基于STC90C54AD的工程机械电气控制器设计研究

The Design Studies of Construction Machinery Electrical Controller Based on STC90C54AD

在分析装载机的动臂,铲斗,油门三个主要工作部件的运动特征的基础上,设计了一款具有一定通用性的工程机械电气控制器。该控制器在硬件上集成了3个操纵杆和7个传感器输入接口、1个油门电机接口、4个比例阀电磁铁接口、故障监测报警模块、参数显示模块和模拟PID控制器模块。在软件方面研究了比例阀的PWM驱动原理和51单片机上软件产生PWM信号的技术,设计了基于51单片机的PWM脉冲算法。该控制器能实现对装载机动臂,铲斗,油门的控制,能实现对动臂、铲斗油缸压力,油温,水温等状态的监测报警。

On the analysis of the movement characteristic of the loader boom, bucket, throttle, the loader electrical controller, the controller in hardware used three joystick and seven sensor input interface, one throttle motor interface, four proportional valve electromagnet interface, fault monitoring, alarm module, parameter display module, the analog PID controller module etc were designed. On the software side, the PWM drive principle of the proportional valve and the 51 single-chip microcomputer software were studied to produce PWM signal on technology, and the PWM pulse algorithm was designed based on 51 single chip microcomputer. The controller can achieve the loader boom, bucket, throttle control, and realize alarm monitoring on the state of the boom bucket cylinder pressure, oil temperature, water temperature, etc.