Low-Cost Wearable Control Valves with No Mechanical Sliding Parts in Valves

The wearable driving system is required the pneumatic soft actuators, valves, and a controller. The complex inner configuration of the valve requiring relatively high precision prevents to fabricate a low-cost driving system. The cost for valve occupies most of the total cost. In this chapter, two types of low-cost control valves with no mechanical sliding parts in valve are described. One is an on/off type valve using vibration motor, another is a servo valve using buckled tube. The operating principle and performance of both valves are also introduced.