Warning: This library is likely incorrect. I was trying some random stuff with some broken hardware. Though the core abstraction is there but it's not properly tested.

Pidex

Pure Elixir library for PID controllers (proportional–integral–derivative controller). Usable as both a pure function or GenServer setup.

Usage

Function based usage:

    pid = %Pidex{kP: 1.2, kI: 1.0, kD: 0.001, max_point: 20.0}
    state = %Pidex.State{ts: 0.00}
    {output, state} = {pid, state, 5.0, 1} |> Pidex.update()

GenServer based usage:

    settings = %Pidex.Pidex{kP: 1.2, kI: 1.0, kD: 0.001,
                      min_point: -20.0, max_point: 20.0, ts_factor: 1_000.0}
    {:ok, pid} = Pidex.PdxServer.start_link(settings: settings,
                                            ts_unit: :millisecond)

    pid |> PdxServer.set_time(nil, :millisecond)

Installation

def deps do
  [
    {:pidex, "~> 0.1.0"}
  ]
end