Hall Effect Sensor Model VI

Owning Palette: Measurement VIs

Requires: Electric Motor Simulation Toolkit

Simulates a Hall effect sensor that detects the mechanical position of the motor rotor.

The Hall effect sensor represents one type of position sensor that many electric motor applications use. This VI simulates a typical application where three Hall effect sensors locates on the arc of a circle with the same central angle from each other.

Details  

	rotor position specifies the mechanical rotor position, in degrees, of the electric motor.
	Hall configuration specifies the angles that the three Hall effect sensors locate. angle A specifies the angle, in degrees, that the Hall effect sensor A locates. The default value is -60 degrees. angle B specifies the angle, in degrees, that the Hall effect sensor B locates. The default value is 60 degrees. angle C specifies the angle, in degrees, that the Hall effect sensor C locates. The default value is 180 degrees.
	error in describes error conditions that occur before this node runs. This input provides standard error in functionality.
	Hall A returns the state of Hall effect sensor A, where TRUE is active, and FALSE is inactive.
	Hall B returns the state of Hall effect sensor B, where TRUE is active, and FALSE is inactive.
	Hall C returns the state of Hall effect sensor C, where TRUE is active, and FALSE is inactive.
	error out contains error information. This output provides standard error out functionality.

Hall Effect Sensor Model Details

The following table shows the relationship between sensor states and rotor position. The Hall configuration uses the default settings where angle A is -60 degrees, angle B is 60 degrees, and angle C is 180 degrees.

Sensor	State	Rotor Position
Hall A	1	0° ≤ θ ≤ 120° or 300° ≤ θ ≤ 360°
Hall A	0	Others
Hall B	1	60° ≤ θ ≤ 240°
Hall B	0	Others
Hall C	1	180° ≤ θ ≤ 360°
Hall C	0	Others

The following figure illustrates the relationship between Hall effect sensor states and rotor position.