Vehicle Control System Synchronization Circuit
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Solution Overview
Problem
Existing vehicle control systems face challenges in maintaining synchronization between control systems when one system transitions from a stopped state to an operating state, leading to potential motor pulsation and discomfort for the driver due to timing deviations.
Innovation Solution
A vehicle control system with multiple control circuits and a monitoring circuit that synchronizes operations based on a synchronization signal generated by an operating control circuit, ensuring that when one control circuit resumes operation, its timing is aligned with the continuously operating circuit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the second control system determines processing timing based on its own clock pulse when the first control system is stopped, then the motor control can continue, but the processing timing may deviate when the first control system resumes operation
Solution Approach 1:
The patent introduces a synchronization signal as an intermediary between the first and second control systems. The second control system receives and uses this synchronization signal from the first control system to align its processing timing, thereby maintaining synchronization precision while continuing motor control operation.
Solution Approach 2:
The patent implements a feedback mechanism where the second control system monitors the synchronization signal from the first control system and adjusts its processing timing accordingly. This feedback loop ensures that timing deviations are corrected when the first control system resumes operation, maintaining synchronization accuracy.
2Manufacturing precision
If the first control system transmits synchronization signal every clock pulse, then synchronization precision is maintained, but system complexity increases
Solution Approach 1:
The patent employs periodic action by transmitting the synchronization signal at specific intervals rather than continuously with every clock pulse. This periodic transmission maintains synchronization precision while reducing the frequency of signal transmissions, thereby lowering system complexity and resource consumption.
3Adaptability or versatility
If the second control system operates independently with its own clock pulse, then system autonomy is improved, but timing synchronization deteriorates
Solution Approach 1:
The patent applies dynamics by enabling the second control system to switch between two operational modes: operating independently with its own clock pulse when the first control system is stopped, and synchronizing with the first control system's signal when it is operating. This dynamic adaptation maintains both autonomy and synchronization precision depending on system conditions.
Data Source
AI summary
Provided is a vehicle control system that appropriately performs synchronization control for a plurality of control systems. A monitoring circuit generates a command signal when only a first reset signal is input. The monitoring circuit generates a command signal when the state in which only the first reset signal is input is changed to the state in which the input of the first reset signal is stopped. With the command signal, a second clock signal is output to a timer generator as a second timing signal. With the command signal, the second clock signal generated by a second synchronization signal generating circuit is output to a first synchronization signal generating circuit, and a third clock signal generated by the first synchronization signal generating circuit is output to a timer generator as a first timing signal.