Position and speed measuring device based on inductosyn or rotary transformer
A technology of resolver and inductive synchronizer, applied in measurement devices, speed/acceleration/shock measurement, devices using electric/magnetic methods, etc., can solve problems such as signal frequency changes
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[0088] The invention includes an excitation circuit, an induction synchronizer or a rotary transformer, a signal processing circuit, and a central processing unit. The excitation signal is generated by the excitation circuit and power is amplified. After the power signal passes through the induction synchronizer or the rotary transformer, it is filtered by the signal processing circuit, After amplification, phase shifting and shaping, it is sent to the central processing unit, and the processing steps of the program in the central processing unit are:
[0089] 1) Identify the phase information of the signal;
[0090] 2) Determine whether phase correction is necessary. If the system also requires position during dynamic measurement, it is necessary to correct the phase first. The correction formula is derived from equations (5), (10), and (11):
[0091] θ t ′ = θ t ( ...
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