静液驱动二次调节技术是一项新型的液压传动技术。它具有控制方便、容易组成类似于电气系统的网络执行机构以及液压能回收与重新利用，甚至比电气系统更为简便等一系列突出的优点。二次调节技术的研究将极大地提高液压传动技术的应用范围和产品的竞争力。扭矩伺服加载系统是二次调节技术研究的一个典型装置，同时它也具有很好的应用背景。文章通过对二次调节加载装置全系统建模，分析了二次调节技术的一些内在动态特性，建立了二次调节扭矩加载计算机控制系统，用部分实验曲线验证了理论分析的正确性。

Secondary regulation is novel hydraulic transmission technology which possesses many outstanding advantages, such as convenient controlling, easily composing network components just like that in an electric system, and even simpler energy recovering and regeneration than in an electric system. Researches in secondary regulation technology will have no hesitation to enlarge the application scope and enhance the product competitive power of the hydaulic system. Torque servo loading system is a typical equipment in secondary regulation research with; briniant application future. In the paper, by modeling a secondary regulated torque loading system in detail, some nature dynamic characteristics of secondary regulation technology is analyzed. Finally, a computer control system of the secondary regulated loading equipment is established and several experimental curves prove the theoretical analyzing results.