Multi-Motor Lifting Control for Synchronized Screen Movement
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Solution Overview
Problem
Existing technologies face challenges in achieving synchronous lifting of multiple screens in vehicles due to inherent deviations in motors and screens, leading to inconsistent lifting speeds and resistance, which hinders multi-screen linkage functionality.
Innovation Solution
A multi-element synchronous lifting control system and method using a drive control module to adjust and compensate for motor outputs through adaptive control algorithms, including PWM duty cycle adjustments and PID parameters, ensuring synchronized lifting of multiple movable elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If single driving force output is used for motors, then device complexity is reduced, but lifting speed synchronization deteriorates
Solution Approach 1:
The system dynamically adjusts PWM duty cycle parameters for each motor based on real-time position detection and deviation calculation. The drive control module modifies driving parameters (duty cycle) to compensate for motor deviations, enabling synchronized lifting without requiring complex individual motor control systems.
Solution Approach 2:
The system implements a feedback mechanism where the drive control module continuously detects motor output and position information, calculates deviations between multiple screens, and adjusts the driving force accordingly. This closed-loop control ensures synchronization while maintaining relatively simple system architecture.
2Speed
If motor output is increased to compensate for deviations, then lifting speed synchronization is improved, but energy consumption increases
Solution Approach 1:
The system applies compensation only to the extent necessary to achieve synchronization. The drive control module calculates the exact deviation between screens and adjusts motor output accordingly, avoiding excessive energy consumption while ensuring synchronized lifting. The PWM duty cycle is adjusted partially rather than maximally.
3Speed
If adaptive adjustment control is implemented, then lifting speed synchronization is improved, but device complexity increases
Solution Approach 1:
The system replaces complex mechanical synchronization mechanisms with electronic control algorithms. The drive control module uses software-based adaptive adjustment and PWM duty cycle modification to achieve synchronization, eliminating the need for complex mechanical linkages or additional synchronization hardware.
Data Source
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AI summary
Disclosed are a multi-element synchronous lifting control system and a method for controlling multi-elements to lift synchronously. The system at least includes: a first motor used for driving a first movable element, a first detecting module used for detecting output of the first motor, a second motor used for driving a second movable element, a second detecting module used for detecting output of the second motor, and a drive control module for controlling the first motor and the second motor. The drive control module is used for: receiving a synchronous instruction; controlling the first motor and the second motor to perform adaptive adjustment when the first motor and the second motor are in a start-up phase; determining whether a difference in each observation period between a detection value of the first detecting module and a detection value of the second detecting module is equal to 0 when the first motor and the second motor are in a stable phase; controlling compensation for the driving force of the first motor or the driving force of the second motor on condition of determining that the difference is not equal to 0; and determining that the first motor and the second motor reach target positions.