Fixed-Point Blockset

Integrator Forward Resettable Limited

Perform discrete-time limited integration of a signal using the forward method, with external Boolean reset

Library

Calculus

Description

The Integrator Forward Resettable Limited block performs a discrete-time integration of a signal using the forward method. When the cumulative sum reaches one of the limits given by the Upper limit and Lower limit parameters, the sum saturates to that limit.

When the external reset signal R is false, the block multiplies the input by the weighted sample time and adds the result to the cumulative sum since time zero.

When the external reset signal R is true, the block outputs the Initial condition for previous output parameter.

The first term of the sum is the product of the weighted sample time and the value of the Initial condition for previous input parameter.

Remarks

The output of the Integrator Forward Resettable Limited block differs from the output of the Integrator Backward Resettable Limited block only by the first and last terms in the cumulative sum.

Parameters and Dialog Box

Gain value

Specify the weight by which the sample time is multiplied.

Initial condition for previous output

Set the initial condition for the previous output.

Upper limit

The upper limit for saturation of the cumulative sum.

Lower limit

The lower limit for saturation of the cumulative sum.

Output data type and scaling

The options are:

• Specify via dialog
• Inherit via internal rule
• Inherit via back propagation
  When Specify via dialog is selected, you can specify the Output data type and Output scaling parameters.

Round toward

Rounding mode for the fixed-point output.

Saturate to max or min when overflows occur

If selected, fixed-point overflows saturate.

Characteristics

Input Ports	Any data type supported by the blockset
Output Port	Same as the input
Direct Feedthrough	Yes
Scalar Expansion	Of inputs and gain

See Also

Integrator Backward, Integrator Backward Resettable, Integrator Backward Resettable Limited, Integrator Forward, Integrator Forward Resettable, Integrator Trapezoidal, Integrator Trapezoidal Resettable, Integrator Trapezoidal Resettable Limited

Integrator Forward Resettable

Integrator Trapezoidal