一种土工三轴实验仪控制器系统的设计与实现

Design and realization of the controller system for soil triaxial apparatus

针对土工三轴实验仪实验精度不高,实验功能单一的特点,设计了一个土工三轴实验仪控制器系统。该控制器基于MSP430F149设计,控制实验仪完成高精度多功能实验,极大地挖掘了实验仪器的价值。该控制器作为土工三轴实验仪的核心控制部分,软件采用流程模块化设计,在不改变实验仪装置结构配件的前提下,由上位机根据实验流程灵活组态,实现多种实验。在控制方面,采用PID控制算法,通过高精度伺服电机配合MSP430F149实现高精度控制。现场运行效果表明,控制器系统架构合理、控制性能好、可靠性高、稳定性强,能够实现实验的多功能化及高精度控制需求。

Aiming at the deficiencies of low precision and lack of rich experiment functions in traditional soil triaxial apparatus, an automatic controller system is developed in this paper. Based on MSP430F149, this controller is able to control the apparatus to accomplish high-precision and multi_function test. It greatly enhances the practical value of the instrument. Working as the core of the soil triaxial apparatus, its software is designed in modularization way. On the precondition of keeping the triaxial apparatus structure, the modules can be flexibly adjusted according to different test flows to accomplish different tests. In the aspect of control, PID control approach is employed and high precision servo electromotor is adopted. The results of practical operation show that the system structure is rational. It has good control performance, high reliability and good stability, and it can satisfy the requirements of high-precision and multifunction control.