SSI (Small Scale Integration) data transmitter for rotary encoder based on CPLD (Complex Programmable Logic Device)/FPGA (Field Programmable Gate Array)
A technology of data transmitter and encoder, which is applied in the direction of comprehensive factory control, comprehensive factory control, electrical program control, etc., can solve the problem that resolver encoders do not have SSI communication interface mode, limit the application of absolute encoders, and do not provide interfaces Converter and other issues, to achieve high environmental adaptability, high reliability, and improve the effect of communication rate
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[0016] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.
[0017] The present invention provides a kind of SSI data transmitter for rotary encoder based on CPLD / FPGA, such as figure 1 As shown, the SSI data transmitter mainly includes RD controller 1 , SSI communication interface 2 , FIFO3 (First In First Out queue, First Input First Output, FIFO) and RD decoder 4 . The RD decoder 4 is a dedicated decoding chip for the rotary transformer 6, and its model is 2S1200. The RD decoder 4 provides a high-frequency excitation power signal to the rotary transformer 6 to stimulate the rotary transformer 6 to generate a sine-cosine function relationship with the rotation angle. Simultaneously, the RD decoder 4 receives the sine and cosine analog signals from the resolver, converts them into digital signals and outputs them to the RD controller 1. The RD controller 1 is connected to the RD decoder 4 and the FIFO3 throug...
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