Integrated Inverter Control Board for Park and Differential Lock Feedback
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Solution Overview
Problem
The traditional distributed design of vehicle controllers for parking and differential lock functions increases vehicle layout space, costs, and failure risks due to multiple manufacturers and low safety levels.
Innovation Solution
An inverter integrating park lock and differential lock controllers with a shared microprocessor for closed-loop control, reducing the number of microprocessors and adding feedback control loops for improved stability and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If distributed controllers (inverter, park lock controller, differential lock controller) are used separately, then each controller can perform its specific function independently, but the vehicle layout space increases and hardware costs increase
Solution Approach 1:
The patent merges the inverter control unit, park lock control unit, and differential lock control unit into a single integrated control board. This consolidation reduces the number of separate controllers from three to one, directly decreasing the vehicle layout space required while maintaining all necessary control functions through modular software architecture within the unified hardware platform.
Solution Approach 2:
The integrated control board is designed with multi-functional capability, allowing a single microprocessor system to perform inverter control, park lock control, and differential lock control functions. The control board includes multiple control units that can independently execute different control algorithms and protocols, enabling one hardware platform to replace multiple specialized controllers.
2Reliability
If distributed controllers from different manufacturers are used, then each controller can be optimized for its specific function, but development difficulties increase and manufacturing complexity increases
Solution Approach 1:
The patent consolidates three separate controller development projects into one integrated control board development. This unification allows a single development team to work on all control functions simultaneously, sharing code libraries, testing procedures, and manufacturing processes, thereby reducing development complexity and manufacturing complexity while maintaining functional optimization through modular software design.
3Adaptability or versatility
If distributed controllers are used, then each controller can operate independently, but the safety level decreases and failure risk increases
Solution Approach 1:
The integrated control board implements closed-loop feedback control for both park lock and differential lock functions. Position feedback acquisition and state feedback acquisition continuously monitor system status and adjust control outputs accordingly, improving safety levels by detecting and correcting anomalies in real-time. The feedback mechanisms include position sensors and state sensors that provide continuous information to the microprocessor for adaptive control.
Data Source
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Figure 3
AI summary
An inverter is disclosed. The inverter comprises a housing and a control board provided inside the housing. By integrating the park lock control unit (200), the differential lock control unit (300) and the motor control unit into the control board and controlling them with a same microprocessor (100), the layout space and hardware cost of the entire vehicle are saved. By adding a control loop between the position feedback acquisition and the park lock control unit (200), the closed-loop control of the parking function is realized. By adding a control loop between the state feedback acquisition and the differential lock control unit (300), the closed-loop control of the differential lock function is realized. In this way, the technical effects of sharing hardware resources, improving stability, and reducing failure rate are achieved.