A high-response resolver decoding method and system
A resolver and decoding method technology, which is applied in the high-response resolver decoding method and system field, can solve problems such as phase delay, reduce system response speed, and affect rotor position estimation accuracy, so as to avoid phase delay, optimize performance, and improve response Effects of Speed and Reliability
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Embodiment 1
[0054] refer to Figure 1 to Figure 8 , is the first embodiment of the present invention, which provides a high-response resolver decoding method, including:
[0055] S1: Generate the excitation signal and send it to the primary side of the resolver.
[0056] The expression of the excitation signal is:
[0057] U ref =V sin(ω e t)
[0058] Among them, U ref is the excitation signal, V is the amplitude of the excitation signal, ω e is the angular frequency of the excitation signal, and t is the time.
[0059] S2: Collect the sine envelope signal, cosine envelope signal and excitation signal output by the resolver through the ADC module.
[0060] It should be noted that the resolver is a kind of electromagnetic sensor, which consists of a stator and a rotor; the excitation voltage is applied to the stator winding located on the primary side of the resolver, and the rotor winding located on the secondary side of the resolver is obtained through electromagnetic coupling. I...
Embodiment 2
[0106] In order to verify and explain the technical effect adopted in this method, in this embodiment, the method of demodulating and filtering using a low-pass filter is selected to carry out a comparative test with this method, and the test results are compared by means of scientific demonstration, so as to verify the authenticity of this method. Effect.
[0107] Build in Simulink as figure 2 In the simulation model shown, the excitation voltage is a sine signal with an amplitude of 10V and a frequency of 10KHz, the rotor frequency is set to 200Hz, and the sine and cosine envelope signals are obtained by multiplying the sine and cosine signals with a frequency of 200Hz and the excitation signal.
[0108] As a comparison, the cutoff frequency of the low-pass filter is set to 2000Hz, and the simulation time is set to 0.6s. The simulation results are as follows Figure 9 As shown, the solid line sawtooth wave is the rotor position decoded by this method, the dotted line sawto...
Embodiment 3
[0112] refer to Figure 13 , is the third embodiment of the present invention, which is different from the first embodiment in that it provides a high-response resolver decoding system, including:
[0113] The signal excitation module 100 is used to generate the excitation signal and transmit the excitation signal to the resolver 200 ;
[0114] The resolver 200 and the signal excitation module 100 are used for receiving the excitation signal and can generate sine and cosine envelope signals; specifically, after the resolver 200 receives the excitation signal, it drives the primary side of the resolver 200 to drive the secondary side, and then Generate induced sine and cosine envelope signals.
[0115] The signal acquisition module 300 is connected to the input terminal and the output terminal of the resolver 200 . The signal acquisition module 300 in this embodiment may use, for example, an ADC module, which is used to acquire sine and cosine envelope signals and excitation s...
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