Phase-lead compensators are used in feedback control, usually to improve gain margins and add additional damping to a system.
This function provides an easy way to construct a phase-lead compensator with specified centre frequency and lead. The gain at the centre frequency is zero, making it particularly useful for adding phase margin at a specified crossover frequency.
PHLEAD extends the functionality of Control System Toolbox, and is compatible with it.
C = PHLEAD(W, LEADDEG) returns a state-space representation of a phase ead compensator giving the specified phase lead angle LEADDEG and unity gain at W rad/sec.
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