I want to generate encoder output pulses from the angular velocity of a motor using simscape.

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滉中桐 2024-7-5

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https://ww2.mathworks.cn/matlabcentral/answers/2134676-i-want-to-generate-encoder-output-pulses-from-the-angular-velocity-of-a-motor-using-simscape

编辑： Sreeram 2024-9-2

I want to reproduce the A and B phase pulses of the encoder using the Incremental Shaft Encoder in simscape's Electrical. The angular velocity of the motor has an output signal in another model and I don't know how to connect it to this simscape encoder.And it is not clear how to get phase A and B signals as simulink signals.

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Answer 1

Sreeram 2024-9-2

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https://ww2.mathworks.cn/matlabcentral/answers/2134676-i-want-to-generate-encoder-output-pulses-from-the-angular-velocity-of-a-motor-using-simscape#answer_1508729

编辑：Sreeram 2024-9-2

Hi @滉中桐,

I see that you have connected an Ideal Rotational Motion Sensor block to the Incremental Shaft Encoder. Ideal Rotational Motion Sensor is a device that converts an across-variable measured between two mechanical rotational nodes (R, C) into a control signal proportional to angular velocity (W). It is a sensor and cannot be used as a rotation source for the Encoder. Instead, you can use an Ideal Angular Velocity Source. This block generates a velocity differential at its terminals (R, C) proportional to the physical input signal (S).

You can pass any Simulink signal, such as a sine wave, to the port S of the Ideal Angular Velocity block through a Simulink-PS Converter block.

Regarding the second part, the output signals A and B are voltage signals. They need to be converted to physical signals using a Voltage Sensor, and then the physical signal can be converted to Simulink signals using a PS-Simulink Converter block.

Here’s how you can make the connections:

Connect the Simulink signal to the Ideal Angular Velocity Source using a Simulink-PS Converter.
Connect the output of the Incremental Shaft Encoder to the positive terminal of the Voltage Sensor. Connect the REF signal to the negative terminal of the Voltage Sensor
Use a PS-Simulink Converter to convert the physical signals (V) from the Voltage Sensor to Simulink signals.
Visualize the signals using a Simulink Scope block.