Single-Bus Electric Pump Control With Feedback Signal Sharing
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Solution Overview
Problem
Current control systems for electric pumps in vehicles have complex connections due to separate signal lines for control and feedback signals, leading to a cumbersome structure and potential interference, which complicates accurate and timely control.
Innovation Solution
A control system with a master controller and microprocessor connected via a single signal line, where the master controller sends control signals and receives feedback signals to regulate operations, utilizing a communication module to process and convert signals for accurate and timely control of the electric pump.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate signal lines are used for control signals and feedback signals, then mutual interference between signals is prevented, but the system connection becomes complex
Solution Approach 1:
The patent merges the control signal transmission and feedback signal transmission into a single communication bus, replacing the traditional separate signal line architecture. This combining approach reduces the number of physical connections and simplifies the overall system structure while maintaining reliable signal transmission through protocol-based signal differentiation.
Solution Approach 2:
The communication bus serves multiple functions: it transmits control signals from the master controller to the microprocessor, carries feedback signals from the microprocessor to the master controller, and handles communication protocol processing. This multi-functional design eliminates the need for dedicated separate lines for each signal type.
2Device complexity
If a single signal line is used for both control and feedback signals, then the system connection is simplified, but signal interference may occur
Solution Approach 1:
The patent introduces a communication protocol as an intermediary layer that manages signal transmission on the shared bus. The protocol includes signal identification, timing synchronization, and error detection mechanisms that prevent signal interference while allowing multiple types of signals to coexist on the same physical medium.
Solution Approach 2:
The communication system uses periodic time-division multiplexing where control signals and feedback signals are transmitted in alternating time slots. This periodic separation ensures that control signals from the master controller and feedback signals from the microprocessor do not collide or interfere with each other on the shared bus.
Data Source
AI summary
A control system for controlling operation of an execution device is provided. The control system includes a master controller, a microprocessor, and a signal line. The master controller is configured to send a control signal to the microprocessor via the signal line. The microprocessor is configured to send the control signal to the execution device to drive the execution device to operate, acquire, at a time interval, a feedback signal representing an operation state of the execution device, and send the feedback signal to the signal line. The master controller is further configured to acquire the feedback signal from the signal line, determine, from the feedback signal, the operation state of the execution device, and regulate the control signal based on the operation state.