A Design of Dissimilar Dual Redundancy Digital Steering Control Box Based on FPGA and DSP

In order to prevent the similar redundant system occurring common fault avalanche damage, the dissimilar dual redundancy digital steering control box is designed. The control box is composed of FPGA controller and DSP controller. Through the use of FPGA, the device number is simplified, and the product integration and reliability are improved. Through FPGA and DSP controller of data exchange and synchronization output, the design difficulties due to the different and similar software is avoided, the development difficulty and cost are reduced. Method and skill of the presented data exchange and synchronous operation provide a new idea for the design of the control box.