ass日本风韵熟妇pics男人扒开女人屁屁桶到爽|扒开胸露出奶头亲吻视频|邻居少妇的诱惑|人人妻在线播放|日日摸夜夜摸狠狠摸婷婷|制服 丝袜 人妻|激情熟妇中文字幕|看黄色欧美特一级|日本av人妻系列|高潮对白av,丰满岳妇乱熟妇之荡,日本丰满熟妇乱又伦,日韩欧美一区二区三区在线

Traditional hydraulic or pure electric driven tracked agricultural machinery equipment has problems such as highpower consumption, response lag, short battery life, and insufficient power and torque output. A type of high-efficiency electro-hydraulic track chassis was proposed, which integrated two independent power systems of hydraulic drive and electric drive, four-wheel drive structure with two hydraulic motors and two servo motors. It can realize the use of small power engine to output large torque, which was conducive to the lightweight design. At the same time, the speed and torque closed-loop control of the servo motor can adapt to the changes of the external load of the matching chassis, which can significantly improve the dynamic output characteristics of the closed hydraulic drive system, improve the dynamic control performance of the whole machine and reduce the energy consumption. A co-simulation model of the electro-hydraulic system was established based on AMESim and Matlab. The simulation compared and analyzed the driving performance of the whole machine under different working conditions, such as straight driving on flat ground, mountain climbing and in-situ steering. The prototype test results showed that the maximum speed of the electro-hydraulic drive track chassis was 1.1m/s, the fastest turning time was 2.4s, and the minimum turning diameter was 150cm, which can realize turning and turning around on the complex terrain of hills and mountains. The offset of track chassis in a straight line was less than or equal to 3.3%. Compared with the hydraulic drive under the same working conditions, the electro-hydraulic mode can reduce the energy consumption of at least 9.3%, effectively reduce the energy consumption and improve the working efficiency of the whole machine.