Method of speed adjustment by motor controller inclination sensing for electric aided-bicycle
A motor controller, electric power assist technology, used in bicycles, electric vehicles, motor vehicles, etc.
Inactive Publication Date: 2017-03-22
TIANJIN GOLDEN WHEEL XINDE BICYCLE IND
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Problems solved by technology
[0003] The technical problem to be solved by the present invention is to provide an electric power-assisted bicycle motor controller inclination sensing speed regulation method, which measures the road surface inclination according to the motor inclination sensor, and uses the inclination as the In addition to the cadence, there is another input parameter to adjust the output power of the motor, thereby overcoming the difficulty of riding when the road surface is steep and the fluctuation of normal riding speed on flat roads
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[0014] In order to further understand the invention content, characteristics and effects of the present invention, the following examples are given, and detailed descriptions are as follows in conjunction with the accompanying drawings:
[0015] see Figure 1 to Figure 2 , an electric power-assisted bicycle motor controller inclination sensing speed regulation method,
[0016] like figure 1 As shown, this preferred embodiment adds a slope angle sensor to the hardware design of the traditional technology, that is, the input signal of the angle sensor is added on the basis of the traditional cadence signal, brake signal and vehicle speed feedback, and the actual riding process is perceived. The change in grade of the road surface provides an input variable for the motor drive controller software algorithm. During the normal riding process of the rider, when the road slope is positive, the motor driver increases the output power of the motor; when the slope is slightly negative...
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The invention discloses a method of speed adjustment by motor controller inclination sensing for an electric aided-bicycle. The method is characterized by at least comprising the following steps of: step 1, acquiring riding pedaling frequency X and a road surface gradient Y, sending the riding pedaling frequency X and the road surface gradient Y to a motor controller; step 2, calculating a motor drive current L according to the following formula: L = K (A*X+B*Y+C) by the motor controller, wherein K is a motor current control parameter, A is a pedaling frequency drive proportion parameter, B is a road surface gradient start parameter, and C is a riding constant; and step 3, adjusting and controlling the bicycle speed according to the motor drive current L by the motor controller. According to the technical scheme of the method disclosed by the invention, the inclination of a road surface is measured by a motor inclination sensor, and is used as another input parameter which adjusts the output power of the motor apart from the pedaling frequency, so the problems of the riding difficulty caused by a big road surface gradient and speed fluctuation during normal riding on a flat road are solved.
Description
technical field [0001] The invention relates to the technical field of electric power-assisted bicycles, in particular to a method for adjusting speed by inclination angle sensing of a motor controller of electric power-assisted bicycles. Background technique [0002] At present, most of the assisting modes of electric assist bicycles are cadence assisting mode and torque assisting mode. In the cadence mode, due to the increase of resistance on the uphill road, the reduction of the cyclist's cadence leads to a decrease in the output power of the motor, which runs counter to the increase in the output power of the motor on slopes, making it difficult to ride a power-assisted bicycle on slopes. The torque mode overcomes the problem of riding on slopes, but in the normal riding process, due to torque fluctuations during the cadence process, the riding speed will then form a slight sinusoidal curve vibration, and you can feel fast and slow during the riding experience. Slow, th...
Claims
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IPC IPC(8): B62M6/45B60L15/20
CPCB60L15/20B60L2200/12B60L2240/12B60L2240/423B60L2240/429B60L2240/642B62M6/45Y02T10/72
Inventor 李珍昆
Owner TIANJIN GOLDEN WHEEL XINDE BICYCLE IND