Abstract: To manually and optionally change length of a multi-joint structure, the multi-joint structure of the present invention is constituted so that variation detection sensor such as potentiometers is provided on connecting parts between each of joints, one or a plurality of the sensors are assumed to be a unit of the group, the signals of the sensors are captured by signal processing parts in each unit of the group, the parts between the signal processing parts are connected to the communication network and the signal processing part connected to the communication network computes and processes in accordance with signal data of the sensors, and it is constituted to output moving quantity and vector when the joints move to translate and rotate by detecting variation of the connecting parts between the joints at real time when shape of the multi-joint structure is deformed.

Abstract: Then an end effecter is used to operate a heavy object, a large bending moment may act on arms of a manipulator to bend them. Consequently, an operating section cannot precisely control positions. Thus, according to the present invention, three arms 14 are attached to a base section 11, each of the arms 14 being composed of a first link section 15 having one end connected to a rotating shaft 12 on the base section 11 and a second link section 17 connected to the first link section 15 via another rotating shaft 16. These arms 14 support an operating section 19. The second link section 17 is connected to the rotating shaft 16 and to the operating section 19 using universal joints 18a and 18b. Direct acting driving means 13 is composed of a driving shaft 13a and a driving source that advances and retreats the driving shaft 13a. The driving shaft 13a is driven to advance and retreat to move the operating section 19 to a desired position.

Abstract: Then an end effecter is used to operate a heavy object, a large bending moment may act on arms of a manipulator to bend them. Consequently, an operating section cannot precisely control positions. Thus, according to the present invention, three arms 14 are attached to a base section 11, each of the arms 14 being composed of a first link section 15 having one end connected to a rotating shaft 12 on the base section 11 and a second link section 17 connected to the first link section 15 via another rotating shaft 16. These arms 14 support an operating section 19. The second link section 17 is connected to the rotating shaft 16 and to the operating section 19 using universal joints 18a and 18b. Direct acting driving means 13 is composed of a driving shaft 13a and a driving source that advances and retreats the driving shaft 13a. The driving shaft 13a is driven to advance and retreat to move the operating section 19 to a desired position.

Abstract: A controller for a multidegree of freedom nonlinear mechanical system is for applying an adaptive model following control to a nonlinear mechanical system with time-varying parameters which have multidegrees of freedom and a driving source for each of the degree of freedom, and is described by a differential equation of q-th degree.