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121 | 121 | "source": [ |
122 | 122 | "### Mathematical Formulation\n", |
123 | 123 | "\n", |
124 | | - "TBD\n", |
125 | | - "\n", |
126 | | - "$\\begin{equation*}\n", |
127 | | - "F=\n", |
128 | | - "\\begin{bmatrix}\n", |
129 | | - "1 & 0 & 0 & 0\\\\\n", |
130 | | - "0 & 1 & 0 & 0\\\\\n", |
131 | | - "0 & 0 & 1 & 0 \\\\\n", |
132 | | - "0 & 0 & 0 & 0 \\\\\n", |
133 | | - "\\end{bmatrix}\n", |
134 | | - "\\end{equation*}$" |
| 124 | + "Motion model is\n", |
| 125 | + "\n", |
| 126 | + "$\\dot{x}=vcos\\theta$\n", |
| 127 | + "\n", |
| 128 | + "$\\dot{y}=vsin\\theta$\n", |
| 129 | + "\n", |
| 130 | + "$\\dot{\\theta}=\\frac{v}{WB}sin(u_{\\delta})$ (tan is not good for optimization)\n", |
| 131 | + "\n", |
| 132 | + "$\\dot{v}=u_a$\n", |
| 133 | + "\n", |
| 134 | + "Cost function is \n", |
| 135 | + "\n", |
| 136 | + "$J=\\frac{1}{2}(u_a^2+u_{\\delta}^2)-\\phi_a d_a-\\phi_\\delta d_\\delta$\n", |
| 137 | + "\n", |
| 138 | + "Input constraints are\n", |
| 139 | + "\n", |
| 140 | + "$|u_a| \\leq u_{a,max}$\n", |
| 141 | + "\n", |
| 142 | + "$|u_\\delta| \\leq u_{\\delta,max}$\n", |
| 143 | + "\n", |
| 144 | + "So, Hamiltonian is\n", |
| 145 | + "\n", |
| 146 | + "$J=\\frac{1}{2}(u_a^2+u_{\\delta}^2)-\\phi_a d_a-\\phi_\\delta d_\\delta\\\\ +\\lambda_1vcos\\theta+\\lambda_2vsin\\theta+\\lambda_3\\frac{v}{WB}sin(u_{\\delta})+\\lambda_4u_a\\\\ \n", |
| 147 | + "+\\rho_1(u_a^2+d_a^2+u_{a,max}^2)+\\rho_2(u_\\delta^2+d_\\delta^2+u_{\\delta,max}^2)$\n", |
| 148 | + "\n", |
| 149 | + "Partial differential equations of the Hamiltonian are:\n", |
| 150 | + "\n", |
| 151 | + "$\\frac{\\partial H}{\\partial \\bf{x}}=\\\\ \n", |
| 152 | + "[\\frac{\\partial H}{\\partial x}= 0,\\\\\n", |
| 153 | + "\\frac{\\partial H}{\\partial y}= 0,\\\\\n", |
| 154 | + "\\frac{\\partial H}{\\partial \\theta}= -\\lambda_1vsin\\theta+\\lambda_2vcos\\theta,\\\\\n", |
| 155 | + "\\frac{\\partial H}{\\partial v}=-\\lambda_1cos\\theta+\\lambda_2sin\\theta+\\lambda_3\\frac{1}{WB}sin(u_{\\delta})]\\\\\n", |
| 156 | + "$\n", |
| 157 | + "\n", |
| 158 | + "\n", |
| 159 | + "$\\frac{\\partial H}{\\partial \\bf{u}}=\\\\ \n", |
| 160 | + "[\\frac{\\partial H}{\\partial u_a}= u_a+\\lambda_4+2\\rho_1u_a,\\\\\n", |
| 161 | + "\\frac{\\partial H}{\\partial u_\\delta}= u_\\delta+\\lambda_3\\frac{v}{WB}cos(u_{\\delta})+2\\rho_2u_\\delta\\\\\n", |
| 162 | + "\\frac{\\partial H}{\\partial d_a}= -\\phi_a+2\\rho_1d_a,\\\\\n", |
| 163 | + "\\frac{\\partial H}{\\partial d_\\delta}=-\\phi_\\delta+2\\rho_2d_\\delta]\\\\\n", |
| 164 | + "$" |
135 | 165 | ] |
136 | 166 | }, |
137 | 167 | { |
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