The choice of the encoder resolution calculation method
There are many kinds of, the resolution of the encoder from hundreds to thousands of, about the encoder resolution how to choose, we should to decide according to the actual demand, the following lists the encoder resolution methods, we can look at. , lap pulse number 1 choice for the required accuracy control as far as possible, so that we can reduce the scaling, measuring range, such as 12 m measurement shows only 1 m/step ( Low resolution) 12 PPR, can choose, if you need to show 0. 01 m/step ( High resolution) Should choose more than 1200 PPR or encoder. If you choose the 600 PPR encoder measurement shows zero. 01 m/step accuracy, it needs to be scale conversion, 0. 02 m/step conversion of 0. 01 m/step. 2, will be the choice of lap pulse number of PPR and motor drive maximum speed comprehensive consideration of incremental encoder, calculate the working frequency, ensure it will not cause under the maximum speed pulse output frequency than the encoder pulse output frequency and the input frequency of the controller. 3, attention may use controller with 2 or 4 times the frequency doubling function, according to the above examples, 0. 01 m/step measuring precision, choose 600 PPR and 2 times or 4 times 300 PPR frequency, can achieve the same effect. Incremental encoder has the characteristics of small volume, light weight, compact bodies, easy installation, simple maintenance, small drive moment, it has high precision, large measuring range, fast response and digital output characteristic, very suitable for measuring speed, measuring unlimited accumulation. But there's zero accumulated error, poor anti-interference, receiving equipment power outage to memory, boot should change or reference, if choose type absolute encoder can solve these problems. Shanghai electronic products specializing in the production of rotary encoder, 27 years old encoder manufacturers, electronic production of magnetoelectric encoder performance not easily affected by dust and condensation; Its simple and compact structure, non-contact, long life, high and low temperature resistance, resistance to vibration, fast response speed and low cost, can according to customer needs to define the resolution and accuracy, size completely according to customer needs to customize, looking for a rotary encoder manufacturers are looking for electronics.