Actuator Idle Power Saving via Microactuator Disable
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Solution Overview
Problem
Existing actuator systems in data storage devices consume excessive power during idle modes due to the continuous operation of multiple actuators, which is unnecessary when precise track following is not required.
Innovation Solution
Implementing a control system that disables microactuators and associated circuitry during idle modes, utilizing only the primary actuator for positional seek operations, thereby reducing power consumption by eliminating unnecessary actuator stages during idle power saving operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple actuators are continuously operated during idle modes, then positional precision is maintained, but power consumption increases
Solution Approach 1:
The system dynamically switches between two operational modes: during idle periods, only the first actuator remains active while the second actuator is disabled to save power; when precise positioning is required, the system transitions to using both actuators. This dynamic adaptation resolves the contradiction by making the system's actuator configuration flexible rather than static.
Solution Approach 2:
The control system changes the operational parameters of the actuators based on system state. During idle modes, the second actuator is disabled (parameter change from active to inactive state), reducing power consumption. When precision is needed, the parameter changes back to activate the second actuator, thus adjusting system behavior to match requirements.
2Use of energy by moving object
If the second actuator is disabled during idle modes, then power consumption is reduced, but positional accuracy may be compromised
Solution Approach 1:
The system employs dynamic mode switching where the operational configuration changes based on real-time needs. During idle periods, the system operates in power-saving mode with only the first actuator active. When positioning precision is required, the system dynamically transitions to full-performance mode, activating the second actuator. This ensures power consumption is minimized only when precision requirements are reduced.
Solution Approach 2:
The control system adjusts operational parameters by disabling the second actuator during idle modes to reduce power consumption, then re-enables it when precision positioning is needed. This parameter change approach allows the system to optimize power usage during periods when high precision is not required, while maintaining the capability to achieve high positional accuracy when necessary.
3Measurement precision
If both actuators are used for positional seek operations, then positioning accuracy is improved, but device complexity increases
Solution Approach 1:
The positioning function is segmented into two stages: the first actuator handles coarse positioning during idle modes, while the second actuator provides fine-tuning when precision is required. This segmentation allows the system to use only the necessary actuator for each specific task, reducing overall system complexity compared to requiring both actuators to be continuously active.
Solution Approach 2:
The first actuator serves multiple functions: it performs positioning during idle modes when the second actuator is disabled, and it works in conjunction with the second actuator when precision positioning is required. This multi-functionality reduces device complexity by making the first actuator versatile rather than requiring separate dedicated components for different operational modes.
Data Source
AI summary
Systems and methods are disclosed for an actuator device or actuator control device to implement a low power savings mode. For example, a device can comprise an actuator arm including a first actuator and a second actuator, the second actuator configured to refine a movement of the actuator arm to a more precise position than use of merely the first actuator. A device can also comprise a control system configured to determine when the device is in an idle state and, when the device is in the idle state, disable the second actuator and perform a positional seek operation with the second actuator disabled. Power savings can occur from disabling the second actuator, which may also include disabling associated circuitry, such that it does not consume power or consumes a nominal (e.g., negligible or insignificant) amount of power during the associated seek operation.