Ideal Translational Motion Sensor

Motion sensor in mechanical translational systems


Mechanical Sensors


The Ideal Translational Motion Sensor block represents a device that converts an across variable measured between two mechanical translational nodes into a control signal proportional to velocity or position. You can specify the initial position (offset) as a block parameter.

The sensor is ideal since it does not account for inertia, friction, delays, energy consumption, and so on.

Connections R and C are mechanical translational conserving ports that connect the block to the nodes whose motion is being monitored. Connections V and P are physical signal output ports for velocity and position, respectively.

The block positive direction is from port R to port C. This means that the velocity is measured as v = vRvC, where vR,vC are the absolute velocities at ports R and C, respectively.

Dialog Box and Parameters

Initial position

Sensor initial position, or offset (m). The default value is 0.


The block has the following ports:


Mechanical translational conserving port associated with the sensor positive probe.


Mechanical translational conserving port associated with the sensor negative (reference) probe.


Physical signal output port for velocity.


Physical signal output port for position.

Introduced in R2007a

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