Damping ratio

Control (management)

Engineering

Natural frequency

Pole–zero plot

Biology

Bandwidth (computing)

Actuator

Tracking (education)

Full state feedback

Pedagogy

Transfer function

Telecommunications

Economics

Vibration

Computer science

Acoustics

Controller (irrigation)

Computer network

Physics

Psychology

Position (finance)

Agronomy

Artificial intelligence

Finance

Control theory (sociology)

Electrical engineering

Positive Velocity and Position Feedback (PVPF) is a widely used control scheme in lightly damped resonant systems with collocated sensor actuator pairs. The popularity of PVPF is due to the ability to achieve a chosen damping ratio by repositioning the poles of the system. The addition of a necessary tracking controller causes the poles to deviate from the intended location and can be a detriment to the damping achieved. By designing the PVPF and tracking controllers simultaneously, the optimal damping and tracking can be achieved. Simulations show full damping of the first resonant mode whilst also achieving bandwidth greater than the natural frequency of the plant, allowing for high speed scanning with accurate tracking.

Simultaneous optimization of damping and tracking controller parameters via selective pole placement for enhanced positioning bandwidth of nanopositioners