Motor Control Device With Switch Circuit For PWM Routing
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Solution Overview
Problem
Existing motor control devices for imaging apparatuses face challenges in efficiently managing multiple motors with varying specifications, leading to increased power consumption and the need for new device configurations when motor types or numbers change.
Innovation Solution
A motor control device featuring a plurality of processors and corresponding PWM signal generation circuits, along with a switch circuit that selectively routes information between them, allowing for flexible control of different motors without requiring a new device configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single CPU is used to manage multiple controlled objects, then device complexity is reduced, but power consumption increases and the CPU must be high-performance
Solution Approach 1:
The control device is segmented into multiple independent CPUs, each responsible for controlling a specific motor. This segmentation allows each CPU to be optimized for its specific task and operated at lower power levels, while collectively managing multiple controlled objects without requiring a single high-performance CPU.
Solution Approach 2:
The control device incorporates a switch circuit that enables any CPU to control any motor through reconfigurable signal routing. This universal interface allows the system to adapt to different motor configurations and types without requiring dedicated control circuits for each motor, reducing overall device complexity while maintaining low power consumption.
2Use of energy by moving object
If dedicated CPUs are provided for each motor to be controlled, then power consumption is reduced, but device complexity increases and the system cannot adapt to changes in motor type or number
Solution Approach 1:
The control device employs a dynamic reconfigurable architecture where the switch circuit can real-time reassign which CPU controls which motor. This dynamic capability allows the system to adapt to changes in motor type, number, or configuration without requiring hardware modifications, while each CPU continues to operate at low power levels.
Solution Approach 2:
The switch circuit acts as an intermediary between CPUs and motors, providing a flexible routing layer that decouples the fixed CPU-motor relationships. This intermediary enables any CPU to interface with any motor through software configuration rather than hardwired connections, enhancing adaptability while maintaining the low power consumption benefits of dedicated CPUs.
3Measurement precision
If dedicated control circuits are provided for each motor, then control precision is improved, but device complexity increases when motors need to be changed
Solution Approach 1:
The control device uses a universal control interface where each CPU can control any motor through the switch circuit. This universal design maintains control precision equivalent to dedicated circuits while avoiding the complexity of multiple fixed control paths. The same control algorithms and signal processing can be applied to different motor types through software rather than hardware changes.
Data Source
AI summary
A motor control, device that controls a motor, includes: a plurality of processors, each being adapted to generate information for generating a pulse width modulation (PWM) signal; a plurality of PWM signal generation circuits, each being provided corresponding to each of the processors and adapted to generate the PWM signal on the basis of the information that has been generated by the corresponding processor; and a switch circuit that selectively gives the information generated by each of the processors to any of the PWM signal generation circuits.