Servo Treadmill Drive With Encoder Feedback for Variable Exercise Modes
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Solution Overview
Problem
Traditional treadmills lack variability and interest, leading to exercise fatigue and reduced fitness effectiveness due to monotonous exercise modes.
Innovation Solution
A driving device for treadmills incorporating a servo motor with an encoder, a controller, and a transmission shaft, enabling bidirectional and unidirectional rotation changes to create horizontal vibration and rotation, along with a speed-regulating mechanism and communication modules for diverse exercise modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a traditional single-function driving mechanism is used, then the device complexity is low, but the exercise mode variety is limited
Solution Approach 1:
The servo motor is designed to perform multiple functions: it can rotate unidirectionally for forward running, rotate bidirectionally for backward running, and generate horizontal vibrations for vibration exercise modes. This multi-functionality allows a single driving mechanism to replace what would traditionally require multiple separate mechanisms, thereby increasing exercise mode variety while controlling device complexity
Solution Approach 2:
The driving mechanism transitions from static single-direction rotation to dynamic multi-directional operation. The servo motor dynamically adjusts its rotation direction (forward/reverse) and motion pattern (continuous rotation/vibration) based on control signals, enabling the treadmill to switch between different exercise modes using the same hardware components
2Adaptability or versatility
If bidirectional rotation with vibration is implemented, then exercise mode variety is improved, but the control system complexity increases
Solution Approach 1:
An encoder is integrated into the servo motor to provide real-time feedback on the motor's rotation angle, speed, and position to the controller. This feedback mechanism enables the controller to precisely regulate the servo motor's bidirectional rotation and vibration generation, achieving complex exercise modes through a manageable control system that can respond dynamically to actual motor state
3Adaptability or versatility
If horizontal vibration during unidirectional rotation is added, then fitness effectiveness is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The patent replaces complex mechanical vibration generation mechanisms with an electronically controlled servo motor system. The servo motor, controlled through electronic signals and feedback from the encoder, generates horizontal vibrations during rotation without requiring precision-machined mechanical vibration components. This substitution of mechanical systems with electro-mechanical control reduces manufacturing precision requirements while achieving the desired vibration exercise function
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
Enhances user experience and fitness effectiveness by providing varied exercise modes, including horizontal vibration and unidirectional rotation, promoting physiological health and convenience through multiple interaction options.
Implementation Method 1
the encoder is used to feed back parameters such as a rotor angle (position), speed, a current and the like of the motor back to the controller in real time for closed-loop or semi-closed-loop control
Implementation Method 2
the servo motor is internally and/or externally provided with an encoder, and the encoder is connected to the controller; and a transmission shaft of the servo motor is in transmission connection with the roller of the treadmill
Implementation Method 3
When the rotation angle of the servo motor is in bidirectional alternate change, the roller of the treadmill is driven to vibrate horizontally
Data Source
AI summary
A driving device of a treadmill includes a roller, a servo motor, and a controller. The servo motor is internally and/or externally provided with an encoder, and connected to a controller through the encoder. A transmission shaft of the servo motor is in transmission connection with a roller of the treadmill. The controller is used to adjust change direction and change amplitude of a rotation angle of the servo motor by transmitting a control signal to the encoder, thus driving the roller of the treadmill to vibrate horizontally or rotate in one direction. The treadmill includes a running platform, a wear-resisting plate arranged on an upper side of the running platform, a belt wrapped around the roller and the running platform, and the driving device. The roller in the driving device is in transmission connection with the belt.