Array Antenna Device Priority Grouping Motor Control
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Solution Overview
Problem
In antenna devices with multiple circularly polarized antennas, a single electric motor cannot individually rotate each antenna, leading to increased current consumption and prolonged time required to form a main beam due to the need for multiple motors, which exceeds the device's current capacity and delays beam formation.
Innovation Solution
An array antenna device with a processing circuitry that classifies rotating devices into groups with different priorities, allowing only drivable devices to be simultaneously operated, prioritizing those with higher importance levels, thereby optimizing current usage and reducing beam formation time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single electric motor is used to rotate multiple circularly polarized antennas, then the device complexity is reduced, but the individual phase adjustment capability is lost
Solution Approach 1:
The patent segments the control of multiple antennas by dividing them into different priority groups. Each group can be independently controlled through priority-based scheduling, allowing the system to manage multiple antennas with a single motor while maintaining individual phase adjustment capability through time-multiplexed control.
Solution Approach 2:
The patent introduces dynamic priority-based scheduling that allows the system to adaptively allocate the single electric motor to different antennas based on current operational requirements. The priority levels enable dynamic adjustment of which antenna receives motor control at any given moment, providing flexibility without requiring multiple dedicated motors.
2Adaptability or versatility
If multiple electric motors are mounted to individually rotate each circularly polarized antenna, then the individual phase adjustment capability is improved, but the current consumption increases
Solution Approach 1:
The patent merges the control function of multiple electric motors into a single electric motor by implementing priority-based time-multiplexed control. This consolidation reduces the total number of motors and associated current consumption while maintaining the ability to individually adjust the phase of each antenna through sequential control.
Solution Approach 2:
The patent employs periodic action through priority-based scheduling, where the single electric motor periodically services different antenna groups based on their priority levels. This periodic control strategy enables individual phase adjustment of multiple antennas using one motor, reducing current consumption compared to having multiple motors running simultaneously.
3Use of energy by moving object
If the number of electric motors is limited due to current consumption constraints, then the current consumption is reduced, but the time required to form the main beam increases
Solution Approach 1:
The patent applies preliminary action by pre-classifying antennas into priority groups before beam formation begins. This classification allows the system to proactively manage motor allocation, ensuring that critical antennas are serviced first, thereby minimizing the overall beam formation time while staying within current consumption limits.
Solution Approach 2:
The patent implements feedback through the priority-based scheduling mechanism, where the system continuously monitors which antennas need phase adjustment and dynamically allocates the single electric motor accordingly. This feedback-driven approach optimizes the sequence of motor operations to minimize beam formation time while adhering to current consumption constraints.
4Loss of time
If multiple electric motors are used to rotate antennas simultaneously, then the beam formation time is reduced, but the device complexity and cost increase
Solution Approach 1:
The patent changes the operational parameters by introducing priority levels and time-multiplexed control for a single electric motor. This parameter change allows the system to achieve efficient beam formation through intelligent scheduling rather than through parallel motor operation, maintaining low device complexity while optimizing beam formation time.
Data Source
AI summary
An array antenna device includes a classifying unit that classifies rotating devices into a plurality of groups with different priorities under the condition that the number of rotating devices included in one group is equal to or less than the number of rotating devices that is calculated by a number-of-drivable-devices calculating unit; and a rotation instructing unit that selects groups in descending order of priority from among the plurality of groups and drives, each time one group is selected, all rotating devices included in the group, and the classifying unit performs the classification in such a manner that, among the rotating devices, a rotating device that rotates an element antenna with a higher importance level is classified into a group with a higher priority.