12-09-2012, 05:33 PM
Simulation Based Design of a High-Speed Elevator System
Simulation Based Design.pdf (Size: 208.77 KB / Downloads: 69)
Problem Domain
Elevator systems are typical examples for complex mechatronic systems. High
safety-relevant demands are special properties of these systems. Practical experiments for the
function validation of developed components (subsystems) and their interactions are
mandatory necessary. However, the opportunities for experimental system optimization are
often limited by the system size and complexity. Experiments with system versions are too
expensive or impossible because of safety requirements. Furthermore, the investigation of
relevant operating conditions is very complicated. This difficult design situation can be
improved by accompanying system simulations.
Simulation Scenario
In Homework 2, we defined the design objectives as MAXIMIZE EFFICIENCY and
MAXIMIZE PASSENGER COMFORT. Based on these objectives, a set of attributes were
presented such as maximum speed, running time and maximum acceleration as to measure the
performance. Accordingly the simulation scenario will mainly focus on testing different
alternatives of the components in Table 2 to find the combinations that contribute to good
performance based on measurement of those attributes. For example, given that the elevator is
going to travel from 1st floor to 10th with certain weight in the car, we will measure the travel
time, maximum speed, maximum acceleration and other attributes in the simulation under
different configurations of the system components.
Car & Counter weight
Car and Counter Weight are modified from sliding mass component. All the mass of
Car and Counter Weight are suspended by the tope on sheave. According to literature, typical
mass of a car is 1600 kg, and standard max load is 2000kg. The mass of counter weight is
usually designed as the sum of Car and half of max load, which is 1600+2000/2=2600kg.
Therefore, in the simulations in Task 5, such weight setting is regarded as standard.
During the traveling period, wind in the elevator shaft provides resistance