Multi-Motor Controller With Reconfigurable Digital Amplifier
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Solution Overview
Problem
Typical motor control systems require specific hardware configurations for different motor types, leading to increased costs, complexity, and inventory requirements due to the need for multiple controller types, which complicates control and monitoring functions.
Innovation Solution
A motor control module with a digital amplifier and motor coil interface that can drive multiple motor types, including 1-phase, 2-phase, and 3-phase motors, using a reconfigurable current loop and common ports to connect various motor types, allowing for software-controlled selection and monitoring of motor types without hardware modifications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple specific controller types are designed for different motor types, then each controller is optimized for its specific motor type, but the device complexity and inventory requirements increase
Solution Approach 1:
The motor control module is designed with a reconfigurable digital amplifier that can adapt to multiple motor types (1-phase, 2-phase, 3-phase motors) through software configuration rather than requiring hardware modifications. The controller uses a common port and reconfigurable current loop to universally control different motor types, eliminating the need for multiple dedicated controller designs.
Solution Approach 2:
The controller implements dynamic reconfiguration capabilities where the digital amplifier can change its operating parameters and control strategies based on the detected motor type. The system dynamically adjusts excitation tables, current loop settings, and control algorithms to optimize performance for the specific motor type being controlled.
2Reliability
If multiple specific controller types are designed for different motor types, then each controller is optimized for its specific motor type, but the inventory and repair complexities increase
Solution Approach 1:
By designing a single universal motor control module that can control multiple motor types through software reconfiguration, the system eliminates the need to maintain multiple different controller inventories. This universal design means that the same hardware platform can service all motor types, significantly simplifying repair operations and inventory management.
3Measurement precision
If hardware configurations are modified for different motor types, then control precision is improved, but the ease of manufacture and adaptability decrease
Solution Approach 1:
The system replaces hardware configuration modifications with software-based reconfiguration. Instead of physically modifying the controller hardware for different motor types, the system uses programmable digital amplifier settings, excitation tables, and control parameters that can be changed through software to achieve optimal control precision for each motor type.
Solution Approach 2:
The controller achieves adaptability by changing operational parameters through software rather than hardware modifications. The digital amplifier can adjust current loop gains, excitation patterns, PWM frequencies, and other control parameters based on the motor type being controlled, maintaining precision while enabling versatility.
Data Source
AI summary
A motor control module provides control of a plurality of different motor types, such as a 1-phase DC Brush motor, a 3-phase brushless DC motor, and a 2-phase step motor. The module includes a digital amplifier that is configurable to drive the plurality of different motor types. A motor control unit, coupled to the digital amplifier, controls a motor type driven by the digital amplifier via a command signal to the digital amplifier. The motor control unit also monitors status information about the motor control module, including status information about the digital amplifier. A motor coil interface is coupled to the digital amplifier and configured to connect with the plurality of different motor types.