| ZMP | Zero moment point |
| CoM | Center of mass |
| LIP | Linear inverted pendulum |
| VHIP | Variable-height inverted pendulum |
| TO | Trajectory optimization |
| NLP | Nonlinear programming |
| to | Take-off |
| td | touchdown |
| DoF | Degree of freedom |
| ZMP | Zero moment point |
| CoM | Center of mass |
| LIP | Linear inverted pendulum |
| VHIP | Variable-height inverted pendulum |
| TO | Trajectory optimization |
| NLP | Nonlinear programming |
| to | Take-off |
| td | touchdown |
| DoF | Degree of freedom |