Open Access

Table 1.

Specifications of the networked magnetic levitation steel ball movement system

Symbol Description Value/Unit
x1(t) Position of magnetic levitation ball at time t –/mm
x2(t) Velocity of magnetic levitation ball at time t –/mm/s
u(t) Voltage across the suspension winding coil at time t –/V
y(t) Actual output of the system at time t
y r (t) Desired system output at time t
d(t) External disturbance input at time t

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