Introduction.- Model of Exoskeleton Suit.- Sensitivity Amplification Control of Exoskeleton Suit.- Direct Force Control of Exoskeleton Suit.- Force Control of Exoskeleton Suit Based on Inner Position Loop.- Impedance Control of Exoskeleton Suit.- Impedance Control of Exoskeleton Suit with Uncertainties.- Exoskeleton Suit's Reference Trajectory Estimated Method Based on Neural Network.- Conclusions.