Multiple Small Gyro Stabilizers With Sequential Roll Torque Control
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Solution Overview
Problem
Existing gyro stabilization systems for marine vessels face challenges in effectively counteracting roll movements with smaller gyro stabilizers that precess faster but provide torque over a limited portion of the roll movement, leading to reduced stabilization efficiency and increased stress on the vessel.
Innovation Solution
A computer system controls a set of smaller gyro stabilizers on a marine vessel, ensuring that only one or more are active at a time, with the others deactivated, to distribute torque evenly throughout the roll period, using a control procedure that activates gyro stabilizers sequentially and based on roll movement data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If multiple smaller gyro stabilizers are used instead of a single larger gyro stabilizer, then space requirements are reduced and installation flexibility is improved, but the smaller gyro stabilizers precess faster and provide torque over only a limited portion of the roll movement, reducing stabilization efficiency
Solution Approach 1:
The system divides the stabilization function into multiple smaller gyro stabilizers instead of using a single large gyro. Each smaller gyro operates independently but contributes to the overall stabilization effect, allowing distributed torque application throughout the roll cycle while meeting space constraints.
Solution Approach 2:
The control system dynamically activates and deactivates individual gyro stabilizers based on real-time roll movement conditions. By sequentially activating gyros at different phases of the roll cycle, the system ensures continuous torque provision despite each individual gyro's limited operational duration.
2Adaptability or versatility
If smaller gyro stabilizers are used, then installation flexibility and ease of retrofitting are improved, but roll accelerations increase due to limited torque application duration, reducing comfort and increasing stress on vessel components
Solution Approach 1:
The control system implements periodic activation of gyro stabilizers synchronized with the roll cycle. Each gyro is activated at specific phases and deactivated at others, creating a coordinated periodic action pattern that maintains continuous stabilization while allowing each gyro to operate within its optimal performance window.
Solution Approach 2:
By coordinating the activation and deactivation of multiple gyro stabilizers, the system ensures that stabilization torque is continuously applied throughout the entire roll cycle. When one gyro completes its torque provision phase, another is activated to maintain uninterrupted stabilization, eliminating gaps that would cause increased roll accelerations.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enhances stabilization performance by providing consistent torque throughout the roll movement, improving comfort and reducing stress on the vessel, while allowing for flexible installation and easier retrofitting of gyro stabilizers.
Implementation Method 1
a gyro stabilizer configured to use a precession effect of the gyro stabilizer to provide a momentum counteracting roll of the marine vessel
Data Source
Figure 1~2
Figure 3
AI summary
A computer system (1) comprising processing circuitry (2) configured to: control a set (S) of gyro stabilizers, said set (S) of gyro stabilizers comprising at least two gyro stabilizers (G), attached to a same marine vessel, such as a ship, a floating platform, or a floating wind turbine. The processing circuitry (2) is adapted to provide control data to the control system of each gyro stabilizer (G) in said set (S) of gyro stabilizers to establish a control procedure such that, at each one of a plurality of different time instances of the control procedure, said set (S) of gyro stabilizers comprises at least one non-active gyro stabilizer and at least one active gyro stabilizer, wherein the at least one non-active gyro stabilizer and the at least one active gyro stabilizer are different gyro stabilizers at different time instances of said control procedure, wherein: each passive gyro stabilizer (G) is controlled by the control system such that the passive gyro stabilizer (G) is prevented from rotating around its precession axis (A2), and each active gyro stabilizer (G) is controlled by the control system such that the active gyro stabilizer (G) is allowed to rotate around its precession axis (A2).