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Fuzzy PID algorithm based ship course controller

A controller and ship technology, applied in two-dimensional position/channel control, non-electric variable control, control/regulation system, etc., can solve problems such as difficulty in guaranteeing control effect, affecting system stability, and difficulty in parameter adjustment. Achieve good adaptability, system stability, and output error reduction

Inactive Publication Date: 2016-09-21
WUHAN UNIV OF TECH
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AI Technical Summary

Problems solved by technology

Adaptive rudder has achieved certain results in improving control accuracy and reducing energy consumption, but the cost of physical implementation is high, and parameter adjustment is difficult. Especially because of the nonlinearity and uncertainty of the ship, the control effect is difficult to guarantee, and sometimes even affects the system. stability

Method used

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  • Fuzzy PID algorithm based ship course controller
  • Fuzzy PID algorithm based ship course controller
  • Fuzzy PID algorithm based ship course controller

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Embodiment Construction

[0038] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0039] Such as figure 1 As shown, the main input unit of the ship heading controller is used to obtain the ideal rudder angle deflection and output according to the rudder angle required by the ship and the output of the stepper motor drive unit;

[0040] The analog-to-digital conversion unit is used to perform digital-to-analog conversion on the output of the PID adjustment unit and send it to the PWM signal output unit, and is also used to perform digital-to-analog conversion on the output of the stepping motor drive unit and send it to the input unit;

[0041] The fuzzy parameter correction unit is used for performing f...

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Abstract

The invention discloses a ship course controller based on a fuzzy PID algorithm. The controller includes: an input unit for obtaining an ideal rudder angle deflection according to the rudder deflection angle required by the ship and the output of a stepping motor drive unit; The digital conversion unit is used for digital-to-analog conversion and analog-to-digital conversion; the fuzzy parameter correction unit is used to perform fuzzy parameter correction according to the output of the stepper motor drive unit and the ideal rudder angle deflection; the PID adjustment unit is used to correct the fuzzy parameter according to the fuzzy parameter correction unit and The output of the stepper motor drive unit is adjusted by PID; the PWM signal output unit is used to output the PWM waveform for controlling the work of the stepper motor according to the output of the PID adjustment unit; the stepper motor drive unit is used to drive the stepper motor to control the course of the ship , and feed back the position, speed and rudder angle of the ship in real time. The invention aims at adopting the fuzzy PID control algorithm to realize the self-adaptive control of the ship steering gear.

Description

technical field [0001] The invention relates to ship control technology, in particular to a ship heading controller based on a fuzzy PID algorithm. Background technique [0002] With the development of the world's financial and trade industry, the maritime trade between countries has become increasingly frequent, and the entire ship market has been rising steadily, showing an unprecedented momentum. At present, the course control of merchant ships cannot meet the actual needs, and the course control technology is particularly inferior, which makes the shipping efficiency low and hinders maritime trade. As the controlled object of ship course control, steering gear is an important equipment for ship navigation. For some common steering gear control systems, there are many problems such as low system acquisition accuracy, insufficient system response, unsatisfactory steering gear deflection accuracy, and insufficient coordination of steering gear transmission. [0003] In th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D1/02
CPCG05D1/0206
Inventor 许湘莲安蒙强
Owner WUHAN UNIV OF TECH
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