旋挖钻动力头系统的节能控制策略

发布时间：2018-03-10 07:14

本文选题：旋挖钻机　切入点：液压系统　出处：《燕山大学》2014年硕士论文　论文类型：学位论文

【摘要】：近些年来，我国旋挖钻机取得了较快发展，但是相对于国外，国内的旋挖钻机在关键部件和核心技术方面跟国外相比还有一定的差距，我国旋挖钻机的发展任重道远。旋挖钻机功率大，所以其节能性的好坏直接影响该设备的经济性和可靠性，由于世界能源危机的爆发，节能技术被各个行业所重视。本文将以XR220D旋挖钻机作为研究对象，对其发动机、液压系统及其负载的匹配进行理论和试验研究。主要完成下面的工作： 1、阐述了国内、外旋挖钻机节能控制的研究现状与发展趋势，并分析旋挖钻机钻孔作业的特点。 2、在阐述旋挖钻机作业钻孔时工艺特点以及动力系统工作原理的基础上，得出旋挖钻机能量损失的原因，并根据现行节能控制技术的研究现状，提出合理的控制策略，即发动机分工况控制以及基于转速感应的极限负荷控制综合节能控制，从而达到了使发动机输出功率与负载所需功率匹配的目的。 3、针对发动机的转速感应控制的节能控制策略，，建立其相应的数学模型，采用PID控制算法，既可以减少对发动机油门的频繁调节，同时又抑制了发动机转速的剧烈波动。而对变量泵极限负荷控制和发动机转速感应控制相协调，消除发动机的功率储备，从而达到发动机与液压系统功率传递时的匹配。 4、基于建立的数学模型，以及模糊控制算法，应用MATLAB—Fuzzy工具箱设计控制器。对该模糊PID控制系统进行MATLAB仿真分析，证明模糊控制的优越性。 5、以XR220D型旋挖钻机为对象，对该节能控制系统进行试验，验证该控制系统的有效性。
[Abstract]:In recent years, China's rotary drilling rig has made rapid development, but compared with foreign countries, domestic rotary drilling rig has a certain gap compared with foreign countries in key components and core technology. The development of rotary drilling rig in China has a long way to go. The power of rotary drilling rig is large, so its energy saving quality directly affects the economy and reliability of the equipment. Because of the outbreak of the world energy crisis, Energy saving technology has been paid more attention to in various industries. This paper will take XR220D rotary drilling rig as the research object, and carry out theoretical and experimental research on the matching of engine, hydraulic system and its load. The main tasks are as follows:. 1. The research status and development trend of energy saving control of external rotary drilling rig at home and abroad are described, and the characteristics of drilling operation of rotary drilling rig are analyzed. 2. On the basis of expounding the technological characteristics of rotary drilling rig and the working principle of power system, the causes of energy loss of rotary drilling rig are obtained, and the reasonable control strategy is put forward according to the current research situation of energy saving control technology. That is to say, the engine control based on sub-working condition and the limit load control based on speed induction can achieve the purpose of matching the engine output power with the power required by the load. 3. According to the energy-saving control strategy of engine speed induction control, the corresponding mathematical model is established and the PID control algorithm is adopted, which can reduce the frequent adjustment of engine throttle. At the same time, the violent fluctuation of engine speed is restrained, and the limit load control of variable pump and the induction control of engine speed are coordinated to eliminate the power reserve of the engine, so as to match the power transfer between engine and hydraulic system. 4. Based on the established mathematical model and fuzzy control algorithm, the controller is designed by using the MATLAB-Fuzzy toolbox. The MATLAB simulation analysis of the fuzzy PID control system proves the superiority of the fuzzy control. 5. Taking the XR220D rotary drilling rig as the object, the energy saving control system is tested to verify the effectiveness of the control system.
【学位授予单位】：燕山大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU67

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