Feedback Devices
Feedback devices are a class of device required for closed loop operation. They provide a signal back to the drive or motion controller to monitor an operation or process and verify that proper operation occurs. In Motion Control applications, there are two primary feedback devices: Resolvers and Encoders.
解析器是一种电磁反馈设备，可将角轴位置转换为模拟信号。这些信号可以通过各种方式处理，例如使用RDC（溶要到数字转换器）来生成数字位置信息。有两种基本类型的解析器。发射器和接收器。发射机类型设计用于转子初级激发和定子辅助输出。
Position is determined by the ratio of the sine output amplitude to cosine output amplitude. A receiver-type is designed for stator primary excitations and rotor secondary output. Position is determined by the phase shift between the rotor output signal and one of the primary excitation signals.
最流行的反馈设备是编码器。编码器是一种机电设备，用于将线性或旋转位移转换为相应的数字信号或模拟输出电压。
增量与绝对编码器：
Incremental Encoders
A device that generates electrical signals by means of a rotating disk that passes between a light source and photo detectors.
Incremental encoders have two output signals, or channels, commonly referred to as channel A and B. The A and B outputs are nominally 90º out of phase with each other and are interpreted by a motion controller to determine position/velocity information. The lead/lag relationship between the A and B channels provides directional information.
重要的是要了解每个机械位置并不是唯一的定义。当增量编码器启动时，尚不清楚增量编码器的位置，因为输出信号不是任何单数位置所唯一的。增量编码器通常会提供第三个输出，该输出每次旋转磁盘一次。这通常称为索引或z通道，通常用于归巢/参考移动。
绝对编码
对于每个机械位置，绝对编码器具有独特的值（电压，二进制计数等）。
When an absolute encoder is powered on, the position is known. Absolute encoders most commonly provide digital data in a parallel or serial format to the motion controller which is used to determine position/velocity information.
Since they provide absolute position information when powered on they eliminate the need for a homing/reference move in a motion system.
Electromate supplies feedback devices for optical & miniature encoders throughout Canada in regions like Ontario, British Columbia, and Quebec.
我们提供的编码器，斜率和转速计：
Optical Sensors
Includes距离传感器对于所有操作范围，颜色/对比度传感器for sorting and detecting, and the standardphotoelectric sensorsof differing sizes, ranges and switching variants.
Inductive Sensors
Inductive sensors are extremely precise due to their high repeatability levels. Their simple design and uncomplicated commissioning ensure minimal downtimes.
倾斜传感器
Electromate proudly carries TILTIX Inclinometers made by Posital. Also called tilt sensors, they're designed to measure the angle of an object with respect to the force of gravity. These tilt or level meters determine pitch and/or roll angle and output these values via the appropriate electrical interface. Inclinometers are easy to integrate to an application, because there's no need for mechanical linkages aside from the installation itself.
超声传感器
A useful alternative where optical sensors come up against their physical limits. This applies, for example, for objects with uneven surfaces or under difficult ambient conditions, or with highly transparent media as well as moving, highly reflective liquid surfaces.
Vision Sensors
A high-performance smart camera fitted in a compact and light-weight housing forms. The hardware is optimally enhanced by the VISOR® software, which enables the set-up of applications in a few simple steps and the adjustment of process parameters. Thanks to the software, the process can also be continuously monitored.
Draw Wire Encoders
They measure linear motion by displacing a stainless-steel wire wound around a wire drum. The drum actuates the rotary encoder coupled to it via a coupling. The wire in the housing is retracted by a spring. A proportional output is provided by the encoder. Measurements are accurate and reliable.
Linear Encoders
线性编码器和数字化线性位置的感觉change for position measurement and feedback to control systems. Linear encoders are available in two types, absolute and incremental, as defined by their position signals.
Rotary Encoders
将轴角或运动转换为模拟或数字输出信号的机电设备。旋转编码器通常属于三种主要的安装样式之一：空心轴，枢纽轴和轴。
High Vacuum Encoders
Incremental encoders with small vacuum-rated sensors for motion control applications operated in a vacuum. Specified in a wide range of applications due to their combination of performance, small size, and high vacuum rating.
Linear Displacement Transducers
线性位移换能器是线性传感器，可在磁性原理上起作用，从而通过两个磁场的瞬时相互作用在特殊设计的磁刻曲波导中诱导扭转应变脉冲。这两个磁场之间的相互作用会产生一个应变脉冲，该应变脉冲沿传感器波导以声速传播，直到在嵌入电子设备的传感器头部检测到脉冲。
DC Tachometers
提供一种将旋转速度转换为隔离的模拟电压信号的方便手段，适用于远程监视和速度控制应用。速度计特别适合精确集成器和速度伺服应用，这两者都需要高度线性速度/电压关系，并具有最小的连锁。
