陀螺测油重技术是一种近几年发展起来的大容积油重计量技术,由于陀螺仪表和光、电、机,特别是计算机技术的有机结合,使陀螺测油重装置的研制进展较快。文献给出了这种装置的原理、特点和关键技术问题所在。确实,它摒弃了“体积×比重=重量”这一传统测重原理,较好地排除了温度变化对测量精确度的影响,同时又具有陀螺仪表的一系列优点,是目前较为理想的测油重装置。但值得注意的是,由于负载的不断变化,如果不对输出特性加以有效补偿,仪表亦不可能获得满意的输出特性。补偿措施是多种多样的,总的说不外乎两类:一是依靠计算机单纯地对仪表输出进行补偿;二是以仪表补偿为主,计算机补偿为辅的综合补偿。所谓“二次测量”就是属于后一类的一种补偿法。本文在分析仪表输出特性的基础上,就这种补偿法的原理、特点和实施方法作一讨论。 1.负载波动对输出的影响如图1所示,负载是通过杠杆减力加在陀螺机构上的,外力P在陀螺内环轴上形成力矩 The gyro oil measurement and weighing technology is a kind of large volume oil weight measurement technology developed in recent years. Due to the organic combination of gyro meter and light, electricity and machine, especially computer technology, the development of gyro oil measuring and weighing device is progressing rapidly. Literature gives the principle of this device, features and key technical issues. Indeed, it abandons the traditional principle of weighing such as “volume x specific weight = weight”, which better eliminates the influence of temperature variation on the measurement accuracy and has a series of advantages of gyroscope at the same time, which is currently ideal Oil measuring device. However, it is noteworthy that, due to the ever-changing load, the instrument can not obtain satisfactory output characteristics without effectively compensating for the output characteristics. Compensation measures are varied, generally speaking, there are no more than two categories: First, rely on the computer simply to meter output compensation; second meter-based compensation, supplemented by a comprehensive computer compensation compensation. The so-called “second measurement ” belongs to the latter category of compensation. Based on the analysis of the output characteristics of the instrument, this paper makes a discussion on the principle, characteristics and implementation of this compensation method. 1 load fluctuations on the output as shown in Figure 1, the load is reduced by the lever on the gyro mechanism, the external force P in the gyro inner ring axis torque