Input-state linearization is a control technique used to transform a nonlinear system into an equivalent linear system through a suitable choice of input and state variables. This method relies on the concept of feedback linearization, where the nonlinear dynamics of the system are canceled out by appropriately designed input signals, resulting in a system that can be analyzed and controlled using linear control methods. It is particularly useful in systems where exact feedback linearization is possible, allowing for easier stability analysis and controller design.
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