ −1.00 0.00 ⎥ ⎢ 1.00 1.00 ⎥ ⎢ 10.00 ⎥<br />

⎢ −1.00 −1.00 ⎥ ⎢ 0.00 0.00 ⎥ ⎢ 10.00 ⎥<br />

⎥ ⎢ −1.00 −1.00 ⎥ ⎢ 10.00 ⎥<br />

⎥ ⎢ 10.00 ⎥<br />

⎢ 1.00 0.00 ⎥ ⎢ 0.00 0.00 ⎥ ⎢ 10.00 ⎥<br />

⎢ 1.00 1.00 ⎥ ⎢ 1.00 1.00 ⎥ ⎢<br />

⎢ 0.00 0.00 ⎥ ⎢ 1.00 1.00 ⎥ ⎢ 10.00 ⎥<br />

⎢ −1.00 0.00 ⎥ ⎢ −1.00 −1.00 ⎥ ⎢ 5.00 ⎥<br />

⎢ 0.00 0.00 ⎥ ⎢<br />

G0 = ⎢ 1.00 0.00 ⎥ ⎢ −1.00 −1.00 ⎥ ⎢ 5.00 ⎥<br />

⎥ ⎢ 5.00 ⎥<br />

⎢ −1.00 0.00 ⎥ , E0 = ⎢ 1.00 1.00 ⎥<br />

⎥ ⎢ −1.00 −2.00 ⎥ , W0 = ⎢ 5.00 ⎥<br />

⎢ 1.00 ⎥<br />

⎢ 1.00 0.00 ⎥ ⎢ 1.00 2.00 ⎥ ⎢ 1.00 ⎥<br />

⎢ 0.00 0.00 ⎥ ⎢ 1.00 0.00 ⎥ ⎢ 10.00 ⎥<br />

⎢ 0.00 0.00 ⎥ ⎢ 0.00 1.00 ⎥ ⎢ 10.00 ⎥<br />

⎢ 0.00 0.00 ⎥ ⎢ −1.00 0.00 ⎥ ⎢<br />

⎢ 0.00 0.00 ⎥ ⎢ ⎥ ⎢ 10.00 ⎥<br />

⎢ 0.00 0.00 ⎥ ⎢ 0.00 −1.00 ⎥ ⎢ 10.00 ⎥<br />

⎢ 0.00 0.00 ⎥ ⎢ 1.00 0.00 ⎥ ⎢ 5.00 ⎥<br />

⎢ 0.00 0.00 ⎥ ⎢ 0.00 1.00 ⎥ ⎢ 5.00 ⎥<br />

⎥ ⎢ −1.00 0.00 ⎥ ⎢ 5.00 ⎥<br />

⎢ 0.00 0.00 ⎥ ⎢ 0.00 −1.00 ⎥ ⎢ 5.00 ⎥<br />

⎣ −1.29 −0.93 ⎦ ⎢ ⎥<br />

1.29 0.93 ⎣ −0.93 −0.93 ⎣ 0.58 ⎦<br />

⎦ 0.58<br />

0.93 0.93<br />

1.41 0.70<br />

1.90<br />

0.70 0.70<br />

−1.41 −0.70<br />

1.90<br />

−0.70 −0.70<br />

(11.36)<br />

The corresponding polyhedral partition of the state-space is depicted in Fig. 11.6(b).<br />

The RHC law is:<br />

⎧<br />

⎪⎩<br />

[ −0.61 −1.61 ] x if<br />

1.00 if<br />

1.00 if<br />

⎪⎨<br />

1.00 if<br />

u =<br />

− 1.00 if<br />

− 1.00 if<br />

− 1.00 if<br />

[ −0.45 −1.44 ] x − 0.45 if<br />

[ −0.45 −1.44 ] x + 0.45 if<br />

⎡<br />

⎣<br />

⎡<br />

⎢<br />

⎣<br />

⎡<br />

⎣<br />

1.00 0.00<br />

−1.00 0.00<br />

−0.36 −0.93<br />

0.36 0.93<br />

0.71 0.70<br />

−0.71 −0.70<br />

1.00 0.00<br />

−1.00 0.00<br />

−0.71 −0.71<br />

−0.21 −0.98<br />

0.21 0.98<br />

−0.32 −0.95<br />

0.27 0.96<br />

0.29 0.96<br />

1.00 0.00<br />

−1.00 0.00<br />

−0.27 −0.96<br />

−0.45 −0.89<br />

0.36 0.93<br />

⎤<br />

⎡<br />

⎦ x ≤ ⎣<br />

⎤<br />

⎡<br />

⎥ ⎢<br />

⎦ x ≤ ⎣<br />

⎤<br />

⎡<br />

⎦ x ≤ ⎣<br />

5.00<br />

5.00<br />

0.58<br />

0.58<br />

1.90<br />

1.90<br />

5.00<br />

5.00<br />

3.54<br />

1.67<br />

⎤<br />

−0.98<br />

1.79<br />

−1.13<br />

−0.36<br />

5.00<br />

5.00<br />

1.13<br />

1.65<br />

−0.58<br />

<br />

−1.00 0.00 5.00<br />

−0.21 −0.98 x ≤ 0.98<br />

0.45 0.89<br />

−1.65<br />

⎡<br />

⎣<br />

−0.29 −0.96<br />

1.00 0.00<br />

−1.00 0.00<br />

0.27 0.96<br />

0.45 0.89<br />

−0.36 −0.93<br />

⎤<br />

⎡<br />

⎦ x ≤ ⎣<br />

−0.36<br />

5.00<br />

5.00<br />

1.13<br />

1.65<br />

−0.58<br />

<br />

1.00 0.00 5.00<br />

0.21 0.98 x ≤ 0.98<br />

−0.45 −0.89<br />

−1.65<br />

⎡<br />

⎢<br />

⎣<br />

1.00 0.00<br />

−1.00 0.00<br />

0.71 0.71<br />

−0.21 −0.98<br />

0.21 0.98<br />

0.32 0.95<br />

−0.27 −0.96<br />

⎤<br />

⎡<br />

⎥ ⎢<br />

⎦ x ≤ ⎣<br />

5.00<br />

5.00<br />

3.54<br />

−0.98<br />

1.67<br />

1.79<br />

−1.13<br />

<br />

1.00 0.00 5.00<br />

0.29 0.96 x ≤ 0.36<br />

−0.71 −0.70<br />

−1.90<br />

<br />

−1.00 0.00 5.00<br />

−0.29 −0.96 x ≤ 0.36<br />

0.71 0.70<br />

−1.90<br />

⎦ (Region #1)<br />

⎤<br />

⎥<br />

⎦ (Region #2)<br />

⎤<br />

⎦ (Region #3)<br />

⎤<br />

(Region #4)<br />

⎦ (Region #5)<br />

⎤<br />

(Region #6)<br />

⎥<br />

⎦ (Region #7)<br />

(Region #8)<br />

(Region #9)<br />

The union of the regions depicted in Fig. 11.6(b) is X0. Note that from Theorem 11.2

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