The

QFIRE Studio

was conceived to simulate the interaction between QFIRE platforms and real world signals/systems.

Time and numerical approximations are reproduced in the corresponding domains as:

• QFIRE domain: sampling, computation time and output assignments, take place at specific instants which are integer multiples of the CPU clock in the QFIRE platform. Computation of intermediate values incorporate range limitations and/or quantization as supported by the core architecture in the specific QFIRE platform.
• External world domain: Any computation executed in an integer subdivision of the fastest period present in QFIRE tasks. No duration is considered for computation. Intermediate values are computed in double precision.

The diagram below summarizes the generic scenario simulated in

QFIRE Studio

:

The QFIRE (digital controller) is commanded by a real-time clock and interfaces with continuous domain by means of quantized holding circuits. It is modeled by default in Figure 2.

Under this generic diagram, the following three steps take place in a cycle:

1. Continuous signals interaction: External world domain exchange information with QFIRE holding interfaces

   

   Figure 3 - Interaction between external world and QFIRE

2. Sampling continuous signals: Continuous time signals get sampled at the task period.

   

   Figure 4 - Sampling continuous signals in QFIRE

3. Computing sampled signals: Discrete-time signals are used for computation by control program to produce output discrete-time signals and repeat the three steps again.

   

   Figure 5 - Computing sample signals in QFIRE