Actuator Control Using Intermediate Sensor Data to Cut Time Lag
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Solution Overview
Problem
Existing actuator control systems face inefficiencies due to delayed actuator driving and time lags between sensor detection and actuator control, leading to insufficient system control performance.
Innovation Solution
An actuator control system that includes a sensor output computation unit, a transmission control unit for transmitting intermediate and final data, and a command value computation unit, allowing for preliminary actuator control based on intermediate data before final data is computed, thereby improving velocity and precision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the sensor output computation unit completes the final data computation before transmitting to the command value computation unit, then the computation accuracy is improved, but the actuator control time is delayed
Solution Approach 1:
The transmission control unit transmits intermediate data to the command value computation unit before the sensor output computation unit completes the final data computation. This allows the command value computation to begin in advance using available intermediate results, reducing the overall control time while maintaining accuracy through subsequent refinement when final data becomes available.
Solution Approach 2:
The data transmission process is segmented into multiple stages: intermediate data is transmitted separately from final data. The command value computation unit receives and processes intermediate data first, then refines the computation when final data is received, dividing the computation task into manageable phases that can proceed in parallel.
2Stability of the object's composition
If the sensor and actuator are controlled in predetermined control cycles, then the system stability is improved, but the time lag between sensor detection and actuator driving increases
Solution Approach 1:
The control system transitions from rigid predetermined cycles to a dynamic data-driven approach. The transmission control unit dynamically transmits data as soon as intermediate or final computation results are available, allowing the control cycle duration to adapt to actual computation completion times rather than following fixed periodic intervals.
Solution Approach 2:
Intermediate data is transmitted and processed in advance before the predetermined control cycle completes. This preliminary action allows the actuator control to begin earlier than traditional cycle-based control would permit, reducing time lag while maintaining system stability through controlled refinement when final data arrives.
3Manufacturing precision
If the actuator driving is started after object information acquisition is completed, then the control precision is improved, but the overall system productivity is reduced
Solution Approach 1:
The command value computation unit begins computing actuator control commands in advance using intermediate data from the sensor output computation unit, before the final object information acquisition is complete. This preliminary computation action reduces the overall system response time and improves productivity while maintaining precision through subsequent refinement.
Solution Approach 2:
The computation and control process continues without idle waiting periods. While the sensor output computation unit is still processing final data, the command value computation unit continuously refines control commands using available intermediate data, eliminating gaps in useful action and improving overall system productivity.
Data Source
AI summary
An actuator control system includes: a transmission control unit configured to transmit final data, which is a final result of the computation by a sensor output computation unit, and to transmit intermediate data before transmitting the final data; and a command value computation unit configured to compute a command value for driving an actuator, based on the intermediate data and the final data transmitted by the transmission control unit.