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Digital Control Module


For Digital Control Systems
Power factor correction circuit
The following shows a power factor correction circuit with the digital control. The zero-order hold simulates the sampling effect, and the digital PI controller is implemented by a proportional gain block and a discrete integrator. - Enlarged View

Input voltage and current waveforms
Input voltage and current waveforms -
Enlarged View
The Digital Control Module is an add-on module to the PSIM software. It is provided to analyze control systems in z-domain. It can be used to simulate the performance of digital control loops, study digital filters, and evaluate various effects in digital control, such as truncation errors, sampling/hold delay, and computational delay.

This module is ideally suited to:
  • Simulate digital control schemes for microprocessors
    or DSP implementation,
  • To perform digital signal processing.

You can, for example, study the effect of A/D quantization errors, and determine whether a particular sampling rate will be able to achieve required performance specifications.

The Digital Control Module contains the following elements:
  • Zero-order hold
  • Unit delay
  • Z-domain transfer function block
  • General digital filters
  • FIR digital filters
  • Discrete integrator
  • Resetable discrete integrator
  • Discrete differentiator
  • Quantization block
  • Circular buffer
  • Convolution block
  • Memory read block
  • Vector array
  • Stack element

Key Features:
  • Easy to use
  • Quick and convenient construction of any control circuits
  • Common-used control elements


Digital Control Library (partial preview) - Enlarged View

Digital Control Library