Caravan Mover Load-Compensated Control for Smooth Turning
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Solution Overview
Problem
Existing caravan mover systems lack efficient control mechanisms to manage variable loads and provide smooth, continuous movement in confined spaces, often resulting in jerky or uncontrolled maneuvers due to sequential button operations and limited directional and speed control.
Innovation Solution
A control system that independently varies power to each brushed motor based on load detection, using a speed compensation mechanism and regenerative braking, allowing for continuous speed and directional control through a single joystick or thumb stick interface, enabling smooth movement along curved paths and maintaining desired speeds under varying loads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a single control system controls multiple caravan movers, then the user has a single operating device to control movement, but the system lacks efficient control mechanisms to manage variable loads resulting in jerky or uncontrolled maneuvers
Solution Approach 1:
The control system incorporates feedback mechanisms that continuously monitor the load on each caravan mover and automatically adjust power distribution to maintain smooth operation. The system detects load variations and compensates in real-time, preventing jerky movements while maintaining single-device control simplicity.
Solution Approach 2:
The control system dynamically adjusts power distribution to each caravan mover based on real-time load conditions. This dynamic adaptation allows the system to respond to varying terrain and load conditions, ensuring smooth controlled maneuvers while maintaining ease of operation through a single interface.
2Device complexity
If sequential button operations are used to control caravan movers, then the control mechanism is simple, but the movement is jerky and lacks continuous control
Solution Approach 1:
The system replaces sequential mechanical button operations with an electronic control interface that provides continuous analog control. This substitution maintains simplicity while enabling smooth, progressive movement control through electronic signal modulation rather than discrete mechanical switches.
Solution Approach 2:
The control system implements continuous power delivery to caravan movers with variable modulation, replacing intermittent sequential button activation. This continuous control allows for smooth acceleration and deceleration, eliminating jerky movements while maintaining operational simplicity through a unified control interface.
3Device complexity
If limited directional and speed control is provided, then the control system is simple, but the caravan cannot follow complex paths or maintain speed on uneven terrain
Solution Approach 1:
The control system dynamically adjusts both directional control and speed parameters in real-time based on terrain conditions and desired path. This dynamic capability allows the caravan to follow complex paths and maintain speed on uneven terrain while keeping the control interface relatively simple through automated assistance features.
Solution Approach 2:
The system uses feedback from load sensors and position detection to automatically adjust directional and speed control parameters. This feedback mechanism enables the caravan to navigate complex paths and compensate for terrain variations without requiring complex manual control inputs from the user.
4Device complexity
If power distribution to motors is not adjusted for load, then the control system is simple, but the caravan cannot maintain desired speed under varying loads
Solution Approach 1:
The control system incorporates load sensing feedback that automatically detects variations in terrain and load conditions. Based on this feedback, the system dynamically adjusts power distribution to each motor to maintain consistent desired speed, balancing automation with relatively simple control architecture.
Solution Approach 2:
The system automatically changes power delivery parameters to motors based on detected load conditions. This parameter adjustment maintains consistent speed under varying loads while keeping the user interface simple, as the system handles the complex parameter modulation automatically based on sensor inputs.
Data Source
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AI summary
The present invention relates to an adjustable control system for a caravan moving system in which the caravan movers each include a brushed motor. The adjustable control system can control two caravan movers (10) mounted on a single axle caravan or two caravan movers mounted on a twin axle caravan or four caravan movers mounted on a twin axle caravan (quad system). The caravan moving system comprises a control unit, a user operated actuating device, power means and a drive unit. The present invention utilises a control system which provides variable movement of the or each caravan mover (10) and also provides gradual changes in both speed of each brushed motor and the subsequent ability to smoothly change the direction of travel of the caravan. In particular, the present invention enables the caravan to follow a wavy or curved line of travel in which the radius of the turn varies (i.e. from 0 degrees to a spin on the spot (equivalent to a 90 degree turn)). Accordingly, the caravan can follow sinusoidal and/or elliptical lines of travel without intermittent stops to provide sequential directional changes. Furthermore, the user has the continuous ability to simultaneously vary the speed.