Method and device for measuring current type speed of electric bicycle having permanent magnet synchronous motor as driving motor
A technology of permanent magnet synchronous motor and electric bicycle, which is applied to devices using electric/magnetic methods, etc., can solve problems such as reducing the reliability of the speed measurement system, and achieve the effect of solving the speed measurement problem and improving reliability.
Active Publication Date: 2016-12-21
HENAN NORMAL UNIV
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The current achievements are: the current achievements are: the patent "bicycle speed measurement system" with the authorization announcement number CN102087297B proposes a bicycle speed measurement device, but in this device, a photoelectric module is needed to assist in completing the speed measurement process, which reduces the speed of the speed measurement system. reliability
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[0016] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0017] Such as figure 1 Shown, the present invention comprises the following steps:
[0018] The first step is to collect the single-phase winding current of the electric bicycle drive motor , go to step two. ;
[0019] The second step is to build the observer
[0020]
[0021]
[0022] in, and are observer state variable 1 and state variable 2 respectively; is the winding voltage between the two phases of the electric bicycle drive motor; is the parameter observed by the observer; It is the control parameter 1 (value range is 0~100000); It is the control parameter 2 (value range is 0~100000); It is control parameter 3 (value range is 0~100000); It is the control parameter 4 (the value range is 0~100000); go to the third step.
[0023] The third step is to calculate the speed of the electric bicycle ,in, is the bicycle spe...
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The invention provides a method and a device for measuring a current type speed of an electric bicycle having a permanent magnet synchronous motor as a driving motor. The device comprises a current sensor, a signal amplifier, a filter, a speed estimator and a serial port output module. The current sensor acquires a single-phase winding current of the driving motor of the electric bicycle, the acquired signal is processed through the signal amplifier and the filter and is then sent to the speed estimator, after estimation through the speed estimator, the speed of the electric bicycle is outputted through the serial port output module. The device is advantaged in that the electric bicycle having the permanent magnet synchronous motor as the driving motor is taken as a research object, a speed measurement problem of the electric bicycle is solved, and reliability of a speed measurement system is improved.
Description
technical field [0001] The invention relates to a current-type vehicle speed measurement method and a measurement device for an electric bicycle whose drive motor is a permanent magnet synchronous motor. Background technique [0002] In recent years, electric bicycles have gradually become the first choice for people to travel. In the market, permanent magnet synchronous motors are widely used as driving motors for electric bicycles due to their small size and high power density. Accuracy to electric bicycles has also become one of the must-have features of electric bicycles. The current achievements are: the current achievements are: the patent "bicycle speed measurement system" with the authorization announcement number CN102087297B proposes a bicycle speed measurement device, but in this device, a photoelectric module is needed to assist in completing the speed measurement process, which reduces the speed of the speed measurement system. reliability. Contents of the...
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Login to View More IPC IPC(8): G01P3/44
CPCG01P3/44
Inventor 王立吴喜桥李雪萍宋孝辉
Owner HENAN NORMAL UNIV