Abstract: A linear driving apparatus is provided wherein the driving output of a linear driving apparatus is adapted to be properly varied in the constant speed condition and the high acceleration condition for a moving object. Thereby the closer controlling operation may be effected not only in the high acceleration condition, but also in the constant speed condition if there is a considerable difference on the driving output of the linear driving apparatus in the constant speed condition and the high speed condition.

Abstract: The invention concerns a phase locked loop speed control circuit for controlling the speeds of two or more objects. It includes pulse generators for generating reference pulses, first counters for counting each of these reference pulses, encoders for detecting relative travelling distances of the objects, second counters for counting encoder pulses from the encoders, first subtracters for subtracting the outputs of the second counters from those of the first counters, second subtractors for subtracting the encoder pulses from the reference pulses, corrector sections for correcting the differences output by the first and the second subtractors, and adjusting sections for adjusting the movements of the objects based on the corrected differences.

Abstract: A method of checking the functioning of a driving wheel slip control system installed in a vehicle. Driving wheels are placed on support rollers and rotatably supported thereby. The driving wheels are driven by the engine. False signals indicative of tentative rotational speeds of trailing wheels are supplied to an ECU which in turn outputs a control signal for controlling the engine. Predetermined monitoring signals including at least the control signal output from the ECU are taken out from the driving wheel slip control system. It is determined whether the predetermined monitoring signals show values falling within respective predetermined allowable ranges. Further, a steering handle of the vehicle may be turned at the same time of rotation of the driving wheels, the steering angle of which is detected by a steering angle sensor. Further, instead of using the false signals, the trailing wheels may be placed on second support rollers for rotatably supporting the trailing wheels thereby.

Abstract: A linear motor is capable of reducing cogging which may be present in the motor. Cogging is an obstruction in realizing constant speed control or high accuracy of position control. The reduction of cogging is accomplished for example by pole location or specific detailed shaping of pole iron plates.

Abstract: A suction gas heater control device for an engine comprising first detector for detecting when the engine is brought into complete firing, and for providing a signal in response thereto; a first timer coupled to the output of the first detector for continuously providing a first operating signal for a predetermined period of time after a first period of time, the first period of time starting with the beginning of the inputting of a signal from the first detector and ending with the stopping of the signal from the first detector; a second detector for detecting engine temperature and for providing a second operating signal when the engine temperature is lower than a predetermined level; and a judgement circuit means coupled to the first timer and the second detector for providing a signal for operating a suction gas heater, when the first operating signal is applied thereto and when the second operating signal which indicates that at least one of the temperature of the engine is lower than a predetermined lev

Abstract: A hollow space of limited volume is defined in the central aperture formed through a heat-conducting plate, held in contact with a planar temperature-responsive resistance element, to receive the bimetal and heater supporting shaft. By varying the diameter and/or the length of the space, the rates of heat transmission from the heater to the bimetal and the resistance element can be properly correlated with each other so that any premature current control or overheating is effectively prevented.

Abstract: An automatic actuator for a carburetor choke valve of the type having a case supporting a heat and electrically conductive shaft therein and attached to said shaft a temperature responsive choke valve operating means, a heater for actuating said choke valve operating means, and a heat sensing means for sensing heat from said heater and for controlling current to said heater.