Electric Motorbike Throttle Compensation for Thrusting Acceleration
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Solution Overview
Problem
Conventional electric motorbikes lack the thrusting acceleration experience compared to fuel-based motorbikes due to their linear power curve, making it difficult for them to compete in terms of riding feel and performance.
Innovation Solution
A system and method that detect throttle variation rates to generate high-speed torque responses, using an acceleration compensation module to calculate and apply a throttle compensation value, enhancing the motorbike's acceleration by modifying the torque command based on instantaneous throttle changes and environmental factors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the electrical motorbike uses a linear power curve for acceleration, then the rider can have precise control of speed, but the riding feeling is too smooth to lack sense of thrusting acceleration
Solution Approach 1:
The patent applies dynamics by making the power curve adjustable and adaptive rather than fixed and linear. The control system dynamically modifies the torque output based on riding conditions, throttle position, and rider preferences, transforming the static linear power delivery into a dynamic curve that can simulate fuel-based motorbike characteristics while maintaining electrical motor precision and control.
Solution Approach 2:
The patent changes the parameter of power delivery characteristics by implementing multiple selectable power curves with different acceleration characteristics. The system allows switching between linear power curves (for precise control) and non-linear power curves (for thrusting acceleration sensation), enabling parameter optimization based on riding needs without sacrificing either precision or excitement.
2Measurement precision
If the electrical motorbike accelerates through a linear power curve, then the control is precise, but it cannot provide thrusting acceleration when the rider needs rapid acceleration
Solution Approach 1:
The control system dynamically adjusts the power delivery curve based on real-time riding conditions, throttle input rate, and selected acceleration modes. This dynamic adaptation allows the system to maintain precise control during normal operation while delivering rapid thrusting acceleration when needed, resolving the contradiction between precision and rapid acceleration capability.
Solution Approach 2:
The system implements periodic or pulsed torque compensation during acceleration events, particularly when rapid acceleration is detected or selected. This periodic action superimposes additional torque on the base linear power curve, creating thrusting acceleration sensation while maintaining the underlying precise control architecture.
3Adaptability or versatility
If the electrical motorbike adopts quadratic curve or multiple points trinucleotides (T-N) curve to provide more flexible output, then the output flexibility increases, but the characteristics still cannot compete with the fuel-based motorbike in terms of thrusting acceleration
Solution Approach 1:
The system performs preliminary action by pre-calculating and storing multiple power curve profiles including advanced acceleration characteristics. When rapid acceleration is detected or selected, the system switches to pre-configured curves with higher initial torque and more aggressive acceleration profiles, enabling thrusting acceleration comparable to fuel-based motorbikes while maintaining output flexibility.
Solution Approach 2:
The patent creates a composite control strategy that combines multiple power curve types (quadratic, T-N curves, and newly defined acceleration profiles) into a unified adaptive system. This composite approach integrates the flexibility of various curve types with enhanced thrusting acceleration characteristics, achieving both adaptability and competitive acceleration performance.
Data Source
Figure 1A
Figure 1B
Figure 2
AI summary
A system for compensating acceleration of electrical motorbike (2) includes a throttle unit (21) and an electro-mechanic assembly (23). After the electrical motorbike (2) starts, the throttle unit (21) receives external operation from a rider for generating a series of original throttle signal (31). An acceleration compensating module (24) calculates a throttle variation rate (41) based on the original throttle signal (31) and variation of a throttle operation magnitude, and calculates a throttle compensating value (42) based on the throttle variation rate (41) when the throttle variation rate (41) is larger than or equal to a correction threshold. A throttle compensating module (25) receives and sums the original throttle signal (31) and the throttle compensating value (42) up for generating a new throttle signal (33). A torque controller (26) generates a corresponding torque command based on the new throttle signal (33), and outputs the torque command to the electro-mechanic assembly (23) for operation.