Soft power of GTZZ18D high altitude operation platform        

GTZZ18D crank arm type aerial work platform for electric crank arm type is the most popular model, as the crank arm type high-altitude platform, drive or electric drive, meets these two requirements is a breakthrough, how to make a control such a complex mechanical system, to transport heavy do, naturally, the GTZZ18D has become a hot model. According to the structural characteristics and application requirements of GTZZ18D, the overall scheme of the control system is formulated independently. This type of CAN communication, electronic differential, motor drive and drive system stability is very good, 18 meters electric swing arm control system also has the following beautiful points:

(1) the success of the CAN communication application of the GTZZ18D aerial platform control system, an in-depth study on the application of CAN bus protocol, a set of simple and effective application layer protocol; on the other hand is investigated from the terminal resistors, capacitors and common mode choke, three aspects of CAN bus converter EMC problem. The interface circuit and related program of CAN are designed, and the communication network of control system based on CAN bus is established.

(2) completed the selection of the driving motor, and through the analysis and comparison, chose an optimal motor drive mode. By establishing the simulation model of motor, simulation and analysis of phase current, back EMF, speed and other parameters, for motor drive control is good.

(3) the electronic differential mode of front wheel steering and four wheel drive is established, and the electronic differential system is simulated under the condition that the speed is given and the steering angle changes continuously. The Matlab/Simulink is used to simulate the electronic differential system. Only when the steering angle is large, can the differential speed be used, which provides the guarantee for the stability and safety of steering.

(4) the transfer function control model of the DC motor drive system based on speed and current is established, and the dynamic performance of the drive system is improved. The stability of the control system is very good!

(5) complete the installation and debugging of each factory GTZZ18D, the control system can basically meet the application requirements. The control system of GTZZ18D aerial work platform is more advanced. The previously used control system of high-altitude platform not only has complex structure, but also involves many contents and requires high control performance.

(6) the GTZZ18D platform is powered by a battery pack. Therefore, it is very important to test the remaining capacity of the battery. The battery capacity management system is very important.

(7) GTZZ18D uses the front wheel steering, four wheel drive mode, in order to further enhance the flexibility of high-altitude platform movement, the idea also introduced the use of four wheel steering, four wheel drive mode of work.

(8) in the aspect of inclination and height detection, GTZZ18D carries out error correction, and the detection accuracy is accurate.