Integrated Servo System Parallel Bus Position Data Transmission
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Solution Overview
Problem
Conventional servo systems experience delays and discrete time errors due to limited serial bus bandwidth, leading to control instability and degraded performance in motor velocity control, particularly in manufacturing applications.
Innovation Solution
An integrated servo system utilizing a parallel bus for real-time transmission of position and velocity data from a position signal processor to a servo controller circuit, reducing delays and errors by enabling higher frequency data transfer and integrating motor control elements with the position detection circuit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a serial bus is used to transmit position data from the encoder to the servo amplifier, then the system structure is simple, but the data transfer bandwidth is limited causing delays and discrete time errors
Solution Approach 1:
The patent changes the data transmission parameter from serial to parallel bus architecture. This parameter change increases the data transfer bandwidth and eliminates the bandwidth limitation of serial buses, thereby reducing data transfer delays and discrete time errors while maintaining system functionality.
2Ease of manufacture
If position data is transferred through a serial bus, then the system is easier to implement, but the velocity calculation contains considerable errors and delays
Solution Approach 1:
The patent changes the data transmission mode from serial to parallel, which directly improves the timing accuracy of position data transfer. This parameter change reduces the delays in position data transmission, thereby improving the accuracy of velocity calculations derived from position data through differential operation.
3Device complexity
If the servo amplifier waits for position data from the encoder through a serial bus, then data transfer is simplified, but the motor position changes during waiting causing control delays
Solution Approach 1:
The patent changes the data transmission parameter from serial to parallel bus, which significantly increases the data transfer speed. This parameter change allows the servo amplifier to receive position data more quickly, reducing the waiting time during which the motor position changes, thereby improving the response speed of the control system.
4Device complexity
If serial bus bandwidth is limited, then the system is simpler to design, but the servo performance is degraded due to control instability
Solution Approach 1:
The patent changes the data transmission parameter from serial to parallel bus architecture. This parameter change increases the data transfer bandwidth, which reduces the delays and discrete time errors in position data transmission. Consequently, the velocity calculation accuracy improves, leading to enhanced control stability and servo performance.
Data Source
AI summary
An integrated servo system and a method of controlling a motor is provided. The integrated servo system includes a position detector which determines original position data of a motor and a position signal processor which determines a position of the motor based on the determined position data. The integrated servo system further includes a servo controller circuit which controls the motor based on the determined position data and a parallel bus through which the determined position data is transmitted from the position signal processor to the servo controller circuit.