Abstract
An active guide system has been developed to suppress vibrations of elevator cars. When elevators travel at high speed, horizontal vibrations of the car occur due to guide rail deformations, and the ride quality deteriorates. Human beings are sensitive to horizontal vibrations around 2Hz, and therefore, we need to design controllers of an active guide system taking into consideration human sensitivity to vibrations. First, we designed H^∞ controllers because we can address sensitivity to vibrations using this design method. Then we reduced the order of the controllers so that on-site parameter tuning time can be reduced. We demonstrated that the maximum amplitude of vibrations of a car with this control could be reduced to almost half the amplitude compared to a car without the control.
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