초록 ▼

A control arrangement for manually controlling speed and direction of devices such as electric motors typically where these drive the two driving wheels of a wheel chair, the control being achieved by having the radiant energy falling on several detectors, these being responsive to radiant energy fa

A control arrangement for manually controlling speed and direction of devices such as electric motors typically where these drive the two driving wheels of a wheel chair, the control being achieved by having the radiant energy falling on several detectors, these being responsive to radiant energy falling on them from an emitter and this being controlled by the position of a reflective surface which is coupled to a control arm, the outputs from each detector being compared electronically both to determine whether the motor or motors should drive in a forward or rearward direction and their speed.

대표청구항 ▼

A control arrangement for electric motors in which a mechanical controller is adapted to be manually used to control both forward and rearward speed of at least one electric motor, said control arrangement comprising: means to convert a manually determined position of a controller into an electrical

A control arrangement for electric motors in which a mechanical controller is adapted to be manually used to control both forward and rearward speed of at least one electric motor, said control arrangement comprising: means to convert a manually determined position of a controller into an electrically useful signal to control said at least one electric motor, said means including a shift member having various positions and controlled in position by the said controller; at least two detectors and a radiant energy emitter associated with each of said detectors, said detectors each being responsive with a proportional electrical output to the level of the radiant energy from the associated emitter reflected from a reflection surface of said shift member, the position of said shift member being detected by said detectors by providing a varying effect to which said detectors are sensitive and will provide a variable output therby, the electrical output signal from each said detector being varied by reason of the varied, relative positions of said shift member with respect to said detectors; and an electrical circuit for controlling the said at least one electric motor, and said electrical circuit including means to effect a drive signal for said at least one electric motor which is varied to control the speed thereof as a factor of the combination of outputs of said detectors to control both the direction of rotation of the controlled motor in both a forward and rearward direction and the speed thereof.