Direct Drive Transmission Position Feedback for Faster Control Response
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Solution Overview
Problem
Direct drive transmission systems suffer from low response efficiency due to delays in position feedback, affecting control efficiency.
Innovation Solution
A direct drive transmission system with a controller directly connected to multiple second position feedback devices, allowing it to receive real-time position information, and a control method that determines drivers based on this information to improve response efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a position feedback scheme is used where all position information is fed back to the driver uniformly, then the system structure is simple, but the controller response efficiency to position is low
Solution Approach 1:
The patent divides the position feedback system into multiple independent second position feedback devices, each corresponding to a specific stator. Each feedback device independently feeds back position information to the controller, enabling segmented and parallel information processing that eliminates the single feedback path bottleneck and reduces delay.
Solution Approach 2:
The patent changes the feedback architecture from a single-dimensional uniform feedback path to a multi-dimensional parallel feedback network. Multiple second position feedback devices are distributed across different spatial locations, each providing position information through independent channels to the controller, thereby increasing information throughput and response speed.
2Productivity
If multiple second position feedback devices are directly connected to the controller, then the controller response efficiency is improved, but the device complexity increases
Solution Approach 1:
The patent designs the second position feedback devices with universal functionality, where each device can independently perform position detection and feedback to the controller. This multi-functional design allows the system to achieve high control efficiency through parallel operation of multiple identical modules, reducing the need for complex specialized components.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances controller response efficiency by receiving the latest position information, improving control efficiency and reducing driver performance requirements.
Implementation Method 1
a first position feedback device is a grid ruler, and a reading head, for each two second position feedback devices of the plurality of second position feedback devices, a reading value of a leading second position feedback device in a moving direction of the mover is denoted as m, and a reading value of a trailing second position feedback device is denoted as n
Implementation Method 2
each stator of the plurality of stators includes a first magnet fixed to the base plate and a plurality of windings fixed to the first magnet and arranged at intervals along the extension direction of the guide rails
Data Source
AI summary
The present disclosure provides a direct drive transmission system and a control method. The direct drive transmission system includes: a base plate, guide rails, a plurality of stators, a mover, a first position feedback device, a plurality of second position feedback devices, a plurality of drivers, and a controller. The first position feedback device aligns with a respective second position feedback device. The plurality of stators are configured to drive the mover to slide on the guide rails. The plurality of second position feedback devices are arranged at intervals and are electrically connected to the controller. The controller is configured to control driving operations of the plurality of drivers according to effective position information fed back by the plurality of second position feedback devices.