Elevator active guidance system having a model-based multi-input multi-output controller

In an elevator active guidance system, in order to avoid the action of one actuator (23) from interfering with the action of another, a controller (21) is provided that uses a force law based on a model of the elevator (40), and uses information from all of the sensors (22) in combination to determi...

Full description

Saved in:
Bibliographic Details
Main Authors RAJAMANI; RAJESH, REMMERS; TIMOTHY M, ROBERTS; RANDALL K
Format Patent
LanguageEnglish
Published 02.02.1999
Edition6
Subjects
ELEVATORS
ESCALATORS OR MOVING WALKWAYS
HAULING
HOISTING
LIFTING
PERFORMING OPERATIONS
TRANSPORTING
Online AccessGet full text

Cover

More Information
Summary:In an elevator active guidance system, in order to avoid the action of one actuator (23) from interfering with the action of another, a controller (21) is provided that uses a force law based on a model of the elevator (40), and uses information from all of the sensors (22) in combination to determine, according to the force law, the force each actuator (23) should provide. The model of the elevator (40) is used to determine how the elevator (40) will respond to the forces exerted by the actuators (23). In the preferred embodiment, the elevator (40) is assumed to respond to the actuator forces as a rigid body. The full model is built up from this basic assumption, finally including all of the geometric and inertial attributes of the elevator necessary to describe its rigid body motion in response to forces from actuators (23).
Bibliography:Application Number: US19960703493