actConstructor();
//@pausable
do {
	//@previous initialValue = new ControlSignal( force => 0 )
	accept(ctl:ControlSignal);
	this.controlForce = ctl.force;
		
	//@edge
	p = this.mass.position;
	//@edge
	v = this.mass.velocity;
	
	this.outputPort.ReceptionPlantState( new PlantStateSignal(
			position        => p,
			velocity        => v
			) 
		);
	}while(true);