Electric Working Machine User-Adjustable Motor Control
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Solution Overview
Problem
Existing electric working machines lack user flexibility in setting control characteristics for motor rotation speed, limiting convenience and usability as users cannot arbitrarily set control characteristics to suit their preferences.
Innovation Solution
An electric working machine comprising a motor, a first operation unit, a control unit, and a storage unit, where the second operation unit allows users to set a reference speed, and the control unit drives the motor based on this reference speed, enabling users to arbitrarily set control characteristics for motor operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple fixed control characteristics are provided for selection, then the user can choose from predefined speed modes (low, medium, high), but the user cannot arbitrarily set custom control characteristics to suit their preferences
Solution Approach 1:
The patent transforms the static, fixed control characteristics into a dynamic, user-adjustable system. The control characteristic is no longer predetermined but can be freely modified by the user through the operation unit, allowing real-time adaptation to different working conditions and personal preferences.
Solution Approach 2:
The system enables users to independently configure and adjust control characteristics according to their needs. The control unit processes user inputs from the operation unit and automatically generates appropriate control characteristics without requiring external intervention or complex setup procedures.
2Ease of operation
If fixed control characteristics are used, then the device structure remains simple, but the usability and convenience for users are limited
Solution Approach 1:
The control unit serves multiple functions: it processes drive commands from the operation unit, manages motor control, and dynamically generates control characteristics based on user inputs. This multi-functionality allows the system to maintain simplicity while providing advanced customization capabilities.
Solution Approach 2:
The system allows users to adjust control parameters through the operation unit, and the control unit translates these parameter changes into appropriate motor control characteristics. This enables flexible usability without requiring complex hardware modifications.
Data Source
AI summary
An electric working machine in one aspect of the present disclosure comprises a motor, a first operation unit, a control unit, a second operation unit, and a storage unit. The storage unit stores a reference speed that is set via the second operation unit. The control unit drives the motor at a rotation speed corresponding to a drive command from the first operation unit, in accordance with a control characteristic that is set based on the reference speed stored in the storage unit.