Design of Magnetic Flux Feedback Controller in Hybrid Suspension System

Table 1

Symbols of hybrid suspension system.

Signs	Signification
𝜙𝑚	Gap flux
𝜙𝑇	Main flux
𝜙𝐿	Leaking flux
𝜓	Gap flux linkage
𝑢(𝑡)	Voltage of magnetic coil
𝑊𝑚	Magnetic field energy in bulk V
𝑅	Resistance of magnetic coil
𝐵	Gap flux density
𝜇0	Magnetic permeability of atmosphere
𝜇𝑝𝑚	Magnetic permeability of permanent magnet
𝜇𝑟	Magnetic permeability of permanent magnet
𝐻𝑐	Magnetic coercive force of permanent magnet
𝐹𝑚	Magnetic field potential
𝑅𝑚	Magnetic resistance
𝐴	Magnetic pole area
𝑖(𝑡)	Current of magnetic coil
𝑤𝑚	Magnetic field energy density
𝑁	Turn of magnetic coil
𝑧(𝑡)	Gap in electromagnet and track
𝐹	Electromagnetic force
𝑀	Total quality of suspension object
ℎ𝑝𝑚	Thickness of permanent magnet
𝑔	Acceleration of gravity