Shock Absorber Resistance Adjustment with Stepper Motor Feedback
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Solution Overview
Problem
Existing shock absorbers in mountain bikes require manual adjustment of telescopic resistance using tools, which is inconvenient and inaccurate.
Innovation Solution
A shock absorber control system with a resistance adjustment device comprising a driving unit, return detection unit, and control unit, utilizing a stepper motor and encoder to automatically and accurately adjust telescopic resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual adjustment using tools is used, then the shock absorber can be adjusted, but the adjustment process is inconvenient and inaccurate
Solution Approach 1:
The patent replaces the manual mechanical adjustment system with an automated electromechanical system. A motor drives a screw mechanism that automatically adjusts the telescopic resistance, eliminating the need for manual tool-based adjustment. The control unit receives signals and automatically controls the motor to achieve precise resistance adjustment without human intervention, thereby improving both convenience and accuracy.
2Ease of operation
If automated adjustment system is implemented, then adjustment convenience is improved, but device complexity increases
Solution Approach 1:
The control unit serves multiple functions: it receives adjustment signals, controls the motor operation, monitors the encoder feedback, and manages the overall adjustment process. By consolidating these functions into a single control unit, the patent reduces overall system complexity while maintaining automated adjustment capabilities and user convenience.
Solution Approach 2:
The encoder provides real-time feedback on the motor's rotation angle to the control unit. This feedback mechanism allows the control unit to precisely control the adjustment process and know when the desired resistance level is reached, enabling accurate automated adjustment without requiring complex override systems.
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 precise and automated adjustment of shock absorber resistance, enhancing user convenience and accuracy in adjusting shock absorption.
Implementation Method 1
the encoder is used to sense a rotation angle of the stepper motor and generate an angle signal
Implementation Method 2
the stepper motor is used to be controlled to operate and drive the transmission part
Implementation Method 3
the detector is used to generate a return signal when the positioning part is detected by the detector
Data Source
AI summary
A shock absorber control system used in a shock absorber has a resistance adjustment device, and the resistance adjustment device has a driving unit, a return detection unit and a control unit, and the driving unit is installed in a shell structure. The driving unit has a transmission part, an encoder and a stepper motor. The stepper motor adjusts a telescopic resistance of the shock absorber via the transmission part. The encoder senses a rotation angle of the stepper motor. The return detection unit senses a rotation position of the transmission part in relative to the shell structure. When the control unit is awakened, it firstly controls the stepper motor to rotate to decrease the rotation angle, and then when receiving a return signal of the return detection unit, the control unit control the stepper motor to rotate to the last recorded rotation angle.