Skating Device Motor Torque Control via Acceleration Sensors
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Solution Overview
Problem
Existing skating devices with electric motors struggle to balance propulsion torque with the unstable posture of users, often rendering the devices as electrically driven vehicles rather than allowing traditional skating experiences.
Innovation Solution
A skating device with an electric motor coupled to wheels via a gear transmission, equipped with acceleration and speed sensors that detect user input to modulate torque based on skating conditions, allowing assisted skating by providing thrust when the user is in the correct posture, with adjustable parameters for latency, length, and intensity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If an electric motor is added to provide propulsion assistance, then the user receives thrust assistance, but the device transforms into an electrically driven vehicle losing traditional skating experience
Solution Approach 1:
The system uses acceleration sensors to detect user thrust actions and provides feedback control by modulating motor torque accordingly. The control unit receives signals from acceleration sensors, determines when the user is performing a thrust action, and adjusts electric motor power delivery to assist rather than replace user input, preserving the skating experience while providing power assistance.
Solution Approach 2:
The system dynamically adjusts motor torque based on real-time detection of user posture and thrust actions. The control unit continuously monitors acceleration sensor data and modifies power delivery in response to changing user actions, transitioning between assisted skating mode and pure user-powered mode to maintain the authentic skating experience.
2Force
If torque is increased to provide stronger propulsion assistance, then thrust capability improves, but balance with unstable user posture deteriorates
Solution Approach 1:
The control system continuously monitors acceleration sensors to detect user posture and thrust actions, using this feedback to dynamically adjust torque delivery. By sensing when the user is performing a thrust action and modulating motor response accordingly, the system provides thrust assistance while adapting to the user's unstable posture, preventing loss of balance.
Solution Approach 2:
The system changes torque parameters dynamically based on detected user actions. The control unit adjusts motor output parameters (torque magnitude, timing, duration) in response to acceleration sensor signals, modifying propulsion characteristics to match the user's instantaneous posture and movement state, thereby maintaining stability while providing assistance.
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
Enables users to enjoy traditional skating while receiving assistance, maintaining balance between propulsion force and posture stability, with adjustable settings for personalized assistance and efficient energy use.
Implementation Method 1
at least one acceleration sensor operatively coupled with at least one wheel of said plurality of wheels to detect positive acceleration thereof following a thrust performed by the user on said skating device
Implementation Method 2
at least one speed sensor operatively coupled with at least one wheel of said plurality of wheels to measure the speed of said skating device
Implementation Method 3
an electric motor operatively coupled with at least one wheel of said plurality of wheels
Data Source
AI summary
Skating device (1) provided with a plurality of wheels (2a, 2b, 2c, 2d), comprising:an electric motor (3) operatively coupled with at least one wheel (2a) of said plurality of wheels;at least one acceleration sensor (4) operatively coupled with at least one wheel (2a) of said plurality of wheels (2a, 2b, 2c, 2d);at least one speed sensor operatively coupled with at least one wheel (2a) of said plurality of wheels (2a, 2b, 2c, 2d); andat least one control unity adapted to actuate the operations of said electric motor (3) at least when said acceleration sensor (4) detects positive acceleration of said at least one wheel (2a), wherein the amount of electric power supplied by said electric motor to said at least one wheel (2a) is calculated according to the speed measured by said at least one speed sensor (5), at least when said acceleration sensor (4) detects said positive acceleration.