Real-time control system and method for depth simulator

Abstract

The invention discloses a real-time control system and real-time control method for a depth simulator. A hydraulic pump station provides an oil source so that a pressure cavity generates corresponding pressure; one path of the pressure is applied onto a user sensor, and the other path is applied onto a double-range pressure sensor; a feedback voltage signal of the double-range pressure sensor acquired by PCI-1716 is transmitted to an industrial control computer and is converted into a pressure intensity signal serving as a system feedback value; the industrial control computer receives a digital depth signal transmitted by an emulation host into a pressure intensity signal serving as a reference input value of a depth simulator system, calculates an error amount and performs PID operationand converts the calculated value amount representing the depth into a voltage signal; and the open size and in / out oil of an electro-hydraulic servo valve are controlled by a PCI-1723 data output card so that a working cavity generates corresponding pressure. The invention ensures low delay and high real-time performance, reduces the emulation error and improves the control precision.

Description

technical field [0001] The invention belongs to a pressure automatic control device with real-time control function. Background technique [0002] The depth simulator is one of the main devices of the hardware-in-the-loop simulation system for underwater vehicles. It receives the voltage signal representing the navigation depth from the simulation host, converts it into a corresponding pressure signal through electro-hydraulic conversion, and applies it to the device under test. . The depth simulator is mainly used for the navigation depth simulation of underwater vehicles, and can also be used for static and dynamic pressurization tests of general pressure transmitters. [0003] Kang Fengju used 80C196KB single-chip microcomputer to realize the control system design of the depth simulator in "A New Method of Improving the Accuracy of Water Pressure Simulator", and used the automatic switching of large and small range sensors to improve the depth determination accuracy in s...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the shortcomings of existing systems such as unstable or non-real-time operation, and low control accuracy, the present invention provides a real-time control system for depth simulators based on RTX (Real Time Extension), which solves the problems of real-time and versatility of traditional depth simulators. Contradictions, improve the control accuracy of the closed-loop control loop

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