Hardware Design And Software Development Of Scissor Aerial Working Platform Controller

In the era of rapid economic growth,the population is increasing year by year,and the construction industry has also been developed rapidly,but these changes make the land resources more and more tense.In building construction,people have to increase the floor height to cope with this dilemma,so the demand for high-altitude operation is also increasing.Aerial work platform arises at the historic moment.It can send people or goods to work at height.It is composed of three parts: electric control system,hydraulic system and mechanical structure.And the electronic control system plays the most important role in it.In recent years,people have put forward more expectations for the function expansion and daily performance of aerial work platform,but the function of electronic control system used in the market has not been updated,so in order to meet the growing demand,it is necessary to develop a set of controllers which can be updated iteratively and runs stably.This paper takes the self-propelled scissors aerial work platform as the application object of the controller.Firstly,it describes its working principle,and then analyzes its control system,mechanical structure,hydraulic composition and use requirements in detail.Then,an iterative and updated complete electric control system is designed.In this paper,MPC5604 P and MPC5634 M are selected as MCU of platform controller and chassis controller to ensure stability.The main contents of this paper are as follows:(1)Through understanding the application function demand of the scissor type aerial work platform,the paper analyzes the current situation of the industry.The whole electromechanical hydraulic system is decomposed by modularization and the rising process is analyzed by using the scene.(2)Based on the functional requirements,the hardware design of the controller is completed,including the selection of the main control chip and the circuit design of the power supply module,signal acquisition module,communication module and solenoid valve drive module,as well as the manual wiring to complete the printing of the circuit board.(3)According to the designed hardware module,the corresponding driver is written,and the underlying driver is called to complete the overweight alarm application function.In order to debug the real vehicle motion performance on PC,a host computer based on CCP protocol communication is developed to debug and download the related motion parameters online.(4)By building an experimental platform to simulate the working conditions,the hardware and software functions are verified,a complete test system is established to observe the output performance of the controller,and the estimation accuracy of overweight alarm function is calculated by using offline data.At the same time,the calibration function of the host computer is verified by changing the output curve of specific working conditions.The controller is also installed on the real vehicle of the corresponding model for experiments.The experimental results show that the functions and performance meet the expected requirements.