Rider Propulsion TRIZ Cases
- Torque Estimation via Angular Velocity Fluctuations
Angular velocity sensors analyze speed deviations from a sinusoidal curve to estimate torque, eliminating complex exposed mechanical torsion sensors.
- Electric Bicycle Battery Layout with Drive Control Housing
A battery layout structure positions the drive control device beneath subframes to house electrical components within a compact frame.
- Control Unit for Electric Bicycle Gear Shifting
A control unit coordinates electric and mechanical drive units to optimize torque conversion during gear changes.
- Rotary Force Transfer Mechanism for Human-Powered Machines
A rotary force transfer mechanism uses a rack gear to transmit linear input force tangentially to a rotating structure.
- Bicycle Sensor Signal Phase Analysis for Motor Assist Control
Controller compares sensor signal phase and period differences to distinguish wheel from crank rotation, preventing inappropriate motor assist operation.
- Carbon Fiber Snowmobile Frame Weight Reduction
Replacing metal with carbon fiber-reinforced plastic resolves the contradiction between reducing vehicle body weight and maintaining sufficient strength.
- Motorized Bicycle Controller Terrain Mode Switching
A motorized bicycle controller switches between pedal regeneration and assistance modes based on detected terrain conditions.
- E-bicycle Drive Device Cadence-Based Assistance Control
Electronic control unit adjusts electric motor torque based on bottom bracket shaft rotation speed to provide selectable assistance levels.
- Snowmobile Bumper Segmentation for Towing Strength
Segmenting the bumper into separate lift and tow units resolves installation complexity while delivering enhanced towing strength.