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Double-DSP redundancy inertial-platform controller

An inertial platform and controller technology, applied in general control systems, control/regulation systems, instruments, etc., can solve the problem of lack of a backup controller and inability to run the processor, to ensure normal and stable operation, ensure safe operation, and ensure The effect of precision and stability

Active Publication Date: 2014-07-02
严格集团股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that the processor of the current inertial navigation system cannot operate due to the lack of a backup controller. The present invention provides a dual DSP redundant inertial platform controller

Method used

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  • Double-DSP redundancy inertial-platform controller

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Experimental program
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specific Embodiment approach 1

[0023] Specific implementation mode one: combine figure 1 , figure 2 and image 3 Describe this embodiment, the dual DSP redundant inertial platform controller described in this embodiment, the controller includes an AD conversion circuit 1, an IO circuit 2, a bus module 3, a power output module 4, a switching module 5, and a decision module 6 , the first DSP processor 7 and the second DSP processor 8;

[0024] The gyro digital signal output end of the AD conversion circuit 1 is connected with the gyro digital signal input ends of the first DSP processor 7 and the second DSP processor 8 at the same time, and the data output end of the IO circuit 2 is connected with the first DSP processor through an optocoupler at the same time. 7 is connected to the data input end of the second DSP processor 8, and the working status signal output end of the first DSP processor 7 is connected to the work of the second DSP processor 8 through McBSP (Multichannel Buffered Serial Port, multic...

specific Embodiment approach 2

[0030] In this embodiment, the switching module is realized by a first-level switching circuit. The selection signal generated by the decision module determines the PWM signal of which DSP processor to output. If the output of the decision module is 0, the PWM signal of the first DSP processor 7 is output. , if the combinational logic output is 1, the PWM signal of the second DSP processor 8 is output. Specific implementation mode two: combination Figure 4 Describe this embodiment, this embodiment is a further limitation to the dual DSP redundant inertial platform controller described in the first embodiment, the decision module 6 includes an FPGA module, a detection module and a combinational logic circuit;

[0031] The FPGA module is used to determine whether the first DSP processor 7 breaks down by detecting the pulse signal of the GPIO pin of the first DSP processor 7, and sends the first DSP processor 7 failure judgment signals to the combinational logic circuit;

[003...

specific Embodiment approach 3

[0035] Specific implementation mode three: combination Figure 5 This embodiment is described. This embodiment is a further limitation of the dual DSP redundant inertial platform controller described in the second specific embodiment. The detection module is a monostable flip-flop circuit, and is realized by a monostable flip-flop SN54LS123J .

[0036] Such as Figure 7 As shown, a retriggerable monostable flip-flop 74LS123 is used to detect whether the FPGA module fails. When the input is a clock signal, the reverse output port of the flip-flop can generate a negative pulse, and the value of the external capacitor and resistance can be adjusted to set the width of the negative pulse. When the negative pulse width is greater than one period of the input clock and less than two periods, its reverse output port is no longer a negative pulse sequence, but a low level. When the input clock signal suddenly no longer changes from high to low, its reverse output port jumps to high...

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Abstract

The invention provides a double-DSP redundancy inertial-platform controller and belongs to the field of platform stable loop control, follow-up ring follow-up control and follow-up ring locked control. The double-DSP redundancy inertial-platform controller aims to solve the problem that when a processor of an existing inertial navigation system breaks down, operation cannot be conducted due to a lack of a standby controller. The double-DSP redundancy inertial platform controller comprises an AD conversion circuit, an IO circuit, a bus module, a power output module, a switching module, a judging module, a first DSP and a second DSP. The AD conversion circuit is in communication with the two DSPs at the same time. An IO circuit is in communication with the two DSPs at the same time through an optocoupler. The second DSP monitors the work state of the first DSP through a McBSP. The judging module is used for judging the state of the judging module and the work state of the first DSP. The switching module conducts switching on the first DSP and the second DSP according to signals of the judgment module. The power output module outputs PWM signals according to switching signals. The bus module is used for receiving data of the power outputting module, the first DSP and the second DSP. The double-DSP redundancy inertial-platform controller is used for an inertial platform of the inertial navigation system.

Description

technical field [0001] The invention belongs to the field of platform stabilization loop control, follow-up control of a moving ring and locking control of a moving ring. Background technique [0002] Inertial platform widely used in inertial navigation system, also known as gyro-stabilized platform, is an important component in inertial navigation. By establishing a reference coordinate system on the aircraft that is not affected by the movement of the aircraft, the attitude information of the aircraft is measured. The stability of the inertial platform will have a decisive impact on the entire navigation system. [0003] With the development of computer technology, high-speed, high-integration, low-cost microprocessors came out and were quickly commercialized. With their strong advantages in data calculation and control capabilities, microprocessors have been widely used in aerospace, navigation, and military affairs. , industrial automation, transportation, energy and o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B9/03G01C21/18
Inventor 薛红琳吴钊君李达王强罗晶
Owner 严格集团股份有限公司
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