Linear Driver Control Loop Segmentation for 12V Operation
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Solution Overview
Problem
Traditional linear drivers fail to operate normally when installed on devices due to long control circuits and large line losses, requiring an external transformer to convert +12V to +24V, increasing usage costs.
Innovation Solution
A drive control system that reduces loop length and connection points by directly connecting a motor and power module through a motor drive module, allowing operation with a +12V power supply, thereby minimizing unnecessary line loss and connection point losses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional linear driver control loop is used with all loads and control switch modules connected in series, then the control circuit can be implemented, but the loop length and connection points increase, causing large line loss and node resistance that prevents normal operation with +12V power supply
Solution Approach 1:
The control loop is segmented into two separate loops: a control loop for control signals and a drive loop for power delivery. This segmentation allows the drive loop to have fewer connection points and shorter path, reducing line loss and node resistance while maintaining control functionality.
Solution Approach 2:
The motor drive module serves as an intermediary component that separates control signal transmission from power delivery. It receives control signals through the control loop and power through the drive loop, enabling independent optimization of each loop's electrical characteristics.
2Reliability
If an external transformer is added to convert +12V to +24V, then the linear driver can operate with traditional control loops, but the usage cost increases
Solution Approach 1:
The system changes the operating voltage parameter from the traditional +24V to +12V, allowing direct use of on-board power supplies without external transformers. The control loop and drive loop are designed to accommodate this voltage parameter change while maintaining proper functionality.
3Ease of operation
If the control loop includes all loads and control switch modules in series, then complete control functionality is achieved, but the loop length increases causing large line loss
Solution Approach 1:
The series connection of all loads and control switch modules is segmented into separate control and drive loops. The control loop maintains control functionality with necessary components, while the drive loop provides direct power delivery, reducing overall loop length and minimizing line loss.
Data Source
AI summary
A drive control system for a linear driver may include a power module, a controller, a motor drive module, a motor, and a position control module. The power module may be connected to the controller, the controller may be connected to the motor drive module, and the position control module may be connected in series between the controller and the motor drive module to form a control loop. The power module may be connected to the motor drive module to input power to the motor drive module, and the motor drive module may be connected to the motor to form a drive loop. The control loop may control the work of the drive loop, and the drive loop may directly form a loop in series connection with the motor and the power module through the motor drive module.