function [inputs] = initializeInputs(opts_param)
    %% Default values for opts
    opts = struct('setpoint', false, ...
                  'ground_motion', false, ...
                  'ty', false, ...
                  'ry', false, ...
                  'rz', false  ...
    );

    %% Populate opts with input parameters
    if exist('opts_param','var')
        for opt = fieldnames(opts_param)'
            opts.(opt{1}) = opts_param.(opt{1});
        end
    end

    %% Load Sampling Time and Simulation Time
    run init_sim_configuration.m

    %% Define the time vector
    time_vector = 0:Ts:Tsim;
    
    %% Create the input Structure that will contain all the inputs
    inputs = struct();

    %% Set point [m, rad]
    if opts.setpoint
        setpoint = zeros(length(time_vector), 6);
        setpoint(ceil(10/Ts):end, 2) = 1e-6; % Step of 1 micro-meter in y direction
    else
        setpoint = zeros(length(time_vector), 6);
    end

    inputs.setpoint = timeseries(setpoint, time_vector);

    %% Ground motion
    if opts.ground_motion
        load('./mat/weight_Wxg.mat', 'Wxg');
        ground_motion = 1/sqrt(2)*100*random('norm', 0, 1, length(time_vector), 3);
        ground_motion(:, 1) = lsim(Wxg, ground_motion(:, 1), time_vector);
        ground_motion(:, 2) = lsim(Wxg, ground_motion(:, 2), time_vector);
        ground_motion(:, 3) = lsim(Wxg, ground_motion(:, 3), time_vector);
    else
        ground_motion = zeros(length(time_vector), 3);
    end

    inputs.ground_motion = timeseries(ground_motion, time_vector);

    %% Translation stage [m]
    if opts.ty
        ty = zeros(length(time_vector), 1);
    else
        ty = zeros(length(time_vector), 1);
    end

    inputs.ty = timeseries(ty, time_vector);

    %% Tilt Stage [rad]
    if opts.ty
        ry = 3*(2*pi/360)*sin(2*pi*0.2*time_vector);
    else
        ry = zeros(length(time_vector), 1);
    end

    inputs.ry = timeseries(ry, time_vector);

    %% Spindle [rad]
    if opts.ty
        rz = 2*pi*0.5*time_vector;
    else
        rz = zeros(length(time_vector), 1);
    end

    inputs.rz = timeseries(rz, time_vector);

    %% Micro Hexapod
    u_hexa = zeros(length(time_vector), 6);

    inputs.micro_hexapod = timeseries(u_hexa, time_vector);

    %% Center of gravity compensation
    mass = zeros(length(time_vector), 2);

    inputs.axisc = timeseries(mass, time_vector);

    %% Nano Hexapod
    n_hexa = zeros(length(time_vector), 6);

    inputs.nano_hexapod = timeseries(n_hexa, time_vector);

    %% Save if no output argument
    if nargout == 0
        save('./mat/inputs.mat', 'inputs');
    end
end