Elevator Dynamic Compensation Control System for Vibration Mitigation
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Solution Overview
Problem
Elevator systems experience disruptive oscillations and vibrations due to changes in load and stretching/contracting of load-bearing members, which existing technologies fail to effectively mitigate, leading to an uneven user experience and potential safety issues.
Innovation Solution
Implementing a dynamic compensation control system with two motion state sensors, one on the elevator machine and one on the elevator car, connected to a computing system that monitors and controls the motion states to minimize oscillations, vibrations, and bounce by activating or deactivating the dynamic compensation control mode based on sensor signal tolerance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If dynamic compensation control mode is activated to minimize oscillations and vibrations, then ride smoothness is improved, but system complexity increases due to additional sensors and control mechanisms
Solution Approach 1:
The system employs feedback control by continuously monitoring motion state sensor signals from both the elevator machine and elevator car, comparing these signals against expected values, and adjusting the elevator machine's operation in real-time to minimize oscillations and vibrations during landing operations
Solution Approach 2:
Motion state sensors serve as intermediary devices that measure and transmit information about the elevator car's position, velocity, and acceleration to the control system, enabling indirect control of oscillations without direct mechanical intervention
2Reliability
If motion state sensors are continuously monitored for operational status, then system reliability is improved, but measurement and detection difficulty increases
Solution Approach 1:
The system implements feedback monitoring by continuously comparing motion state sensor signals from the elevator car against corresponding signals from the elevator machine, automatically detecting discrepancies that indicate sensor failure or abnormal conditions
Solution Approach 2:
The monitoring system performs self-diagnosis by analyzing its own sensor signals to determine operational status, automatically identifying when a sensor has failed without requiring external inspection or complex diagnostic procedures
3Object-affected harmful factors
If dynamic compensation control is used to reduce bounce motion, then passenger comfort is improved, but energy consumption increases due to continuous active control
Solution Approach 1:
The dynamic compensation control operates periodically during critical phases such as approach and landing, rather than continuously throughout the entire elevator cycle, reducing energy consumption while maintaining effectiveness during periods when bounce motion is most problematic
Data Source
AI summary
Methods and systems for monitoring a dynamic compensation control system of an elevator system are provided. The methods and systems include monitoring a first motion state sensor signal generated by a first motion state sensor, the first motion state sensor associated with an elevator machine, monitoring a second motion state sensor signal generated by a second motion state sensor, the second motion state sensor located on an elevator car, determining an operational status of the second motion state sensor based on an analysis of the first motion state sensor signal and the second motion state sensor signal, and when it is determined that a failure status of the second motion state sensor is present, the method further comprises deactivating a dynamic compensation control mode of operation of the elevator system.