public Engine(RobotHand rh, int portNo, double speed, int idlePulse, int minPulse, int maxPulse) 
	{
		this.rh = rh;
		this.portNo = portNo;
		this.pulse = idlePulse;
		this.speed = speed;
		this.idlePulse = idlePulse;
		this.minPulse = minPulse;
		this.maxPulse = maxPulse;
	}