Electronic Brake System Phase Delay Control
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Solution Overview
Problem
Conventional electronic brake systems face challenges with noise generation and heat issues due to the simultaneous control of multiple valves, which complicates the system's construction, control, and increases weight and mounting space requirements.
Innovation Solution
The implementation of an electronic brake system that includes inner and outer valves with phase delay control signals, specifically using PWM control signals and 180-degree phase delay for inner and outer valves to cancel superimposed currents, thereby reducing noise and heat generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple valves are controlled simultaneously in conventional electronic brake systems, then braking control function is achieved, but noise is generated due to superimposition of currents
Solution Approach 1:
The patent applies periodic action by implementing phase delay control where alternating current signals are applied to multiple valves in a sequential periodic manner rather than simultaneously. The controller alternates the activation timing of first and second valves, creating periodic on-off cycles that prevent current superimposition and reduce noise generation while maintaining effective braking control.
2Reliability
If multiple valves are controlled simultaneously in conventional electronic brake systems, then braking control function is achieved, but heat generation occurs due to superimposed currents
Solution Approach 1:
The patent implements periodic action through phase delay control that sequentially activates valves rather than simultaneously. By controlling the timing of current application to each valve in alternating periodic cycles, the system prevents superimposed currents that would generate excessive heat, thereby reducing thermal load while maintaining braking control effectiveness.
3Reliability
If respective units are provided separately in electronic brake systems, then braking control functionality is ensured, but mounting space is increased
Solution Approach 1:
The patent applies merging by integrating the controller and multiple valves into a single integrated electronic brake system unit. Rather than providing respective units separately, the controller is configured to directly manage multiple valves within one compact assembly, reducing the overall mounting space required while maintaining full braking control functionality including phase delay control capabilities.
4Reliability
If respective units are provided separately in electronic brake systems, then braking control functionality is ensured, but system weight is increased
Solution Approach 1:
The patent implements merging by consolidating the controller and multiple valves into a single integrated unit. This integration eliminates the need for separate mounting structures, connections, and housing for individual components, thereby reducing the overall system weight while preserving complete braking control functionality including noise-reducing phase delay control.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach minimizes noise and heat generation during valve control, simplifies the system's construction, reduces weight, and optimizes mounting space, while ensuring safety and improved pedal feel in braking systems.
Implementation Method 1
an electronic control unit for generating a phase delay control signal for one inner valve when a current control signal is applied to the first inner valve and the second inner valve, and generating a phase delay control signal for one outer valve when a current control signal is applied to the first outer valve and the second outer valve
Implementation Method 2
calculate the phase delay control signal so that the superimposed currents of the current control signal applied to the first inner valve and the current control signal applied to the second inner valve are canceled
Implementation Method 3
the current control signal may include a PWM (Pulse Width Modulation) control signal
Implementation Method 4
generate a 180-degree phase delay control signal for the one inner valve
Data Source
AI summary
Disclosed are an electronic brake system and a control method thereof. The electronic brake system includes a first inner valve for transmitting hydraulic pressure to a first hydraulic circuit; a second inner valve for transmitting hydraulic pressure to a second hydraulic circuit; a first outer valve for discharging hydraulic pressure from the first hydraulic circuit; a second outer valve for discharging hydraulic pressure from the second hydraulic circuit; and an electronic control unit for generating a phase delay control signal for one inner valve when a current control signal is applied to the first inner valve and the second inner valve, and generating a phase delay control signal for one outer valve when a current control signal is applied to the first outer valve and the second outer valve.