Control Systems

FPGA Control System

Deterministic, hardware-implemented field-oriented control for precision electromechanical systems. Sampling, control computation, and output timing follow a fixed hardware data path rather than an interrupt-driven software loop.

FPGA Control System
Purchasing

Interested in purchasing?

If you are interested in purchasing this control system, or would like to discuss a configuration for a specific actuator or application, contact us to discuss your requirements.

Contact Us
Control Architecture

Control implemented as hardware

The control fabric implements field-oriented control directly in FPGA logic. The system closes the FOC loop at 80 kHz and expresses the control path as a continuous dataflow structure rather than a sequence of interrupt-driven software tasks.

Encoder processing, coordinate transforms, current regulation, position regulation, feedforward, and PWM generation occupy defined stages in the control path. The hardware architecture therefore establishes the timing of each control operation directly.

Signal Path

A fixed control path from measurement to actuation

The control fabric connects measurement, computation, and actuation through a defined sequence of hardware stages.

Measurement

The control fabric receives encoder position and phase-current measurements at defined sampling points. The encoder front end supplies quadrature sine and cosine signals, while current measurements feed the FOC regulators.

Control Computation

FPGA logic performs fixed-point position and current regulation, Clarke and Park transforms, feedforward operations, and lookup operations within the control datapath.

Actuation

The control datapath sends voltage commands through inverse Park transformation, dead-time compensation, PWM generation, and the power bridge that drives the motor phases.

Timing

Deterministic timing

The FPGA architecture defines the timing of measurement, computation, and control output through a clocked hardware pipeline. The system aligns sampling with the motor's commutation cycle and places subsequent computation and output operations at deterministic points within the same control cycle.

Commutation-synchronized sampling The control system positions A/D sampling relative to the commutation cycle instead of scheduling sampling through an interrupt.
Hardware-defined latency FPGA pipeline stages establish the measurement-to- control path without software scheduling.
Cycle-to-cycle alignment Each control stage executes at a defined clocked position on every control cycle.
Specifications

Control system specifications

The specifications below describe the control architecture and its operating characteristics.

Control architecture Full-stack FOC hardware
Control implementation FPGA hardware
Control loop 80 kHz
Timing architecture Deterministic
Sampling Commutation-synchronized
Control computation Fixed-point FPGA datapath
Measurement-to-control latency ~20 ns
Clocked timing alignment ~1 ns
Configuration

A control fabric configured around the actuator

The control system forms one component of a larger precision automation architecture. Control logic, measurement, power electronics, actuator geometry, and calibration data work together when an application requires a configuration beyond the standard product.

If you have a specific control-system application or configuration in mind, contact us to discuss the requirements.