MCU Module Sharing Electronics for Multiple Motor Control
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Solution Overview
Problem
The high cost and complexity of electronically controlled motor systems in vehicles due to the need for multiple independent components for each motor, which are often idle and prone to noise interference, necessitate a more efficient control method.
Innovation Solution
A system where a single MCU module interfaces with multiple motor modules via a bus, sharing electronic components such as power switch circuits and feedback sensors, allowing the MCU to select and control motors based on CPU instructions, reducing the overall electronic hardware requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If each motor is fully independent with its own LIN bus driver, MCU, feedback sensor, power switch and identifier, then each motor can be controlled independently, but the cost of electronic hardware increases significantly
Solution Approach 1:
A single LIN bus driver is designed to serve multiple motors through a master controller architecture. The driver can sequentially or simultaneously control different motors based on commands from the master controller, eliminating the need for dedicated LIN bus drivers for each motor while maintaining independent control capability.
Solution Approach 2:
Multiple motor control functions are merged into a single master controller that manages all motors through a shared LIN bus driver. The master controller allocates control resources dynamically, allowing one driver and controller to perform the functions previously requiring separate dedicated components for each motor.
2Ease of operation
If multiple independent electronic components are used for each motor, then each motor can operate autonomously, but the number of potential faults increases and reliability decreases
Solution Approach 1:
The shared LIN bus driver and master controller are designed with robust error handling and fault detection capabilities that serve all motors. A single reliable control unit with comprehensive monitoring replaces multiple points of failure, reducing overall system fault probability while maintaining motor autonomy through software-based control management.
3Extent of automation
If electronically controlled motors are used instead of PMDC brush motors, then the system is more suitable for automated computer control, but the cost of electronics exceeds the cost of the motor itself
Solution Approach 1:
A single LIN bus driver and master controller serve multiple motors, dramatically reducing the per-motor electronic cost. The shared electronic infrastructure provides full computer control compatibility for all motors while the cost of electronics becomes a fraction of the motor cost, as the expensive electronic components are amortized across multiple motor controls.
Data Source
AI summary
Apparatus, having multiple motor modules, has an MCU module. Each motor module has an electronically controlled motor. The MCU module has an MCU and an interface for connecting to a bus from a CPU. In use the MCU module receives control signals from the CPU and in turn instructs a selected one of the motors to operate.