DC permanent magnet synchronous motor
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Solution Overview
Problem
Integrated permanent magnet synchronous motors are inflexible and wasteful due to fixed control programs, making them difficult to adapt to changing environments and complicating application control, leading to inefficiencies in product development and maintenance.
Innovation Solution
A DC permanent magnet synchronous motor design featuring a motor body with a basic drive control function and an external control card with a second microprocessor for application control, allowing for easy swapping of control functions to adapt to different environments and simplifying detection and maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the control program is written into the microprocessor during motor manufacturing, then the motor can be controlled reliably for specific applications, but the motor cannot be adapted to different application environments, resulting in waste and inflexibility
Solution Approach 1:
The control system is segmented into two independent parts: a basic drive control part integrated in the motor controller with a first microprocessor, and an application control part separated on an external control card with a second microprocessor. This segmentation allows the motor body to maintain reliable basic control while the external card provides adaptability for different applications.
Solution Approach 2:
The application control function is extracted from the motor controller and placed on an external control card. This extraction allows the application-specific control program to be separated from the basic motor control, enabling the motor to be reused across different applications by simply changing the external control card.
2Extent of automation
If all control functions are integrated in the motor controller, then the control system is complete, but the product detection becomes complicated and maintenance becomes difficult
Solution Approach 1:
The control system is divided into basic drive control (integrated in motor controller) and application control (separated on external card). This segmentation simplifies product detection because the basic motor control can be tested independently, and the application-specific control can be tested separately, reducing overall complexity.
Solution Approach 2:
By extracting the application control part to an external control card, the patent simplifies maintenance and detection. The external card can be easily removed, replaced, or tested independently from the motor controller, making troubleshooting and maintenance much more straightforward.
3Ease of manufacture
If the control program is fixed in the microprocessor, then the motor controller is self-contained, but secondary development and function changes are not conducive
Solution Approach 1:
The application control function is extracted to an external control card that can be easily replaced or modified. This allows secondary development to focus only on the external card without affecting the motor controller, greatly enhancing flexibility for function changes and customizations.
Solution Approach 2:
The motor controller with the first microprocessor is designed to be universal and compatible with multiple application control cards. This universality allows the same motor controller to work with different external cards for various applications, facilitating secondary development and reducing manufacturing complexity.
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
This design enhances adaptability, reduces waste, and simplifies motor control and maintenance, ensuring reliable quality and cost-effective production by separating application control from the motor body, allowing for flexible function changes and centralized control.
Implementation Method 1
The permanent rotor assembly and the stator assembly are magnetically coupled and are installed on the housing assembly
Data Source
AI summary
A DC permanent magnet synchronous motor, including: a motor body including a rotating shaft, a permanent rotor assembly, a stator assembly, and a housing assembly; a motor controller including a first microprocessor for drive control, an inverter circuit, and a detection circuit for detecting operating parameters of the motor; and an external control card including a second microprocessor for application control. The operating parameters of the motor are input into the first microprocessor by the detection circuit. The first microprocessor outputs a PWM signal to control the inverter circuit. An output end of the inverter circuit is connected to a coil winding. The external control card is disposed outside the motor body and is connected to the motor body via an electric wire. The second microprocessor and the first microprocessor are interconnected so that they can communicate.