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Performance test device and method of general servo mechanism based on universal serial bus (USB)

A technology of servo mechanism and test device, applied in electrical testing/monitoring and other directions, can solve the problems of high cost and large volume

Active Publication Date: 2014-12-03
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention is to solve the problem that the current weapon equipment test system is composed of VXI bus modules, which is large in size and high in cost, and provides a universal servo mechanism performance test device and test method based on the USB bus

Method used

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  • Performance test device and method of general servo mechanism based on universal serial bus (USB)
  • Performance test device and method of general servo mechanism based on universal serial bus (USB)
  • Performance test device and method of general servo mechanism based on universal serial bus (USB)

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specific Embodiment approach 1

[0059] Specific implementation mode one: the following combination figure 1 Illustrate this embodiment, the universal servomechanism performance testing device based on USB bus described in this embodiment, it comprises computer 3, and it also comprises USB bus interface circuit board 1 and function circuit board 2,

[0060] The USB bus interface circuit board 1 includes a USB interface chip 1-1, a register set 1-2, an uplink FIFO control logic unit 1-4, an uplink FIFO control logic unit 1-4, a downlink FIFO control unit, and a downlink FIFO control unit. logic unit 1-6, synchronous dynamic random access memory 1-7 and controller 1-8,

[0061] The functional circuit board 2 includes a first FIFO memory 2-1, a first AD control logic unit 2-2, a first A / D conversion chip 2-3, a first 16-selection multiplexer 2-4, a first Conditioning circuit 2-5, second FIFO memory 2-6, second AD control logic unit 2-7, second A / D conversion chip 2-8, second 16-to-1 multiplexer 2-9, the second ...

specific Embodiment approach 2

[0079] Specific implementation mode two: the following combination figure 1 , Figure 7 and Figure 8 Describe this embodiment, this embodiment is a further description of Embodiment 1, this embodiment also includes an external trigger circuit 5, the trigger signal output end of the external trigger circuit 5 is connected to the trigger signal input end of the trigger and synchronization control circuit 2-11 .

[0080] Figure 7 As shown, in order to ensure the reliability and anti-interference of the signal, the EXTRG_IN signal passes through the switching transistor in turn, and is output after the optocoupler. Pin 4 of the optocoupler is connected to a 3.3V power supply through a pull-up resistor in order to be compatible with the FPGA IO port level. When EXTRG_IN is high level, the triode is turned on, so that the light-emitting diode between the input terminals 1 and 2 of the optocoupler TLP521 is turned on, and the optocoupler 4 pin outputs a low level, and the EXTRG...

specific Embodiment approach 3

[0082] Embodiment 3: This embodiment is a further description of Embodiment 1 or 2. The controller 1-8 in this embodiment is a TMS320VC3 floating-point DSP chip.

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Abstract

The invention provides a performance test device and a method of a general servo mechanism based on universal serial bus (USB) and belongs to the performance test field of a missile servo mechanism. The problems of large size and high cost of a current test system of weapons and equipments with a VXI bus module are solved. Control logic to two ways AD conversion chip and a way DA conversion chip is achieved inside a field programmable gate array (FPGA), and work of AD conversion chip and DA conversion chip can be completed at the same time through external trigger and software trigger. Excitation signals and response signals of the servo mechanism are collected at the same time through two groups of scanning AD, and thus test to static performance parameter of the servo mechanism can be achieved, and accurate test to dynamic response characteristic can also be achieved. Time interval FIFO and data FIFO are adopted inside the FPGA, so automatic control of DA waveform parameter is achieved. The performance test device and the method are suitable for the general servo mechanism.

Description

technical field [0001] The invention relates to a universal servo mechanism performance testing device and a testing method based on a USB bus, belonging to the field of missile servo mechanism performance testing. Background technique [0002] The missile control servo system is composed of an integrated amplifier and a servo mechanism. The function of the system is to drive at high speed and accurately locate the thrust vectors at all levels according to the weak electrical signal control instructions, so as to realize the control of the missile attitude and orbit. The servo mechanism system is the executive mechanism of the missile control system. It is the product of the combination of electrical and hydraulic technology. It has a complex structure and is an important link in the missile control circuit. The performance of the servo mechanism is directly related to the control stability of the missile, so the test of the servo mechanism is very important. [0003] The p...

Claims

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Application Information

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IPC IPC(8): G05B23/02
Inventor 魏长安盛云龙杨京礼姜守达刘忠林
Owner HARBIN INST OF TECH
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