Linear Motor Servo Control Position Compensation
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Solution Overview
Problem
Conventional linear motors suffer from inaccurate placement of position feedback devices, leading to error signals and reduced displacement precision due to manual assembly, affecting the smooth operation and precision of the motor.
Innovation Solution
A servo control apparatus with a position compensating device that synchronously moves with the position feedback device and driver, correcting signals to improve precision and smoothness by using a position compensating device connected between the driver and position feedback device, which includes an input port, counters, a converter, and a pulse generator to process and transmit corrected pulses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the position feedback device is manually assembled, then the assembly process is simple and quick, but the position feedback device cannot be located accurately opposite the linear motor, causing location excursion and signal errors
Solution Approach 1:
The position feedback device is pre-positioned at a predetermined location on the linear motor during manufacturing. This preliminary positioning action ensures that the feedback device is accurately located opposite the linear motor's measurement point, eliminating location excursion and signal errors that would otherwise occur during manual assembly.
Solution Approach 2:
The patent replaces manual mechanical assembly with an automated positioning system that uses a predetermined location mechanism. This substitution eliminates human operational habits and applying force variations, providing consistent and accurate positioning of the feedback device without requiring complex manual adjustment procedures.
2Measurement precision
If the position feedback device is manually assembled, then the assembly process is simple, but the driver receives error signals, affecting the displacement precision of the linear motor
Solution Approach 1:
The position feedback device is pre-positioned at a predetermined location during manufacturing, ensuring accurate alignment with the linear motor's measurement point. This preliminary action prevents location excursion that would cause signal errors, thereby maintaining both high measurement precision and signal reliability.
Solution Approach 2:
The patent implements a feedback mechanism where the position feedback device continuously monitors the linear motor's position and provides correction signals to the driver. This feedback loop compensates for any positioning deviations and ensures accurate displacement control, improving both measurement precision and signal accuracy.
3Ease of operation
If the position feedback device is manually assembled, then the assembly is quicker, but the movement of the linear motor is not smooth due to position errors
Solution Approach 1:
The position feedback device is pre-positioned at a predetermined location during manufacturing, eliminating the need for time-consuming manual alignment and adjustment. This preliminary action ensures accurate positioning that enables smooth motor operation while reducing overall assembly time.
Solution Approach 2:
The patent replaces manual positioning operations with an automated predetermined location system. This substitution eliminates variations caused by human operators, ensuring consistent and smooth motor movement while reducing assembly time through streamlined manufacturing processes.
Data Source
AI summary
A servo control apparatus for a linear motor comprises a position feedback device, a driver and a position compensating device that are connected with one another. The servo control apparatus is electrically connected to the linear motor. By such arrangements, it can not only improve the precision of the displacement of the linear motor, but also make the movement of the linear motor relatively smooth.