基于PID-MPC的喷混凝土机器人手臂的电液比例系统的精度控制策略的研究
Kun Zhang1, Heng Zhang1, Zhaoyun Zhang2
1Shandong University of Science and Technology, Qingdao, 266590, China.
Scientific reports
|October 14, 2025
概括
本研究引入了一种新的PID-MPC控制策略,以提高非线性电液系统的动态响应和准确性,特别是用于混凝土机器人. 新方法在复杂条件下显著提高了控制性能.
科学领域:
- 机器人技术 机器人技术 机器人技术
- 控制系统工程 控制系统工程
- 液压系统 水力系统
背景情况:
- 非线性电动液压系统对于石机器人至关重要,经常遭受慢动态响应和歇斯底里.
- 传统的PID控制器在高度非线性环境中缺乏稳定性,而模型预测控制 (MPC) 可能是计算密集的.
- 在复杂的工作条件下优化喷机器人的控制性能对于效率和准确性至关重要.
研究的目的:
- 开发和验证非线性电液系统的先进控制策略.
- 为了提高 shotcrete 机器人控制的动态响应,跟踪精度和稳定性.
- 在现实应用中解决传统PID和独立MPC控制器的局限性.
主要方法:
- 电-液压比例控制系统的数学建模.
- 信号预处理使用波段软值表示收集的操作数据.
- 通过粒子群优化 (PSO) 通过最小平方估计识别系统参数.
- 实施双循环PID-MPC控制策略 (PID内部循环,MPC外部循环).
主要成果:
- 通过PSO增强的参数识别实现了高精度的系统传输功能.
- 拟议的PID-MPC控制器与传统的PID控制器相比,显示出更高的响应性和跟踪精度.
- 观察到最大追踪误差 (延伸:0.13 m/s至0.04 m/s;旋转:8°/s至4°/s) 和沉降时间 (延伸:3.0 s至0.45 s;旋转:2.6 s至0.8 s) 的显著减少.
结论:
- 双环PID-MPC策略为复杂的电液系统提供了实用和有效的解决方案.
- 这种方法提高了喷机器人的性能,使得操作更加精确和高效.
- 为开发智能和高效的喷混凝土设备提供了坚实的理论基础.
更多相关视频
09:01Gain-compensation Methodology for a Sinusoidal Scan of a Galvanometer Mirror in Proportional-Integral-Differential Control Using Pre-emphasis Techniques
Published on: April 4, 2017
9.1K
08:35Interactive and Visualized Online Experimentation System for Engineering Education and Research
Published on: November 24, 2021
2.9K
相关概念视频
PID Controller
646
Proportional-Integral-Derivative (PID) controllers are widely used in various control systems to enhance stability and performance. In a thermostat, it adjusts heating or cooling based on the temperature difference between the actual and desired levels. They are often used in automotive speed systems, effectively managing sudden speed changes while maintaining a constant speed under varying conditions. On the other hand, PI controllers, commonly employed in voltage regulation, enhance stability...
646
Time-Domain Interpretation of PD Control
371
Proportional-Derivative (PD) control is a widely used control method in various engineering systems to enhance stability and performance. In a system with only proportional control, common issues include high maximum overshoot and oscillation, observed in both the error signal and its rate of change. This behavior can be divided into three distinct phases: initial overshoot, subsequent undershoot, and gradual stabilization.
Consider the example of control of motor torque. Initially, a positive...
Consider the example of control of motor torque. Initially, a positive...
371
PD Controller: Design
622
In automotive engineering, car suspension systems often employ Proportional Derivative (PD) controllers to enhance performance. PD controllers are utilized to adjust the damping force in response to road conditions. A controller, acting as an amplifier with a constant gain, demonstrates proportional control, with output directly mirroring input.
Designing a continuous-data controller requires selecting and linking components like adders and integrators, which are fundamental in Proportional,...
Designing a continuous-data controller requires selecting and linking components like adders and integrators, which are fundamental in Proportional,...
622
PI Controller: Design
1.2K
Proportional Integral (PI) controllers are a fundamental component in modern control systems, widely used to enhance performance and mitigate steady-state errors. They are particularly effective in applications such as automatic brightness adjustment on smartphones, where they excel at mitigating steady-state errors for step-function inputs. Unlike PD controllers, which require time-varying errors to function optimally, PI controllers leverage their integral component to address residual...
1.2K
Time and frequency -Domain Interpretation of PI Control
396
Proportional-Integral (PI) controllers are essential in many control systems to improve stability and performance. They are commonly used in everyday devices like thermostats to enhance system damping and reduce steady-state error. When the zero in the controller's transfer function is optimally placed, the system benefits significantly in terms of stability and accuracy.
Acting as a low-pass filter, the PI controller slows the system's response and extends settling times. This requires...
Acting as a low-pass filter, the PI controller slows the system's response and extends settling times. This requires...
396
Pumped Concrete
349
Concrete in large quantities can be pumped across long distances for placing in inaccessible sites. This system comprises a hopper that receives concrete from a mixer, a pump to propel the concrete, and pipelines that facilitate its delivery.
For direct-acting pumps, the concrete enters the pump via the inlet valve under the action of gravity and suction created by the movement of the piston. This concrete is then forced into the pipeline and out through the outlet valve by the forward movement...
For direct-acting pumps, the concrete enters the pump via the inlet valve under the action of gravity and suction created by the movement of the piston. This concrete is then forced into the pipeline and out through the outlet valve by the forward movement...
349
