Linear Conveyance Control for High-Acceleration Machining Carriages
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing linear conveyance systems face constraints in achieving high acceleration/deceleration of movable portions due to separate control apparatuses for automated guided vehicles and power supply trucks, leading to limitations in drive pattern flexibility.
Innovation Solution
A linear conveyance system with a stator control unit that energizes coils and detects positions of movable portions, and a controller unit that generates current commands for driving, allowing for integrated control of movable portions with high acceleration/deceleration by separating output devices from machining devices and using a common controller unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If separate control apparatuses are used for automated guided vehicle and power supply truck, then each can be controlled independently, but the response time increases and acceleration/deceleration cannot be made high
Solution Approach 1:
The patent combines the control of the automated guided vehicle (movable portion) and power supply truck into a single integrated control apparatus. This unified controller simultaneously manages both vehicles, eliminating the sequential detection and control delays inherent in separate control systems. The integrated control enables coordinated motion planning that achieves high acceleration and deceleration while maintaining precise positioning between the two vehicles.
2Power
If power supply unit capacity is increased to supply sufficient power, then power supply capability improves, but the weight of the movable portion increases
Solution Approach 1:
The patent extracts the power supply unit from the movable portion (automated guided vehicle) and places it on a separate stationary or mobile power supply platform. This separation removes the heavy battery or power generation equipment from the movable carriage, significantly reducing its weight and allowing for higher acceleration and deceleration performance while maintaining adequate power supply capability through external connection.
3Speed
If weight of movable portion is reduced to improve acceleration, then acceleration performance improves, but vibration increases and control accuracy deteriorates
Solution Approach 1:
The patent implements a feedback control system using sensors (such as encoders or vision systems) to continuously monitor the position and motion state of the lightweight movable portion. The control apparatus processes this feedback information and adjusts the motor drive signals in real-time to compensate for vibrations and positioning errors, enabling high acceleration performance while maintaining precise control accuracy despite the reduced mass.
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
Enables movable portions to move with high acceleration/deceleration, reducing constraints on drive patterns and improving positioning control performance by minimizing load weight on machining movable portions.
Implementation Method 1
a fixed portion including a coil that generates magnetic field for driving the movable portions
Implementation Method 2
a fixed portion including a coil that generates magnetic field for driving the movable portions
Implementation Method 3
a stator control unit that energizes the coil and detects positions of the movable portions
Data Source
AI summary
A linear conveyance system includes: movable portions including permanent magnets; a fixed portion generating magnetic fields for driving the movable portions, and arranged to form a conveyance path for the movable portions; a stator control unit energizing the coil and detecting positions of the movable portions; and a controller unit generating and outputting current commands for driving the movable portions to the stator control unit based on position information on the positions of the movable portions, wherein the movable portions include an output movable portion on which an output device that outputs energy or data is to be installed and a machining movable portion on which a machining device is to be installed, the machining device being to be used for machining of a workpiece, and being connected to the output device by a cable, and the controller unit controls the output movable portion and the machining movable portion.