Motorized Scooter Acceleration Deceleration Control
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Solution Overview
Problem
Existing motorized scooters do not effectively reduce muscular effort for longer distances while allowing traditional use and fail to automatically adapt motor power to user forces, disrupting manual propulsion and not providing seamless assistance.
Innovation Solution
A motorized scooter with acceleration and deceleration detection means that actuates the motor only during deceleration phases lasting a predetermined threshold after acceleration, ensuring motor assistance supplements user efforts without disrupting traditional use, and adjusts speed to maintain setpoints based on user input.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the motor is continuously actuated to assist user movement, then the reduction of muscular effort is improved, but the traditional manual propulsion method is disrupted
Solution Approach 1:
The motor operates periodically rather than continuously, activating during deceleration phases and deactivating during acceleration phases. This periodic operation provides assistance when needed while allowing traditional manual propulsion during acceleration, thus resolving the contradiction between reducing muscular effort and maintaining traditional use
Solution Approach 2:
The control member detects acceleration and deceleration phases through sensors that monitor scooter dynamics. This feedback mechanism allows the system to automatically adapt motor actuation to user intentions, providing assistance during deceleration while preserving manual control during acceleration phases
2Adaptability or versatility
If the motor actuates immediately after any acceleration phase, then the motor power adaptation to user forces is improved, but sudden unexpected accelerations occur disrupting user control
Solution Approach 1:
The control member is configured to wait for a deceleration phase of duration at least equal to a first predetermined threshold before actuating the motor. This preliminary waiting period allows the system to distinguish between intentional user impulses and accidental disturbances, preventing sudden unexpected accelerations while maintaining adaptive power assistance
3Productivity
If the motor provides continuous assistance to maintain speed, then the productivity is improved, but the energy consumption increases
Solution Approach 1:
The motor operates in periodic cycles, activating during deceleration phases to maintain speed and deactivating during acceleration phases when the user provides manual propulsion. This periodic operation reduces overall energy consumption compared to continuous operation while maintaining productivity by providing assistance only when the user is not actively propelling the scooter
Data Source
Figure 1A~1B
Figure 2A
Figure 2B~2C
AI summary
The invention relates to a scooter (10) comprising: - a frame (12); - a front wheel (20) and a rear wheel (22) which are fixed to the frame; - a motor (24) configured to drive the rotation of at least one out of the front and rear wheels; and - a motor control member (26). The invention is characterized in that the motor control member comprises: - acceleration detection means for detecting a phase of acceleration of the scooter; - deceleration detection means for detecting a phase of deceleration of the scooter; the control means being configured to actuate the motor when a deceleration phase of duration at least equal to a first predetermined threshold value has been detected by the deceleration detection means after an acceleration phase has been detected by the acceleration detection means.