打开一切科学的钥匙都毫无异议地是问号，我们大部分的伟大发现都应当归功于如何？而生活的智慧大概就在于逢事都问个为什么？
The key to all science is undoubtedly a question mark. What should we owe most of our great discoveries? The wisdom of life is probably to ask why everything happens?
——巴尔扎克 Balzac
轴式扭矩传感器是真正的全能传感器，适用于从发动机试验台到生产测试等众多应用。本篇包括了轴式扭矩传感器常见问题及解答，例如轴式扭矩传感器安装和设置、功能、优势以及应用的局限性等。
The shaft type torque sensor is a true all-around sensor, which is suitable for many applications from engine test bench to production testing. This section includes frequently asked questions and answers about shaft torque sensor, such as installation and setting of shaft torque sensor, functions, advantages and application limitations.
轴式扭矩传感器如何工作？
大多数扭矩传感器都基于应变测量技术。基本设计结构为一个测量轴。当外部施加载荷时，测量轴产生对应载荷的变形，通过对变形量的测量即可获知扭矩的大小。因为扭矩加载时会使测量体产生一定程度的扭转变形。
Most torque sensors are based on strain measurement technology. The basic design structure is a measuring shaft. When the external load is applied, the measuring shaft will produce the deformation of the corresponding load, and the torque can be obtained by measuring the deformation. Because the torque loading will cause a certain degree of torsional deformation of the measuring body.
扭矩测量轴是如何构成的？
简而言之，扭矩传感器由三个主要部件或功能区域组成：
In short, the torque sensor consists of three main components or functional areas:
测量轴：也称为转子，连接到被测物体上，完成实际测量
Measuring shaft: also called rotor, which is connected to the measured object to complete the actual measurement
信号调理和供电电子部件
Signal conditioning and power supply electronic components
外壳：也称为定子，用于封装轴和电子设备。外壳可安装在试验台上。
Housing: Also called stator, it is used to package shaft and electronic equipment. The enclosure can be mounted on the test bench
轴式扭矩传感器如何安装？
比如可以使用底座或侧孔，将壳体将传感器连接到试验台上。在此过程中，必须确保精确对准，以便测量轴的轴端与被测部件的驱动轴和输出轴完全对中。测量轴也可悬挂安装。由驱动轴和输出轴支撑。此解决方案仅适用于较低的转速。
For example, the housing can be used to connect the sensor to the test bench using a base or side hole. During this process, it is necessary to ensure accurate alignment so that the shaft end of the measuring shaft is completely aligned with the drive shaft and output shaft of the component being tested. The measuring shaft can also be mounted in suspension. Supported by the drive shaft and output shaft. This solution is only available at lower speeds.
如何进行机械连接？
测量轴必须安装在或连接到试验台或系统的被测部件上。这可以通过锁定连接来实现，例如联锁系统、方形或键连接。另一方面，有各种各样的连接器件，如夹紧波纹管联轴器或缩套多盘联轴器。
The measuring shaft must be installed or connected to the tested part of the test bench or system. This can be achieved by locking connections, such as interlocking systems, square or key connections. On the other hand, there are various connecting devices, such as clamped bellows coupling or shrunken multi disk coupling.
如何显示和处理测量结果？
扭矩传感器通常不带显示器，通常通过下游电子系统记录和处理测量值，包括使用复杂的控制系统。根据应用情况，也可采用带有显示器的电子设备直接显示结果。输出信号因情况而异，通常是频率或电压信号。
Torque sensors usually do not have a display and usually record and process measured values through downstream electronic systems, including the use of complex control systems. Depending on the application, electronic equipment with display can also be used to directly display the results. The output signal varies from case to case, usually a frequency or voltage signal.
轴式扭矩传感器有哪些优势？
操作简单、通用是其主要优势。
ts main advantages are simple operation and versatility.
保护性设计，测量轴被壳体密封，特别适用于较小扭矩测量。
Protective design, the measuring shaft is sealed by the shell, especially suitable for small torque measurement.
就定价而言，轴式扭矩传感器通常比扭矩法兰更有吸引力。
In terms of pricing, shaft type torque sensors are generally more attractive than torque flanges.
轴式扭矩传感器的缺点是什么？
一个无法避免的、与设计有关的缺点是：使用轴式扭矩传感器时会产生的轴承摩擦。另外，所需的安装空间略长于扭矩法兰的安装空间。由于设计结构不同，测量法兰更适用于千牛米和兆牛米范围内的大扭矩。
An unavoidable disadvantage related to design is bearing friction when using shaft torque sensor. In addition, the required installation space is slightly longer than that of the torque flange. Due to different design structures, the measuring flange is more suitable for large torque in the range of kN and MNm.
如何选择正确的轴式扭矩传感器？
这个看似简单的问题需要一份全面的答案，以确保覆盖所有关键参数。首先需要考虑测量范围和最大预期转速，以及相应的测量精度。另外环境温度也不应忘记。为了进一步确定轴式扭矩传感器是否合适，我们建议查看技术数据表并参考安装说明，进一步确认。
This seemingly simple question requires a comprehensive answer to ensure that all key parameters are covered. First of all, it is necessary to consider the measurement range, the maximum expected speed, and the corresponding measurement accuracy. In addition, the ambient temperature should not be forgotten. To further determine whether the shaft torque sensor is suitable, we recommend checking the technical data sheet and referring to the installation instructions for further confirmation.
更换现有系统中的扭矩传感器，需考虑的因素
更换现有系统中的轴式扭矩传感器时，必须考虑几何尺寸，包括安装孔位置和轴直径。信号输出也必须兼容或易于适应。由于扭矩传感器通常具有非常相似的尺寸，并且电压和频率输出被广泛使用，通常只需要进行很少的调整。
When replacing the shaft type torque sensor in the existing system, the geometric dimensions must be considered, including the location of the mounting hole and the shaft diameter. The signal output must also be compatible or easily adaptable. Since torque sensors usually have very similar dimensions, and voltage and frequency outputs are widely used, little adjustment is usually required.
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