In this paper, two different PID control methods
are described to control of Maglev Guiding System for Linear
Elevator. The linear elevator driven by permanent magnet linear
synchronous motor (PMLSM) use the method to adopt the
magnetic guidance system to control the PMLSM gap which
changes frequently and can impact the vertical thrust and control
the level vibration and noise in the process of start, operation,
and stop to make passenger feel comfortable. The first PID
control method is based on feedback linearization. In this
method, single Maglev guiding systems are controlled to maintain
the air gap of linear motor in the reference value independently.
To achieve a more practical control method and better operation
of maglev guiding system, this method is corrected and a
simultaneous control method of two counterpart Maglev systems
is proposed. MATLAB modeling of these systems are used in this
paper. Simulation results show that the second method has a
better performance.