Variable Speed Boat Lift Motor Controller for Automatic Leveling

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Solution Overview

Problem

Boat lift systems using electric motors lack flexibility in speed and torque control, leading to uneven lifting and lowering of boats due to synchronization issues and manual leveling requirements, which reduces efficiency and motor lifespan.

Innovation Solution

A boat lift motor controller with a user interface, processor, and output board that allows for variable speed control, acceleration, and deceleration settings, enabling independent control of rising and lowering speeds, and automatic leveling of the boat lift cradle.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If fixed speed and torque motors are used in boat lift systems, then the system structure is simple, but the flexibility in handling boats of varying sizes is reduced

Engineering Contradiction:
Improvemotor control system complexityVSAvoidflexibility for boats of varying sizes
Core Design Contradiction:
Device complexityVSAdaptability or versatility

Solution Approach 1:

The patent applies variable speed motors that allow dynamic adjustment of motor speed and torque based on the weight and size of the boat being lifted. The control system enables the motors to operate at different speeds and torques to accommodate boats of varying sizes, transitioning from fixed to dynamic operation parameters.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system changes operational parameters (speed and torque) of the motors based on the load conditions. By adjusting these parameters dynamically, the system can efficiently handle different boat sizes and weights, optimizing performance for each specific scenario.

Inventive Principle:
Principle #35Parameter changes

2Power

If multiple motors are used in boat lift systems, then the lifting capacity is increased, but synchronization difficulties arise due to sensitivity to electric power fluctuations

Engineering Contradiction:
Improvelifting capacityVSAvoidmotor synchronization
Core Design Contradiction:
PowerVSReliability

Solution Approach 1:

The control system continuously monitors the operation of multiple motors and provides feedback to maintain synchronization. When power fluctuations occur, the system detects the discrepancy and adjusts motor operations to maintain synchronized lifting, preventing uneven cradle movement.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The patent combines multiple motors under a unified control system that manages them as a coordinated unit. The control system integrates the operation of individual motors to ensure they work together synchronously, treating them as a single coordinated lifting mechanism rather than independent units.

Inventive Principle:
Principle #5Merging (Combining)

3Device complexity

If manual leveling is implemented in boat lift systems, then the cost is reduced, but the time required for raising or lowering the boat lift increases significantly

Engineering Contradiction:
Improveleveling control systemVSAvoidtime for raising or lowering boat lift
Core Design Contradiction:
Device complexityVSLoss of time

Solution Approach 1:

The system implements automatic leveling capability where the control system autonomously monitors and adjusts the boat lift cradle level without requiring manual intervention. The motors automatically compensate for levelness issues, and the system self-corrects synchronization problems, eliminating the need for user stopping and manual adjustment.

Inventive Principle:
Principle #25Self-service

4Device complexity

If manual stopping and restarting of motors is required for leveling, then the control system is simple, but the motor lifespan is reduced

Engineering Contradiction:
Improvemotor control systemVSAvoidmotor lifespan
Core Design Contradiction:
Device complexityVSDuration of action of stationary object

Solution Approach 1:

The control system maintains continuous motor operation without unnecessary stopping and restarting. By implementing automatic leveling and synchronization control, the system keeps motors running smoothly throughout the lifting and lowering process, eliminating frequent start-stop cycles that would reduce motor lifespan.

Inventive Principle:
Principle #20Continuity of useful action

Data Source

PatentUS8727661B2Variable speed boat lift motor controller
Publication Date: 2014.05.20 PORTCO AUTOMATION
  • US8727661B2 patent drawing
  • US8727661B2 patent drawing
  • US8727661B2 patent drawing

AI summary

Systems, apparatuses, and methods for controlling a variable speed boat lift motor. The systems, apparatuses, and methods include a user interface for connection to a variable speed boat lift drive. The user interface transmits a signal to a variable speed boat lift drive that causes the variable speed boat lift drive to rise at a first speed set by a user through the user interface and lower at a second speed set by a user through the user interface.