Hybrid Power Train Torque Control Integration
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Solution Overview
Problem
The complexity of control systems in hybrid power trains, where multiple manufacturers contribute to the control elements, leads to potential lag periods, compatibility issues, and high costs due to the need for customized solutions and frequent updates, making it difficult to achieve flexible and reliable control.
Innovation Solution
A system that integrates a torque demand module, primary and supplemental torque contribution modules, and a torque provider control module, which interprets total machine torque targets and adjusts torque contributions from multiple providers, including an internal combustion engine and electrical torque provider, using a datalink for communication and real-time feedback control, to manage torque limits and priorities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If control elements from multiple manufacturers are integrated into a single electronic device, then control flexibility and manufacturer autonomy are improved, but control conflicts, manufacturing complexity, and coordination difficulties increase
Solution Approach 1:
The control system is segmented into distinct functional modules: a primary control module that handles real-time torque management and a supplemental control module that provides manufacturer-specific control inputs. These modules operate semi-independently, with the supplemental module injecting control signals without requiring access to or coordination with the primary module's internal logic, thereby maintaining control flexibility while reducing coordination complexity.
Solution Approach 2:
A datalink communication interface serves as an intermediary between the supplemental control module and the primary control module. This intermediary allows supplemental control inputs to be transmitted without requiring direct access to the primary controller's memory or processing resources, enabling manufacturer autonomy while preventing control conflicts through structured communication protocols.
2Reliability
If synchronous datalink communications and dedicated hardware communications are used to manage lag periods, then control reliability is improved, but system cost and customization requirements increase
Solution Approach 1:
The control system dynamically adjusts the integration point of supplemental control inputs within the existing real-time feedback control architecture. By incorporating supplemental torque contribution values at a stage where control decisions are already being formulated (rather than requiring separate synchronous communication channels), the system maintains real-time responsiveness using standard communication infrastructure, thereby improving reliability without requiring expensive dedicated hardware.
3Manufacturing precision
If control content is customized for each manufacturer and application, then control precision and manufacturer requirements fulfillment are improved, but system cost and update frequency increase
Solution Approach 1:
The control system employs a universal architecture where the supplemental control module can accept various types of manufacturer-specific inputs (torque limits, torque targets, torque division ratios) through a standardized interface. This multi-functional design allows different manufacturers to contribute their control content without requiring custom integration for each case, maintaining control precision while reducing the complexity of system updates and manufacturing.
Data Source
AI summary
A system includes a hybrid power train having an internal combustion engine and an electrical torque provider that combine to provide a total machine torque. The system includes a controller that functionally executes operations to control the hybrid power train. The controller interprets a total machine torque target value and determines a torque contribution for each of the internal combustion engine and the electrical torque provider in response. The controller interprets a supplemental torque contribution value, and controls the internal combustion engine and the electrical torque provider in response to the torque contributions and the supplemental torque contribution value. The supplemental torque contribution value is applied as a limiting value, a target value, or a prescribed ratio for one or both of the torque contributions.