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Calibration device and method of engine instruction and control matching performance tester

An engine and matching technology, applied in the direction of program control, general control system, electrical test/monitoring, etc., can solve the problems of uncertain time parameters and their variation, high system cost, etc.

Inactive Publication Date: 2016-05-25
西安航天计量测试研究所
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0007] In order to solve the technical problems of high system cost and uncertainty of each time parameter in the actual current waveform and its variation in the calibration of the existing engine command and control matching tester, the present invention provides an engine command and control matching tester Calibration device and calibration method

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  • Calibration device and method of engine instruction and control matching performance tester

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Embodiment Construction

[0073] The present invention will be described in detail below in conjunction with the drawings.

[0074] Such as Figure 5 As shown, the engine command and control matching tester calibration device includes a microprocessor, multiple data latches, multiple memories, digital-to-analog converters, filters, voltage-current converters, communication interfaces, crystal oscillator circuits, and two Frequency division circuit, data selector, binary counter, decoder. The microprocessor unit is connected to the measurement and control computer through a communication interface. The microprocessor unit contains key input and digital display parts. The data bus of the microprocessor unit is connected to the data input end of the data latch, and the 2n-bit address chip select signal generated by the address bus and the latch enable signal CP of the data latch 1 ~CP 2n The four IO lines are respectively connected with the selection control signal S end of the data selector, the input B e...

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Abstract

The invention relates to a calibration device and method of an engine instruction and control matching performance tester. The calibration device comprises a microprocessor, a data selector, a frequency-halving circuit, a crystal oscillation circuit, a binary counter, a decoder and n calibration channels; and each calibration channel comprises a data latch register, a memory, a digital-analog converter, a filter and a voltage-current converter. According to the invention, the technical problems that a present engine instruction and control matching performance tester is high in system cost and different time parameters and variable thereof in practical current waveform are uncertain are solved; and multiple parameters of the calibration device can be set, so that the calibration device can be used to calibrate devices with different parameter requirements, and can be applied to calibration of the calibrated devices under different working conditions.

Description

Technical field [0001] The invention relates to a calibration method of an engine special test instrument, in particular to a calibration method and device of an engine command and control matching tester. The calibration method of the engine command and control matching tester has high accuracy, the calibration device has a simple structure, low cost and reliable performance. Background technique [0002] The engine command and control matching tester is a special test instrument for engines, which is used to test the closing and opening time and working sequence of each solenoid valve action after the electric signal command is issued in the engine. Its basic working principle is as figure 1 Shown. figure 1 In, the engine control unit generates a set of voltage square waves according to the control program. During the high level period of the voltage square wave, a drive current is generated by the solenoid valve drive unit and flows through the solenoid valve drive coil to ma...

Claims

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Application Information

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IPC IPC(8): G05B23/02
CPCG05B23/0243G05B2219/25055
Inventor 孙新新常莹张周焕杜栓才
Owner 西安航天计量测试研究所
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