混凝土泵車臂架的遙控器開發(fā)及動力學(xué)模型研究
[Abstract]:Concrete pump car is one of the most widely used mechanical equipment in construction industry. It has many advantages, such as flexible operation, convenient and efficient operation and so on. The boom of concrete pump truck is a multi-degree of freedom redundant system, stretching up to tens of meters. The working environment of pump car is complex, the traditional control adopts the manual control mode of single-link jib operation. With the development of technology and the need of construction, how to control the coordinated, smooth, accurate and reliable movement of the boom of pump has become a hot topic in recent years. This paper mainly includes two parts: one is to complete the design and manufacture of remote control device of the boom of pump vehicle based on ZigBee, the other is to construct the hardware-in-the-loop simulation platform of intelligent boom of pump vehicle, and to model the dynamic model of the controlled object. The remote control device of the arm of a concrete pump vehicle includes two parts: the transmitter and the receiver. The transmitter has multi-function integrated operation lever and key, the operator sends the operation instruction through the operation rocker and key. A LCD screen is installed at the transmitter to display the actual angle information of the boom. After receiving the instructions, the receiver converts them into CAN signals and sends them to the CAN bus, which can be received by the PLC controller in the hardware-in-the-loop simulation platform. This design has changed the traditional operation mode in which the operator directly controls each section of the arm, but uses the multi-function integrated operating handle to give the boom lift, expansion and rotation angle corresponding to the movement track of the pouring point. The motion of boom and turntable is planned and actuated by PLC controller according to open loop control and closed loop detection control strategy. In order to better study the intelligent control of the arm of concrete pump vehicle, the hardware-in-the-loop simulation platform of concrete pump vehicle is established. The platform is composed of PLC vehicle controller, industrial computer simulation boom system and upper computer arm display simulation. First of all, the dynamic model of concrete pump car is established, which runs on the industrial control computer, and simulates the actual pump truck boom system with the industrial control computer. Furthermore, the PLC controller receives the instructions of the remote control device and the angle information of the arm, according to the inverse kinematics operation, plans the motion trajectory of the arm, uses the open-loop control closed-loop detection algorithm to control the arm motion, and outputs the PWM driving signal. The data acquisition board card is used to collect the driving signal from the actual PLC controller. The actual change of the jib angle is calculated by using the established arm model. Finally, the information of each corner is output through the CAN port of the industrial control computer, so that the PLC controller can receive the information and the simulation of the upper computer can be displayed. After the remote control device and the hardware-in-the-loop simulation platform are designed, the transmitter and receiver of the remote control device are debugged. The debugging results show that the hardware of the transmitter works normally, the rocker can be scanned normally, the key information is sent and instructions are sent, the LCD screen can accurately display the angle of the arm, and the communication between the receiver and the transmitter is normal. The PLC controller and the display part of the host computer in the hardware-in-the-loop simulation platform are combined and adjusted to realize the remote control transmitter 60ms periodically sending instructions to the receiving end. After receiving the data at the receiving end, the CAN signal is packaged and sent to the CAN bus. The PLC receives the actual angle information of the remote control instruction and the arm, and the open-loop control closed-loop detection algorithm works well.
【學(xué)位授予單位】:東南大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2015
【分類號】:TU646
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