Variable impedance actuators: A review <s> Continuously variable transmission <s> In this paper a novel concept of embedded robotic actuator is presented which has been named the very versatile energy efficient (V2E2) actuator. This actuator stores energy during any force profile which generates negative work on the load and it does therefore have unprecedented potentials for robotics applications. <s> BIB001 </s> Variable impedance actuators: A review <s> Continuously variable transmission <s> Preface Acknowledgments Chapter 1: Basics of Mechanisms Chapter 2: Motion Control Systems Chapter 3: Industrial Robots Chapter 4: Mobile Scientific, Military, and Research Robots Chapter 5: Linkages: Drives and Mechanisms Chapter 6: Gears, Devices, Drives, and Mechanisms Chapter 7: Cam, Geneva, and Ratchet Drives and Mechanisms Chapter 8: Clutches and Brakes Chapter 9: Latching, Fastening, and Clamping Devices and Mechanisms Chapter 10: Chain and Belt Devices and Mechanisms Chapter 11: Spring and Screw Devices and Mechanisms Chapter 12: Shaft Couplings and Connections Chapter 13: Motion-Specific Devices, Mechanisms, and Machines Chapter 14: Packaging, Conveying, Handling, and Safety Mechanisms and Machines Chapter 15: Torque, Speed, Tension, and Limit Control Systems Chapter 16: Instruments and Controls: Pneumatic, Hydraulic, Electric, and Electronic Chapter 17: Computer-Aided Design Concepts Chapter 18: Rapid Prototyping Chapter 19: New Directions in Mechanical Engineering Index <s> BIB002
A final approach in this class is continuously variable transmissions incorporating designs such as Variable-diameter pulleys (VDP) or Reeves drives, Toroidal or roller-based continuously variable transmission (CVT) and Magnetic CVTs BIB002 . Stramigioli et al. BIB001 proposed the use of infinitely variable transmissions (IVT), in which the gearing includes a zero ratio and also a negative ratio. This IVT is between the output link and the spring element (see Section 3.1.1). This actuator could be controlled differently without an engagement of the clutch, by controlling the rest position with the motor on the other side of the spring and the stiffness with the adjustment of the IVT. The crucial element of this design is the IVT. A prototype has been built but not yet reported in the literature.